3298100.Z - LITTELFUSE - Datasheet.Live

CIRCUIT

PROTECTION

SOLUTIONS FOR

AUTOMOTIVE

APPLICATIONS

Passenger Car Solutions

Our offering of automotive circuit protection solutions encompasses a wide range of applications:

Powertrain

Safety

Comfort

Infotainment

Fuse Box

Power Supply

Lighting

Engine Management

Transmission Control

Cooling Fan

Water Pump

ABS

EPAS

Air Bag

Chassis Control

Window Lift

Sun Roof

Door Lock

Power Seat

HVAC

Dashboard

Navigation

In-Car Entertainment

Wire Harness

Generator

HID Headlight

Headlight Leveling

Directional Lighting

portfolio of Littelfuse automotive

technologies, products & services

Passenger Automobiles Aftermarket

SERVICES

Product Technologies Plus Application Design Evaluation Services

Littelfuse is the world leader in circuit protection. We offer an

extensive selection of circuit protection technologies for Automotive

applications. Littelfuse circuit protection expert staff can assist you in

designing circuit protection for your most demanding

applications. Solutions for over-current applications as well as

over-voltage applications are available from Littelfuse.

1

3

5

7

CIRCUIT PROTECTION TECHNOLOGIES (1-8)

2

1. Fuses/Footprint Reduction

MICRO2™, MICRO3™ fuses

2. Medium Current Cartridge Fuses

MCASE+™ cartridge fuses; considerably smaller

than JCASE® and Low Proﬁle JCASE® fuses

3. Discrete High Current Fuses

High Current Bolt Down fuses and fuse arrays

4. ZCase Masterfuse

Smallest high current distribution product in the

industry

5. Masterfuse

High current distribution array

6. ZCase Single MEGA

Minimal Footprint Bolt Down fuse

7. High Voltage Fuses

Low-current fuses for Electric and Hybrid Electric

Vehicles

8. Battery Cable Protection

CABLE PRO® protectors for mounting directly

inline as part of a high power cable assembly

4

6

8

littelfuse.com

Blade Fuses 1

Cartridge Fuses 10

High Current Fuses 16

Cable & PAL Fuses 38

High Voltage Fuses 42

Specialty Products 47

Fuseology 51

Table of Contents

Littelfuse and the Environment

As members of the global community, we at Littelfuse

have always strived to understand the impact of what

we do, and of what we create, on the world around us.

Because of this, our concern for the environment has

always been an integral and fundamental part of our

business. We continually work to balance our business

objectives with the need to protect and improve the local

and global environment.

Our Strategy for the Design of

Eco-friendly Products

Littelfuse has established a focused program committed to

developing high-performance eco-friendly products along

with a comprehensive set of processing/reliability data and

technical process expertise. This includes processes for

eliminating, detecting and documenting the presence of

hazardous materials such as

• Lead

• Cadmium

• Hexavalent Chromium

• Mercury

• Brominated flame-retardants

(PBBs and PBDEs)

The Littelfuse strategy for eco-friendly products is

specifically designed to help support our worldwide

customers in their transition to Lead-Free processing.

All products considered to be lead-free are marked with

this symbol.

Littelfuse defines lead-free as products which contain less

than 1000ppm (0.1%) Lead, measured by weight of the

entire product.

All RoHS compliant products are marked with this symbol.

Littelfuse follows the requirement set by the European

Union for all RoHS compliant products. The European Union

Directive 2002/95/EC RoHS restricts the use of Lead,

Mercury, Hexavalent Chromium, Cadmium and Brominated

flame-retardants (PBBs and PBDEs)

Visit www.littelfuse.com/lead-free

for further information.

Helping to make the World a Cleaner Place to Live

littelfuse.com

1 littelfuse.com

MICRO2™ Blade Fuse 32V 2

MICRO3™ Blade Fuse 32V 3

Low Profile MINI® Fuses Rated 58V 4

MINI® Blade Fuse Rated 32V 5

MINI® Blade Fuse Rated 58V 6

ATOF® Blade Fuse Rated 32V 7

MAXI® Blade Fuse Rated 32V 8

MAXI® Blade Fuse Rated 58V 9

Blade Fuses

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 2

MICRO2™ Blade Fuses Rated 32V

The MICRO2™ Fuse is the new standard for vehicle circuit protection. Its sub-miniature

design meets the need for more circuits to be protected while utilizing less space and its

ability to cope with high temperatures in adverse environments makes the MICRO2™ Fuse of

recommended choice for protection.

Black amperage stamps are used on the 20A & 25A / light colored housings to improve

contrast for vision system inspection.

Blade Fuses

Speciﬁcations MICRO2 MICRO2 Sn

(Silver Plated) (Tin Plated)

Voltage Rating: 32 VDC 32 VDC

Interrupting Ratings: 1000A @ 32 VDC 1000A @ 32 VDC

*Component Level Temperature Range: -40˚C to +125˚C -40˚C to +105˚C

**System Level Temperature Range: -40˚C to +105˚C -40˚C to +85˚C

105°C and 85°C are typical system level temperature requirements.

Terminals: Ag plated zinc alloy Sn plated zinc alloy

Housing Material: PA66 PA66

Conforms to: SAE 2741 and ISO 8820-4 in reference to electrical, mechanical

and environmental performance requirements

MICRO2TM Sn

(Tin plated) Blade Fuses

MICRO2TM Blade Fuses

Dimensions

Dimensions in mm

Temperature Rerating Curve Time-Current Characteristic Curves

Ordering Information

Part Number Package Size

0327xxx.YX2S 4000

0327xxx.UXS 500

0327xxx.LXS 50

MICRO2 Sn Fuse

0327xxx.YX2T 4000

Time-Current Characteristics

% of Rating Opening Time Min / Max

110 100 h / –

135 0.75 sec / 120 sec

160 0.30 sec / 50 sec

200 0.15 sec / 5 sec

350 0.04 sec / 0.50 sec

600 0.02 sec / 0.100 sec

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

0327005._ 5 116 17.4 17

032707.5_ 7.5 106 10.8 47

0327010._ 10 102 7.7 89

0327015._ 15 94 4.9 189

0327020._ 20 91 3.5 397

0327025._ 25 90 2.6 585

0327030._ 30 88 2.1 1028

0.01

0.10

1.00

10.00

100.00

1 10 100 1000

Time (s)

Current (A)

MICRO2 Fuse Preliminary Time-Current Characteristics

July 2008

5

7.5

10

15

20

25

30

*Component Level Temperature =

the maximum ambient temperature

that a single fuse will survive. This

does not factor-in the heat from a

populated fuse box, but does include

the heat from the current load with

the proper rerating. **System Level

Temperature represents the ambient

temperature of the fuse box at a

location within the vehicle. The

temperature within a populated fuse

box (in a given location) will be

higher. The limiting factor is the

plating. Sn-plating’s temperature

limit is ≈130°C, and Ag-plating

allows up to 150°C at the terminal

interface.

littelfuse.com

3

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

MICRO3™ Blade Fuses Rated 32V

The MICRO3™ Fuse has 3 terminals and 2 fuse elements with a common center terminal.

Its sub-miniature design meets the need for more circuits to be protected while utilizing less

space and its ability to cope with high temperatures in adverse environments makes the

MICRO3™ Fuse of recommended choice for protection.

Speciﬁcations

Voltage Rating: 32 VDC

Interrupting Ratings: 1000A @ 32 VDC

*Component Level Temperature Range: -40˚C to +125˚C

**System Level Temperature Range: -40˚C to +105˚C

105°C is a typical system level temperature requirement.

Terminals: Ag plated zinc alloy

Housing Material: PA66

Conforms to: SAE 2741 and ISO 8820-4 in reference to electrical, mechanical

and environmental performance requirements

Time-Current Characteristics

% of Rating Opening Time (Min / Max)

110 100 h / –

135 0.75 sec / 120 sec

160 0.30 sec / 50 sec

200 0.15 sec / 5 sec

350 0.04 sec / 0.50 sec

600 0.02 sec / 0.100 sec

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

0337005._ 5 116 17.4 17

033707.5_ 7.5 106 10.8 47

0337010._ 10 102 7.8 89

0337015._ 15 94 4.9 189

Ordering Information

Part Number Package Size

0337xxx.PX2S 2000

0337xxx.LXS 50

Time-Current Characteristic Curves

Blade Fuses

Dimensions

Dimensions in mm

Temperature Rerating Curve

*Component Level Temperature = the maximum ambient temperature that a

single fuse will survive. This does not factor-in the heat from a populated fuse

box, but does include the heat from the current load with the proper rerating.

**System Level Temperature represents the ambient temperature of the fuse

box at a location within the vehicle. The temperature within a populated fuse

box (in a given location) will be higher. The limiting factor is the plating.

Sn-plating’s temperature limit is ≈130°C, and Ag-plating allows up to 150°C at

the terminal interface.

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 4

Low Proﬁle MINI® Blade Fuses Rated 58V

The Low Profile MINI® fuse has similar performance characteristics as the standard MINI®

fuse. The lower overall height allows for more space and weight savings. The Low Profile

MINI® fuse is designed to mate with tuning-fork terminals, which provides additional weight

and material savings in fuse box designs by eliminating the need for female box terminals.

Speciﬁcations

Voltage Rating: 58 VDC

Interrupting Rating: 1000A @ 58 VDC

*Component Level Temperature Range: -40˚C to +125˚C

**System Level Temperature Range: -40˚C to +105˚C

105°C is a typical system level temperature requirement.

Terminals: Ag plated zinc

Housing Material: PA66

Complies with: ISO 8820-9

Low Proﬁle MINI® 10.9mm

Blade Fuses

Low Proﬁle MINI®

Blade Fuses

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

110 360,000 s / –

135 0.750 s / 120 s

200 0.150 s / 5 s

350 0.080 s / 0.250 s

600 0.030 s / 0.100 s

Ordering Information

Part Number Package Size Plating

0891xxx.NXS 5000 Ag

0891xxx.U 500 Ag

0891xxx.H 100 Ag

Low Profile MINI® 10.9mm Fuse

0891xxx.NXWS 5000 Ag

Dimensions

Dimensions in mm

Time-Current Characteristic

Curves

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Cold Resistance

(mΩ)

I2t

(A2s)

0891002._†2 54.2 3

0891005._ 5 17.21 22

089107.5_ 7.5 10.65 53

0891010._ 10 7.59 102

0891015._ 15 4.70 198

0891020._ 20 3.35 420

0891025._ 25 2.56 613

0891030._ 30 2.06 1110

Low Proﬁle MINI® 10.9mm

Blade Fuses

Temperature Rerating Curve

Low Proﬁle MINI®

10.9mm

*Component Level Temperature = the maximum ambient temperature that a single fuse will

survive. This does not factor-in the heat from a populated fuse box, but does include the

heat from the current load with the proper rerating. **System Level Temperature represents

the ambient temperature of the fuse box at a location within the vehicle. The temperature

within a populated fuse box (in a given location) will be higher. The limiting factor is the

plating. Sn-plating’s temperature limit is ≈130°C, and Ag-plating allows up to 150°C at the

terminal interface.

†

† Only offered for the 10.0mm series.

littelfuse.com

5

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

MINI® Blade Fuses Rated 32V

The MINI® Fuse is the standard for vehicle circuit protection. Its miniature design meets the

need for more circuits to be protected while utilizing less space, and its ability to cope with

high temperatures in adverse environments makes the MINI® Fuse of recommended choice

for protection.

Speciﬁcation MINI MINI Sn

(Silver Plated) (Tin Plated)

Interrupting Rating: 1000A @ 32 VDC 1000A @ 32 VDC

Voltage Rating: 32 VDC 32 VDC

*Component Level Temperature Range: -40˚C to +125˚C -40˚C to +105˚C

**System Level Temperature Range: -40˚C to +105˚C -40˚C to +85˚C

105°C and 85°C are typical system level temperature requirements.

Terminals: Ag plated zinc alloy Sn plated zinc alloy

Housing Material: PA66 PA66

Complies with: SAE J2077, ISO 8820-3, SAE J2077, ISO 8820-3

UL 248 Special Purpose Fuses not UL recognized

MINI® Sn (Tin plated)

Blade Fuses

MINI® Blade Fuses

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

110 360,000 s / –

135 0.75 s / 600 s

200 0.15 s / 5 s

350 0.080 s / 0.500 s

600 0.030 s / 0.100 s

Ordering Information

Part Number Package Size

0297xxx.WXNV 3000

0297xxx.U 500

0297xxx.H 100

0297xxx.L 50

MINI® Sn Fuse

0297xxx.WXT 3000

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A²s)

0297002._ 2 171 55.60 2.8

0297003._ 3 153 33.75 9.4

0297004._ 4 121 23.48 17

0297005._ 5 129 17.75 25

029707.5_ 7.5 135 10.85 68

0297010._ 10 108 7.42 93

0297015._ 15 98 4.58 270

0297020._ 20 96 3.21 380

0297025._ 25 86 2.36 625

0297030._ 30 87 1.85 1130

0.825

Dimensions

Dimensions in mm

Temperature Rerating Curve

Time-Current

Characteristic Curves

Blade Fuses

*Component Level Temperature = the maximum ambient temperature that a

single fuse will survive. This does not factor-in the heat from a populated

fuse box, but does include the heat from the current load with the proper

rerating. **System Level Temperature represents the ambient temperature of

the fuse box at a location within the vehicle. The temperature within a

populated fuse box (in a given location) will be higher. The limiting factor is

the plating. Sn-plating’s temperature limit is ≈130°C, and Ag-plating allows up

to 150°C at the terminal interface.

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 6

MINI® Blade Fuses Rated 58V

MINI® style fuse for use in 42V Systems. Same Time-Current characteristic as the 32V MINI®

fuse. Fits into standard MINI® fuse sockets. Has a rejection feature to prevent fuses with

lower voltage rating from being wrongfully inserted into the circuit. Current rating 2A - 30A

@58 VDC max.

Speciﬁcations

Interrupting Rating: 1000A @ 58 VDC

Voltage Rating: 58 VDC

*Component Level Temperature Range: -40˚C to +125˚C

**System Level Temperature Range: -40˚C to +105˚C

105°C is a typical system level temperature requirement.

Terminals: Ag plated zinc alloy

Housing Materials: PA66

Complies with: SAE J2077, SAE 2576

ISO 8820

UL 248 Special Purpose Fuses

MINI® Blade Fuses

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

110 360,000 s / –

135 0.75 s / 600 s

200 0.15 s / 5 s

350 0.080 s / 0.500 s

600 0.030 s / 0.100 s

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A²s)

0997002_ 2 171 55.60 2.8

0997003_ 3 153 33.75 9.4

0997004_ 4 121 23.48 17

0997005_ 5 129 17.75 25

099707.5_ 7.5 135 10.85 68

0997010_ 10 108 7.42 93

0997015_ 15 98 4.58 270

0997020_ 20 96 3.21 380

0997025_ 25 86 2.36 625

0997030_ 30 87 1.85 1130

0.825

Dimensions

Dimensions in mm

Temperature Rerating Curve

Time-Current

Characteristic Curves

Blade Fuses

Ordering Information

Part Number Package Size

0997xxx.WXN 3000

*Component Level Temperature = the maximum ambient

temperature that a single fuse will survive. This does not factor-in

the heat from a populated fuse box, but does include the heat from

the current load with the proper rerating. **System Level

Temperature represents the ambient temperature of the fuse box

at a location within the vehicle. The temperature within a populated

fuse box (in a given location) will be higher. The limiting factor is

the plating. Sn-plating’s temperature limit is ≈130°C, and Ag-plating

allows up to 150°C at the terminal interface.

littelfuse.com

7

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A²s)

0997002_ 2 171 55.60 2.8

0997003_ 3 153 33.75 9.4

0997004_ 4 121 23.48 17

0997005_ 5 129 17.75 25

099707.5_ 7.5 135 10.85 68

0997010_ 10 108 7.42 93

0997015_ 15 98 4.58 270

0997020_ 20 96 3.21 380

0997025_ 25 86 2.36 625

0997030_ 30 87 1.85 1130

ATOF® Blade Fuses Rated 32V

Developed by Littelfuse for the automotive industry, the ATOF® fuse has become the original

equipment circuit protection standard for foreign and domestic automobiles and trucks.

Readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage

electronic applications.

Blade Fuses

ATO® Ag (Silver plated)

Blade Fuses

ATOF® Blade Fuses

Ordering Information

Part Number Package Size

0287xxx.PXCN 2000

0287xxx.U 500

0287xxx.H 100

0287xxx.L 50

ATO® Ag Fuse

0287xxx.PXS 2000

Dimensions

Dimensions in mm

Temperature Rerating Curve

Time-Current

Characteristic Curves

Speciﬁcation ATOF® ATO Ag

(Tin Plated) (Silver Plated)

Voltage Rating: 32 VDC 32 VDC

Interrupting Rating: 1000A @ 32 VDC 1000A @ 32 VDC

*Component Level Temperature Range: -40˚C to +105˚C -40˚C to +125˚C

**System Level Temperature Range: -40˚C to +85˚C -40˚C to +105˚C

105°C and 85°C are typical system level temperature requirements.

Terminals: Sn plated zinc alloy Ag plated zinc alloy

Housing Material: PA66 PA66

Complies with: SAE J1284,ISO 8820-3 SAE J1284,ISO 8820-3

UL Listed: File AU1410 File AU1410

CSA Certified: File No. 29862 File No. 29862

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

0287001._ 1 176 123 0.4

0287002._ 2 141 53.5 1.4

0287003._ 3 137 31.1 7.4

0287004._ 4 136 22.8 14

0287005._ 5 128 17.85 26

028707.5_ 7.5 116 10.91 60

0287010._ 10 109 7.70 115

0287015._ 15 102 4.80 340

0287020._ 20 98 3.38 520

0287025._ 25 92 2.52 1080

0287030._ 30 84 1.97 1510

0287035._ 35 87 1.61 2280

0287040._ 40 96 1.44 3310

Time-Current Characteristics

% of Rating Current

Rating

Opening Time

Min / Max (s)

100 35A & 40A 360,000 s / –

110 1A-30A 360,000 s / –

135 1A & 2A

3A-40A

350 ms / 600 s

0.750 s / 600 s

160 1A-40A 250 ms / 50 s

200 1A & 2A

3A-40A

100 ms / 5.0 s

0.150 s / 5.0 s

350 1A & 2A

3A-40A

20 ms / 500 ms

80 ms / 500 ms

600 1A-30A

35A & 40A

– / 100 ms

– / 150 ms

*Component Level Temperature = the maximum ambient temperature that a

single fuse will survive. This does not factor-in the heat from a populated

fuse box, but does include the heat from the current load with the proper

rerating. **System Level Temperature represents the ambient temperature of

the fuse box at a location within the vehicle. The temperature within a

populated fuse box (in a given location) will be higher. The limiting factor is

the plating. Sn-plating’s temperature limit is ≈130°C, and Ag-plating allows up

to 150°C at the terminal interface.

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 8

Speciﬁcation MAXI MAXI Sn

(Silver Plated) (Tin Plated)

Voltage Rating: 32 VDC 32 VDC

Interrupting Ratings: 1000A @ 32 VDC 1000A @ 32 VDC

*Component Level Temperature Range: -40˚C to +125˚C -40˚C to +105˚C

**System Level Temperature Range: -40˚C to +105˚C -40˚C to +85˚C

105°C and 85°C are typical system level temperature requirements.

Terminals: Ag plated zinc alloy Sn plated zinc alloy

Housing Material: PA66 PA66

Complies with: SAE J 1888, SAE 2576, SAE J 1888, SAE 2576,

ISO 8820-3:2002(E) ISO 8820-3:2002(E)

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

100 360,000 s / –

135 60 s / 1,800 s

200 2 s / 60 s

350 0.20 s / 7 s

600 0.040 s / 1 s

Ordering Information

Part Number Package Size

0299xxx.ZXNV 1200

0299xxx.L 50

0299xxx.TXN 10

MAXI Sn Fuse

0299xxx.ZXT 1200

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

0299020._ 20 76 3.10 1100

0299025._ 25 75 2.39 2087

0299030._ 30 77 1.95 4070

0299035._ 35 75 1.71 6032

0299040._ 40 75 1.42 8450

0299050._ 50 73 1.10 11300

0299060._ 60 77 0.89 15300

0299070._ 70 61 0.64 21200

0299080._ 80 62 0.54 43600

MAXI Sn Fuse (tin plated)

Blade Fuses

MAXI Blade Fuses Rated 32V

The MAXI® fuse uses “Diffusion Pill Technology” to provide predictable time delay

characteristics and low heat dissipation.

MAXI Blade Fuses

Dimensions

Dimensions in mm

Temperature Rerating Curve

Time-Current

Characteristic Curves

*Component Level Temperature = the maximum ambient

temperature that a single fuse will survive. This does not factor-in

the heat from a populated fuse box, but does include the heat from

the current load with the proper rerating. **System Level

Temperature represents the ambient temperature of the fuse box

at a location within the vehicle. The temperature within a populated

fuse box (in a given location) will be higher. The limiting factor is

the plating. Sn-plating’s temperature limit is ≈130°C, and Ag-plating

allows up to 150°C at the terminal interface.

littelfuse.com

9

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

100 360,000 s / –

135 60 s / 1,800 s

200 2 s / 60 s

350 0.20 s / 7 s

600 0.040 s / 1 s

Blade Fuses

Speciﬁcations

Voltage Rating: 58 VDC

Interrupting Ratings: 1000A @ 58 VDC

*Component Level Temperature Range: -40˚C to +125˚C

**System Level Temperature Range: -40˚C to +105˚C

105°C is a typical system level temperature requirement.

Terminals: Ag plated zinc alloy

Housing Material: PA66

Complies with: SAE J 1888, SAE 2576

ISO 8820-3:2002(E)

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

100 360,000 s / –

135 60 s / 1,800 s

200 2 s / 60 s

350 0.20 s / 7 s

600 0.040 s / 1 s

Ordering Information

Part Number Package Size

0999xxx.ZXN 1200

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

0999020._ 20 76 3.10 1100

0999025._ 25 75 2.39 2087

0999030._ 30 77 1.95 4070

0999035._ 35 75 1.71 6032

0999040._ 40 75 1.42 8450

0999050._ 50 73 1.10 11300

0999060._ 60 77 0.89 15300

0999070._ 70 61 0.64 21200

0999080._ 80 62 0.54 43600

MAXI Blade Fuses Rated 58V

The MAXI® style fuse for use in 42V Systems. Same Time-Current characteristic as the 32V

MAXI fuse using “Diffusion Pill Technology” to provide predictable time delay characteristics

and low heat dissipation. Fits into standard MAXI® fuse sockets. Has a rejection feature to

prevent fuses with lower voltage rating from being wrongfully inserted into the circuit. Current

rating 20A - 80A @58 VDC max.

MAXI Blade Fuses

Dimensions

Dimensions in mm

Temperature Rerating Curve

Time-Current

Characteristic Curves

*Component Level Temperature = the maximum ambient

temperature that a single fuse will survive. This does not

factor-in the heat from a populated fuse box, but does include

the heat from the current load with the proper rerating.

**System Level Temperature represents the ambient

temperature of the fuse box at a location within the vehicle.

The temperature within a populated fuse box (in a given

location) will be higher. The limiting factor is the plating.

Sn-plating’s temperature limit is ≈130°C, and Ag-plating allows

up to 150°C at the terminal interface.

littelfuse.com 10

MCASE+ Cartridge Fuses Rated 32V 11

MCASE™ Cartridge Fuses Rated 32V 13

Low Profile JCASE® Fuse Rated 58V 14

JCASE® Fuse Rated 32V 15

Cartridge Fuses

littelfuse.com

11

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

85 %

90 %

95 %

100 %

105 %

110 %

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100110120130

Rerating

Factor

Temperature [oC]

Cartridge Fuses

MCASE+™ Cartridge Fuses Rated 32V

The Unslotted MCASE+™ Fuse is a cartridge style fuse up to 40A with female terminals

for 2.8 mm male terminals. The Slotted MCASE+™ Fuse is available in amperages up to

60A and can mate with larger male terminals (e.g., 6.3mm) or even mount directly to onto a

busbar. It has a miniaturized footprint for optimal usage of space. It is a time delayed fuse and

can handle inrush currents.

Speciﬁcations

Voltage Rating: 32 VDC

Interrupting Ratings: 1000A @ 32 VDC

Operating Temperature Range: -40˚C to +125˚C

Housing Material: PPA-GF33

Cover Material: PA66

Fuse Insertion Force: 50N (11.2lbf) Typical

Extraction Force: 4N Min. (0.9 lb). | 24.5N Max. (5.5 lb)

Conforms to: SAE 2741 and ISO 8820-4 in reference to electrical, mechanical

and environmental performance requirements

Temperature Rerating Curve

Time-Current Characteristic Curves

MCASE+™ Cartridge Fuses

Ratings

Part Number Type Current Rating*

(A)

Housing

Material Color

Max. Voltage

Drop (mV)

Cold Resistance

(mΩ)

I2t

(A2s)

0695015.PXP Unslotted 15 125 5.1 310

0695020.PXP Unslotted 20 125 3.4 750

0695025.PXP Unslotted 25 125 2.5 1300

0695030.PXP Unslotted 30 120 1.8 970

0695040.PXP Unslotted 40 120 1 1550

0695015.PXPS Slotted 15 125 5.1 310

0695020.PXPS Slotted 20 125 3.4 750

0695025.PXPS Slotted 25 125 2.5 1300

0695030.PXPS Slotted 30 120 1.8 970

0695040.PXPS Slotted 40 120 1.1 1550

0695050.PXPS Slotted 50 120 0.8 4000

0695060.PXPS Slotted 60 120 0.6 8500

Time-Current Characteristics

% of Rating Opening Time Min / Max

110 100hrs / –

135 60s / 1800s

200 2s / 60s

350 0.2s / 7s

600 0.04s / 1s

Ordering Information

Part Number Package Size

0695xxx.PXPS Slotted 2000

0695xxx.PXP Unslotted 2000

* The performance of the male terminal is critical to ensuring the fuse will function as

designed. The current-carrying capability of the mating terminal must be verified to

ensure proper system operation.

10

100

1000

NDS

MCASEFUSETIME‐CURRENTCHARACTERISTICCURVES

50A

60A

40A

30A

15A

20A

25A

0.01

0.1

1

10 100 1000 10000

TIMEINSECO

CURRENT IN AMPERES

CURRENT



IN



AMPERES

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 12

Dimensions

Dimensions in mm

Cartridge Fuses

MCASE+™ Cartridge Fuses Rated 32V

Slotted

Unslotted

MCASE+™

Fuse

LP JCASE®

Fuse

JCASE®

Fuse

littelfuse.com

13

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

MCASE™ Cartridge Fuses Rated 32V

The MCASE™ is a cartridge style fuse with female terminals for 2.8 mm male terminals. It has

a miniaturized footprint for optimal usage of space. It is a time delayed fuse and can handle in

rush currents.

Speciﬁcations

Voltage Rating: 32 VDC

Interrupting Ratings: 1000A @ 32 VDC

Operating Temperature Range: -40˚C to +125˚C

Housing Material: PPA-GF33

Cover Material: PA66

Insertion Force: 50N (11.2lbf) Typical

Extraction Force: 4N Min. (0.9 lb). | 24.5N Max. (5.5 lb)

Conforms to: SAE 2741 and ISO 8820-4 in reference to electrical, mechanical

and environmental performance requirements

MCASE™ Cartridge

Fuses

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

110 100 hrs / –

135 60 s / 1800 s

200 2 s / 60 s

350 0.2 s / 7 s

600 0.04 s / 1 s

Ordering Information

Part Number Package Size

0695xxx.PX4 2000

0695xxx.U 500

0695xxx.L 50

Dimensions

Dimensions in mm

Temperature Rerating Curve

Time-Current

Characteristic Curves

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Max. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

0695015._ 15 125 4.9 160

0695020._ 20 125 3.5 530

0695025._ 25 125 2.3 1140

0695030._ 30 120 1.8 970

0695040._ 40 120 1.3 2950

0.0

0.1

1.0

10.0

100.0

1 10 100 1000

Time (s)

Current (A)

15

20

25

30

40

0.0

0.1

1.0

10.0

100.0

1 10 100 1000

Time (s)

Current (A)

15

20

25

30

40

85 %

90 %

95 %

100 %

105 %

110 %

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100110120130

Rerating

Factor

Temperature [oC]

MCASE™

LP JCASE

JCASE

Cartridge Fuses

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 14

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

100 360,000 s / –

135 60 s / 1800 s

200 4 s / 60 s

350 0.200 s / 7 s

600 0.040 s / 1 s

Ordering Information

Part Number Package Size

0895xxx.Z 2000

0895xxx.U 500

0895xxx.T 10

Corresponding holder see Section “Fuse Holders.”

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Max. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A²s)

0895020_ 20 125 4.48 400

0895025_ 25 125 3.39 680

0895030_ 30 125 2.68 1780

0895040_ 40 125 1.89 5470

0895050_ 50 125 1.08 4880

0895060_ 60 125 0.83 9600

Littelfuse, Inc. Confidential October 2013

0.01

0.1

1

10

100

1000

10 100 1000 10000

TIME IN SECONDS

CURRENT IN AMPERES

LOW PROFILE (LP) JCASE FUSE TIME-CURRENT CHARACTERISTIC CURVES

20A

25A

30A

40A

50A

60A

Cartridge Fuses

Low Proﬁle JCASE® Cartridge Fuses Rated 58V

The Low Profile JCASE® fuse has similar performance characteristics as the standard JCASE®

fuse. The lower overall height reduction allows for more space and weight savings and also

allows for a shorter male blade terminal, saving additional weight and material savings in fuse

box designs.

Speciﬁcations

Voltage Rating: 58 VDC

Interrupting Rating: 1000A @ 58 VDC

Operating Temperature Range: -40˚C to + 125˚C

Housing Material: PPA-GF13

Cover Material: PA66

Insertion Force: 53N Max. (12 lb.)

Extraction Force: 9N Min (2 lb.)

Conforms to: SAE 2741 and ISO 8820-4 except for the life test – LF

specification is 100-hours at 100% of rated current

Dimensions

Dimensions in mm

Temperature Rerating Curve

Time-Current

Characteristic Curves

Low Proﬁle JCASE®

Cartridge Fuses

littelfuse.com

15

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

Cartridge Fuses

Speciﬁcations

Voltage Rating: 32 VDC

Interrupting Rating: 1000A @ 32 VDC

Operating Temperature Range: -40˚C to + 125˚C

Housing Material: PA-GF13HS

Housing Material (60A): PA-GF13

Cover Material: PC

Insertion Force: 53N max. (12 lb.)

Extraction Force: 9N min. (2 lb.)

Complies with: SAE 2741, ISO 8820-4

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

110 360,000 s / –

135 60 s / 1800 s

200 4 s / 60 s

350 0.200 s / 7 s

600 0.040 s / 1 s

Ordering Information

Part Number Package Size

0495xxx.ZXA 2200

0495xxx.UXA 500

0495xxx.TXA 10

Ratings

Part Number Current Rating

(A)

Housing

Material Color

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A²s)

0495020_ 20 106 4.29 1750

0495025_ 25 101 3.28 3220

0495030_ 30 91 2.12 1480

0495040_ 40 87 1.30 3650

0495050_ 50 88 0.99 8750

0495060_ 60 87 0.76 19500

JCASE® Cartridge Fuses Rated 32V

The JCASE® is a cartridge style fuse with female terminal design. JCASE® provides both

increased time delay and low voltage drop to protect high current circuits. JCASE® has the

ability to handle inrush currents.

Dimensions

Dimensions in mm

0.01

0.1

1

10

100

1000

10 100 1000 10000

20A

25A

30A

40A

50A

60A

Temperature Rerating Curve

Time-Current

Characteristic Curves

JCASE®

Cartridge Fuses

littelfuse.com 16

ZCase Masterfuse 17

Masterfuse 18

ZCase Single Starter 19

MEGA® Fuse Rated 32V 21

MEGA® Low Temperature Fuse Rated 32V 22

UL Recognized Mega® Fuse Rated 32V 24

MIDI® Style Bolt-down Fuse Rated 32V 25

BF1 Fuse Rated 32V 27

BF1 Fuse Rated 58V 29

BF2 Fuse Rated 32V 30

BF2 Fuse Rated 58V 31

CF Fuse Rated 58V 32

Fuse Strips 33

High Current Fuses

littelfuse.com

17

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

Speciﬁcations

Mating Terminal Options: M10, M8, M6, M5 bolt-down connections or female terminals

Operating Temperature Range: -40°C to 125°C

Housing Material: PPA-GF33HS

Fuse Ratings Available: 30-500A

Voltage Rating: 32Vdc

Materials: Copper terminals (silver or tin plating options available)

Complies with: ISO 8820-5

High Current Fuses

ZCASE Masterfuse

The ZCASE Masterfuse product is the smallest high current distribution product in the industry.

It utilizes the Z-Axis effectively to create a compact design which takes one third the footprint

of a traditional solution. This package allows the user to replace multiple discrete fuses in a

power distribution box with a single component, thus eliminating additional bolts, bus bars and

interconnects. The output bolt is integrated into the fuse creating a reliable interface to the

mating terminal due to its high torque withstandablity. Keying features are available on each

bolt position to ensure the correct mating ring terminal is used during assembly. The solution

can also be connectorized to mate to high current terminals. This compact design enables the

integration of the high current distribution into the main junction box due to its small footprint.

This eliminates the need for a separate fuse box for high current distribution. By reducing the

number of components required, overall system costs are reduced.

The ZCASE Masterfuse product is available as a standard design with customized fuse ratings.

The modular manufacturing approach enables a wide range of configurations within a product

family. In addition, the form factor can be fully customized for specific applications to further

optimize the system. Contact Littelfuse to review your application needs.

Features and Beneﬁts:

Miniaturization: Compact design enables a 2/3 footprint reduction when compared to a

traditional solution.

Integration: Enables the integration of the prefuse function into the main junction box due to

its small footprint.

ZCASE Masterfuses

Ordering Information

Part Number Description Package Size

05980015Z-CN MFUSE ZCASE 32V 2-Way 125A - 200A 200

05980016Z-CN MFUSE ZCASE 32V 2-Way 125A - 125A 200

05980017Z-CN MFUSE ZCASE 32V 2-Way 275A - 200A 200

05980019Z MFUSE ZCASE 32V 1-MEGA + 4-MIDI 100

05980020Z MFUSE ZCASE 32V 2-MEGA + 2-MIDI 50

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 18

Speciﬁcations

Mating Terminal Options: M10, M8, M6, M5 bolt-down connections or female terminals

Operating Temperature Range: -40°C to 125°C

Housing Material: PPA-GF33HS

Fuse Ratings Available: 30A-250A Full Range

300A-600A Short Circuit

Voltage Rating: 32Vdc

Materials: Copper terminals (silver or tin plating options available)

Complies with: ISO 8820-5

Note: Short circuit protected fuses have a limited continious current.

High Current Fuses

MASTERFUSE

The MASTERFUSE product is a configurable fuse solution combining several different fuse

types (i.e. MEGA and MIDI) and ratings in one compact package. This fuse package allows the

user to replace multiple discrete fuses in a power distribution box with a single component,

thus eliminating additional bolts, bus bars, and interconnects that are currently used. By

reducing the number of connections required, overall system reliability is increased while cost

is decreased.

Each MASTERFUSE is customized to the user’s application creating an optimized circuit

protection package. Contact Littelfuse to review your application needs.

Features and Beneﬁts:

Increased Reliability: due to reduced number of terminal interfaces

System Cost Savings: Material savings due to reduced number of components

required. Assembly cost savings due to reduced number of

operations required for installation.

Fuse Array Customization: Ability to mix different fuse types (i.e. MEGA, MIDI, etc.)

in one compact package

Termination Options: Ability to mate to female terminals to enable “bolt-less” design

Marking: Custom marking options available

Masterfuses

littelfuse.com

19

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

High Current Fuses

Speciﬁcations

Operating temperature: -40 to 125°C

Housing Material: PPA-GF33HS

Insulating Tube: Out of ceramic

Terminal: Tin plated Copper

Voltage Rating: 32V DC

Interrupting Rating: 2000A @ 32V VDC

Mounting Torque M6: 9.8Nm±1.4Nm

Mounting Torque M8: 14Nm±2Nm

Ordering Information

Part Number Package Size

3298XXX.ZXSTA 480

3298XXX.Z 480

3298XXX.H 100

Ratings

Part number Current Rating

(A)

Wire size

(mm2)

Max. Voltage Drop

(mV)

Average Cold Resistance

(mΩ)

I²t

(A2s)

3298040._ 40 4 110 1.53 5000

3298060._ 60 6 110 0.98 18000

3298080._ 80 10 110 0.715 15500

3298100._ 100 16 110 0.57 31000

3298125._ 125 16 110 0.39 45000

3298150._ 150 25 110 0.32 75000

3298175._ 175 25 110 0.26 140000

3298200._ 200 35 110 0.231 235000

3298225._ 225 35 110 0.175 95000

3298250._ 250 50 110 0.167 160000

3298300.ZXSTA 300 35 70 0.128 310000

3298350.ZXSTA 350 35 70 0.103 570000

3298400.ZXSTA 400 50 70 0.084 870000

3298500.ZXSTA 500 50 70 0.065 1550000

3298600.ZXSTA 600 50 70 0.049 3000000

3298900._ SHUNT 50 - - -

Time-Current Characteristics

% of Rating

Opening Time Min / Max (s)

40A - 250A 300A - 600A

50 – / – 14,400 / –

100 14,400 / – – / –

135 120 / 1800 – / –

200 1 / 15 1 / 40

350 0.300 / 5 0.300 / 5

500 – / – 0.100 / 1 (only for 500A)

600 0.100 / 1 0.100 / 1 (except 600A)

ZCASE Single MEGA/Starter Fuse

The Single ZCASE is a Minimal Footprint Bolt Down Fuse with a wide rating range up to

600A in the same packaging size. The Time Current characteristic is similar to the well known

MEGA Design and can used as full wire protection until 250A. Higher ratings mostly used for

typically Starter Fuse application as a protector fuse. The fuse design is optimized for a one

bolt connection M6 (40A - 250A) or M8 (300A - 600A) and can used directly on a battery post

or busbar connection. Littelfuse is offering a complete solution for the necessary stud and

different busbar connections including some battery clamps.

ZCASE Single Mega/Starter

Fuse

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 20

Time-Current Characteristic Curves

All ZCASE Starters T/C curves were

performed on the left or right side of

the metal bar as shown in pictures

above. A 50mm² Cu wire was mounted

at the mid hole (M8) of the metal bar

as current feed.

Examples of Single ZCASE Applications

Please contact your Littelfuse representative

for application support and information on

mating hardware.

High Current Fuses

ZCASE Single Mega/Starter Fuse

Dimensions

Dimensions in mm

1

2

3

No. Description

1 Single ZCASE Mega

2 Busbar PN: 3298002ZXBB

3 Insulting Bolt M8 PN: 3298001ZXM8

Reference Time-Current Characteristic Curves (Recorded@23˚) Reference Time-Current Characteristic Curves (Recorded@23˚)

littelfuse.com

21

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

0.1

1

10

100

1000

100 1000 10000

TIME IN SECONDS

CU RRENT IN AMPERES

125

150

175

200

225

250

275

High Current Fuses

Speciﬁcations

Interrupting Rating: 2000A @ 32 VDC

Voltage Rating: 32 VDC

Operating Temperature Range: -40˚C to + 125˚C

Housing Material: PPA-GF33HS

Terminals: Copper (Silver plated copper available)

M8 bolts

Mounting Torque: 12-18 Nm M8

Last figure of article no. = packaging code

Time-Current Characteristics

% of Rating

Opening Time Min / Max (s)

125 150-275

100 4 hrs / – 4 hrs / –

135 120 s / 1800 s 120 s / 1800 s

200 1 s / 50 s 1 s / 150 s

350 0.300 s / 5 s 0.300 s / 5 s

600 0.100 s / 1 s 0.100 s / 1 s

Ratings

Part Number Current Rating

(A)

Font Color Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

0298125.ZXBLT 125 67 0.330 57000 A

0298150.ZXEH-LT 150 62 0.258 59000 A

0298175.ZXEH-LT 175 65 0.232 123000 A

0298200.ZXEH-LT 200 61 0.214 140000 A

0298225.ZXEH-LT 225 57 0.177 317000 A

0298250.ZXEH-LT 250 54 0.144 637000 A

0298275.ZXEH-LT 275 53 0.122 800000 A

MEGA® Low Temperature Fuse Rated 32V

The MEGA® Fuse is designed for high current circuit protection up to 275A with “Diffusion

Pill Technology.” The MEGA® Fuse also provides time delay characteristics. Designed

and patented by Littelfuse, the MEGA® Fuse is ideal for battery and alternator protection

application and other heavy gauge cables requiring ultra-high current protection.

MEGA® Low Temperature Fuses

Temperature Rerating Curve

Time-Current Characteristic Curves

9.9 (.39")

29.2 (1.15")

Dimensions

Dimensions in mm

Ordering Information

Part Number Rating Package

Size Plating Bolt Hole

Qty

0298125.ZXBLT 125 500 Ag 2

0298xxx.ZXEH-LT 150-275 500 None 2

0298xxx.UX1M8LT 150-275 500 None 1

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 22

High Current Fuses

Speciﬁcations

Interrupting Rating: 2000A @ 32 VDC

Voltage Rating: 32 VDC

Operating Temperature Range: -40˚C to + 125˚C

Housing Material: PPA-GF33HS

Clear Top Housing Material: PES (top) PPA-GF33HS (bottom)

Terminals: Copper (Silver plated copper available)

M6 or M8 bolts available

Mounting Torque: 8-14 Nm M6

12-18 Nm M8

Complies with: ISO 8820-5

Ordering Information

Part Number Rating Package

Size Plating Bolt

Size

Bolt Hole

Qty

0298xxx.ZXEH 80 - 250 500 None M8 2

0298xxx.ZXH 300 - 500 500 None M8 2

0298xxx.UX1M8 80 - 500 500 None M8 1

0298xxx.ZXB 40 - 250 500 Ag M8 2

0298xxx.ZXA 80 - 500 500 None M6 2

MEGA Clear Top Housing Material Fuse

0298xxx.UXT 40 - 250 500 None M8 2

Time-Current Characteristics

% of

Rating

Opening Time Min / Max (s)

40-250 300-500

75 – / – 14,400 s / –

100 14,400 s / – – / –

135 120 s / 1800 s – / –

200 1 s / 15 s 1 s / 15 s

350 0.300 s / 5 s 0.500 s / 5 s

600 0.100 s / 1 s 0.100 s / 1 s

MEGA® Clear Top Housing Fuse

MEGA® and MEGA® Clear Top Fuse Rated 32V

The MEGA® Fuse is designed for high current circuit protection up to 500A with “Diffusion

Pill Technology.” The MEGA® Fuse also provides time delay characteristics. Designed

and patented by Littelfuse, the MEGA® Fuse is ideal for battery and alternator protection

application and other heavy gauge cables requiring ultra-high current protection.

MEGA® Fuses

Note 1: Not mentioned in ISO standards Note 2: Short Circuit Protector only

* 0298xxx.ZXB has white font color on all ratings.

** Voltage Drop measurements for short circuit protectors taken at 75% of rated current.

Ratings

Part Number Current Rating

(A)

Font Color* Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

0298040._140 – 132 2.510 8700

0298060._160 – 119 1.504 21000

0298080._ 80 87 0.720 21500

0298100._ 100 87 0.562 31100

0298125._ 125 80 0.423 57800

0298150._ 150 92 0.352 100000

0298175._ 175 86 0.294 168000

0298200._ 200 83 0.257 204000

0298225._ 225 82 0.222 257000

0298250._ 250 82 0.201 389000

0298300._2300 74 ** 0.167 315000

0298350._2350 68 ** 0.138 500000

0298400._2400 64 ** 0.126 610000

0298450._2450 60 ** 0.112 1050000

0298500._2500 58 ** 0.092 2050000

littelfuse.com

23

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

Time-Current Characteristic Curves

1.83 (.072 ) 300-500A

300-500A

9.9 (.39")

M6: 6.60 (.26")

M8: 8.64 (.34")

29.2 (1.15")

10.72 (.422")

40-250A

Temperature Rerating Curve

High Current Fuses

MEGA® Fuse Rated 32V

Dimensions

Dimensions in mm

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 24

High Current Fuses

Speciﬁcations

Interrupting Rating: 2000A @ 32 VDC

Voltage Rating: 32 VDC

Operating Temperature Range: -40˚C to + 125˚C

Housing Material: PPA-GF30FR

Terminals: Copper

M8 bolts holes

Mounting Torque: 12-18 Nm M8

Complies with: ISO 8820-5 ,UL 248 Special Purpose Fuses

Ordering Information

Part Number Package Size

0298xxx.ZXEH-UL 500

Time-Current Characteristics

% of Rating

Opening Time Min / Max (s)

80A-175A

75 – / –

100 14,400 s / –

135 120 s / 1800 s

200 1 s / 15 s

350 0.300 s / 5 s

500 – / –

600 0.100 s / 1 s

Ratings

Part Number Current Rating

(A) Font Color Typ. Voltage Drop

(mV)

I2t

(A2s)

0298080.ZXEH-UL 80 87 21500

0298100.ZXEH-UL 100 87 31100

0298125.ZXEH-UL 125 80 57800

0298150.ZXEH-UL 150 92 100000

0298175.ZXEH-UL 175 62 168000

UL Recognized MEGA® Fuses Rated 32V

The MEGA® Fuse is designed for high current circuit protection with “Diffusion Pill

Technology.” The MEGA® Fuse also provides time delay characteristics. Designed and

patented by Littelfuse, the MEGA® Fuse is ideal for battery and alternator protection

application and other heavy gauge cables requiring ultra-high current protection.

Dimensions

Dimensions in mm

Temperature Rerating Curve

Time-Current

Characteristic Curves

UL Recognized MEGA® Fuses

9.9 (.39")

29.2 (1.15")

7

littelfuse.com

25

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

High Current Fuses

MIDI®, Clear MIDI®, and One Hole MIDI® Style Bolt-down Fuse

Rated 32V

This MIDI® style fuse offers a bolt-on space saving fuse for high current wiring protection

and provides time delay characteristics with “Diffusion Pill Technology”. The MIDI® was

designed and patented by Littelfuse.

MIDI® Fuses

Clear MIDI® Fuses

(transparent nylon

composite cover)

One Hole MIDI® Fuses

Speciﬁcations

Interrupting Rating: 1000A @ 32 VDC

Voltage Rating: 32 VDC

Operating Temperature Range: -40˚C to + 125˚C

Black Housing Material: PA-GF25FR

Clear Housing Material: PA-6/66

Terminal: Tin plated Copper

Mounting Torque M5: 4.5 Nm +/- 1Nm

Mounting Torque M6: 6.0 Nm +/- 1Nm

Complies with: ISO 8820-5, UL 248 Special Purpose Fuses

Ordering Information

Part Number Package

Size

Housing

Color

Bolt

Size

Bolt Hole

Qty Mfg Location

0498xxx.M 1000 Black M5 2Mexico

0498xxx.M-CN 1000 Black M5 2 China

0498xxx.H 100 Black M5 2Mexico

0498xxx.MXM6 1000 Black M6 2Mexico

0498xxx.MXM6-CN 1000 Black M6 2 China

0498xxx.MX1M5 1000 Black M5 1Mexico

0498xxx.MX1M5-CN 1000 Black M5 1 China

0498xxx.MX1M6 1000 Black M6 1 China

0498xxx.MX1M6-CN 1000 Black M6 1 China

0498xxx.MXT 1000 Clear M5 2Mexico

0498xxx.MXT-CN 1000 Clear M5 2 China

0498xxx.MXTM6 1000 Clear M6 2 Mexico

0498xxx.MXTM6-CN 1000 Clear M6 2 China

* Materials manufactured in Asia are produced to the same specifications as materials manufactured in North America, and

meets the same test requirements. Multiple production locations are for capacity expanison only.

Ratings

Part Number Current

Rating

(A)

Font

Color

Typ. Voltage Drop

max. (mV)

Cold Resistance

(mΩ)

I2t

(A2s)

0498023._223 90 3.43 1,800

0498030._230 65 2.06 4,200

0498040._ 40 65 1.398 10,000

0498050._ 50 65 1.025 13,000

0498060._ 60 68 0.865 21,700

0498070._ 70 70 0.72 24,000

0498080._ 80 58 0.541 24,600

0498100._ 100 60 0.457 51,300

0498125._2125 71 0.394 73,200

0498150._1,2 150 77 0.323 81,900

0498175._1,2 175 77 0.285 100,000

0498200._1,2 200 77 0.261 125,000

Time-Current Characteristics

% of Rating

Opening Time Min / Max (s)

30-125A 150-200A

75 – / – 360,000 s / –

100 360,000 s / – – / –

110 14,400 s / – – / –

150 90 s / 3,600 s – / –

200 3 s / 100 s 1 s / 15 s

300

350

0.3 s / 3 s

– / –

0.3 s / 5 s

500 0.1 s / 1 s 0.1 s / 1 s

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 26

Dimensions

Dimensions in mm

Part

Number

“A”

mm (inch)

“B”

mm (inch)

“C”

mm (inch)

0498030._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315)

0498040._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315)

0498050._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315)

0498060._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315)

0498070._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315)

0498080._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315)

0498100._ 0.63 (0.025) 4.3 (0.169) 8.3 (0.327)

0498125._ 0.63 (0.025) 4.3 (0.169) 8.3 (0.327)

0498150._ 0.63 (0.025) 4.3 (0.169) 8.3 (0.327)

0498175._ 0.63 (0.025) 4.3 (0.169) 8.3 (0.327)

0498200._ 0.63 (0.025) 4.3 (0.169) 8.3 (0.327)

MIDI®, Clear MIDI®, and One Hole MIDI® Style Bolt-down Fuse Rated 32V

MIDI Rerating Curve

85

90

95

100

105

110

115

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120

Ambient Temperature (C)

Rerating Factor (% Rated Current)

Temperature Rerating Curve

Time-Current Characteristic Curves

30A

40A

50A

60A

70A

80A

100A

125A

150A

200A

175A

1000

100

10

1

0.1

0.01

10000100010010

TIME IN SECONDS

High Current Fuses

littelfuse.com

27

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

High Current Fuses

Speciﬁcations

Operating Temperature: -40 to 125 degrees C

Housing Material: PET-GF30

Clear Housing Material: PES

Terminals: Copper alloy, gal. Sn

2 x M5 or M6 bolts, distance 30 mm

Mounting Torque M5: 4.5 Nm +/- 1Nm

Mounting Torque M6: 6.0 Nm +/- 1Nm

Interrupting Rating: 23A & 30A: 1000A @32 VDC

40A - 150A: 2000A @32 VDC

200A: 1500A @32 VDC

Complies with: ISO 8820-5, UL 248 Special Purpose Fuses

Ordering Information

Part Number Package

Size

Bolt

Size

Bolt Hole

Qty Ratings

153.5631.xxx2 1000 M5 2 30A-200A

153.5631.xxx1 10 M5 2 30A-200A

153.7010.xxx2 1000 M6 2 30A-150A

153.7000.xxx2 500 M6 2 200A

153.0010.xxx2 1000 M6 1 60A-125A

153.0020.xxx2 500 -- 0 30A-200A

Time-Current Characteristics

% of

Rating

Opening Time Min / Max (s)

23-150A Fuses 150-200A Short

Circuit Protectors

75 – / – 360,000 s / –

100 360,000 s / – – / –

110 14,400 s / – – / –

150 90 s / 3,600 s – / –

200 3 s / 100 s 1 s / 15 s

300 0.300 s / 3 s – / –

350 – / – 0.300 s / 5 s

500 0.100 s / 1 s – / –

600 – / – 0.100 s / 1 s

BF1 and One-Hole BF1 Fuse Rated 32V

This BF1 fuse is rated at 32V and offers a bolt-on fuse for high current wiring

protection. Current rating 23A - 200A; with transparent housing material for easy

detection of blown fuses. One-Hole BF1 fuses have a current rating 60-125A.

BF1 Fuses

One Hole BF1 Fuses

Ratings

Part Number Current

Rating

(A)

Housing

Material Color

Typ. Voltage

Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

M5 M6

153.5631.523_1,2 - 23 105 3.50 1,400

153.5631.530_ 153.7010.530_ 30 105 2.70 5,100

153.5631.540_ 153.7010.540_ 40 90 1.56 6,800

153.5631.550_ 153.7010.550_ 50 80 1.03 6,900

153.5631.560_ 153.7010.560_ 60 75 0.75 16,200

153.5631.570_ 153.7010.570_ 70 70 0.64 22,000

153.5631.580_ 153.7010.580_ 80 70 0.55 25,600

153.5631.610_ 153.7010.610_ 100 70 0.44 42,500

153.5631.612_ 153.7010.612_ 125 70 0.34 62,500

153.5631.615_1153.7010.615_1150 70 0.29 83,400

153.5631.620__3153.7000.620__3200 70 0.24 126,000

Corresponding holder see Section “Fuse Holders.”

Note 1: not mentioned in ISO standard Note 2: Not UL rated Note 3: Short Circuit Protector only Note 4: For

1-Hole and No-Hole values, refer to 2-Hole version values

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 28

High Current Fuses

Dimensions

Dimensions in mm

Pre-Arcing Time-Limits

23 A - 150 A: FI = 1.25 (max. operating current: 0.8 x Irat at 23°C)

200 A: FI = 2.00 (max. operating current: 0.5 x Irat at 23°C)

Derating

Individual derating curves by rating can be ordered through

your Littelfuse contact person.

BF1 and One-Hole BF1 Fuse Rated 32V

littelfuse.com

29

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

High Current Fuses

Speciﬁcations

Operating temperature: -40 to 125 degrees C

Housing Material: PET-GF30

Clear Housing Material: PES

Terminals: Copper alloy, gal. Sn

2 x M5 or M6 bolts, distance 30 mm

Mounting Torque M5: 4.5 Nm +/- 1Nm

Mounting Torque M6: 6.0 Nm +/- 1Nm

Interrupting Rating: 1000A @ 58 VDC

Complies with: ISO 8820-5, UL 248 Special Purpose Fuses

Ordering Information

Part Number Package

Size

Bolt

Size

Bolt Hole

Qty

142.5631.xxx2 500 M5 2

142.7010.xxx2 500 M6 1

142.7020.xxx2 500 N/A 0

Note 1: Not UL rated Note 2: Short Circuit Protector only

Ratings

Part Number M5 Part Number M6

Current

Rating

(A)

Housing

Material Color

Typ. Voltage

Drop

(mV)

Cold

Resistance

(mΩ)

I2t

(A2s)

142.5631.53021 142.70xx.5302130 105 2.70 5,100

142.5631.5402 142.70xx.5402 40 90 1.56 6,800

142.5631.5502 142.70xx.5502 50 80 1.03 6,900

142.5631.5602 142.70xx.5602 60 75 0.75 16,200

142.5631.5702 142.70xx.5702 70 70 0.64 22,000

142.5631.5802 142.70xx.5802 80 70 0.55 25,600

142.5631.6102 142.70xx.6002 100 70 0.44 42,500

142.5631.6122 142.70xx.6122 125 70 0.34 62,500

142.5631.6152 142.70xx.6152 150 70 0.29 83,400

142.5631.62022 142.70xx.6202 200 70 0.24 126,000

Time-Current Characteristics

% of

Rating

Opening Time Min / Max (s)

30-150A Fuses 200A Short Circuit Protectors

75 – / – 360,000 s / –

100 360,000 s / – – / –

110 14,400 s / – – / –

150 90 s / 3,600 s – / –

200 3 s / 100 s 1 s / 15 s

300 0.300 s / 3 s – / –

350 – / – 0.300 s / 5 s

500 0.100 s / 1 s – / –

600 – / – 0.100 s / 1 s

BF1 Fuses Rated 58V

This BF1 fuse is rated at 58V and offers a bolt-on fuse for high current wiring

protection. Current rating 30A - 200A; with transparent housing material for easy

detection of blown fuses.

30 A - 150 A: FI = 1.25

(max. operating current:0.8 x Irat at 23°C)

200 A: FI = 2.00

(max.operating current: 0.5 x Irat at 23°C)

Derating

Individual derating curves by rating can be ordered through your Littelfuse contact person.

Dimensions

Dimensions in mm

Pre-Arcing Time-Limits

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 30

High Current Fuses

Speciﬁcations

Housing Material: PET-GF30

Clear Housing Material: PES

Terminal: Copper alloy, gal. Sn

2 x M8 bolts, Distance 51 mm

Mounting Torque: 12.0 Nm +/- 1Nm

Breaking Capacity: 100 A - 300 A: 2.000 A, 32V, DC

400 A - 500 A: 1.500 A, 32V, DC

Complies with: ISO 8820-5, UL 248 Special Purpose Fuses

Ordering Information

Part Number Package Size

Standard M8 Holes

153.5395.xxxx 200

M6 Holes

153.7011.xxxx 200

Time Current Characteristics

% of Rating

Opening Time Min / Max (s)

100A - 250A 300A - 500A

75 – / – 4 h / –

100 4 h / – – / –

135 120 s / 1,800 s – / –

200 1 s / 15 s 1 s / 15 s

350 0.300 s / 5 s 0.500 s / 5 s

600 0.100 s / 1 s 0.100 s / 1 s

Last figure of article no. = packaging code

Corresponding holder see Section “Fuse Holders.”

* Parts with asterisk are short circuit protectors only.

Ratings

Part Number

M8 Holes

Part Number

M6 Holes

Current

Rating

(A)

Housing

Color

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

153.5395.610_ 153.7011.610_ 100 110 0.70 46,800

153.5395.612_ 153.7011.612_ 125 110 0.52 118,100

153.5395.615_ 153.7011.615_ 150 110 0.42 113,400

153.5395.617_ 153.7011.617_ 175 110 0.36 154,400

153.5395.620_ 153.7011.620_ 200 110 0.34 288,000

153.5395.622_ 153.7011.622_ 225 110 0.29 236,000

153.5395.625_ 153.7011.625_ 250 110 0.25 292,500

153.5395.630_* 153.7011.630_* 300 110 0.21 486,000

153.5395.640_* 153.7011.640_* 400 110 0.13 964,000

153.5395.650_* 153.7011.650_* 500 110 0.12 1,449,000

BF2 Fuses Rated 32V

This BF2 fuse is rated at 32V and offers a bolt-on fuse for high current wiring protection.

Current rating 100A - 500A; with transparent housing material for easy detection of

blown fuses.

BF2 Fuses

Time-Current Characteristic Curves

100A-300A: FL=1,25 (max. operating current: 0,8 x Irat at 23°C)

400A-500A: FL=2,00 (max. operating current: 0,5 x Irat at 23°C)

0,1

1

10

100

1000

10 100 1000 10000

TIME [s]

CURRENT [A]

TIME-CURRENT CHARACTERISTIC CURVES (RECORDED@23°C)

100A

125A

150A

175A

200A

225A

250A

300A

400A

500A

Dimensions

Dimensions in mm

littelfuse.com

31

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

High Current Fuses

Speciﬁcations

Housing Material: PET-GF30

Clear Housing Material: PES

Terminal: Copper alloy, gal. Sn

2 x M8 bolts, Distance 51 mm

Mounting Torque: 12.0 Nm +/- 1Nm

Breaking Capacity: 1000A, 58V DC

Complies with: ISO 8820-5, UL 248 Special Purpose Fuses

Ordering Information

Part Number Package Size

142.5395.xxxx 200

Time Current Characteristics

% of Rating

Opening Time Min / Max (s)

100A - 250A 300A

75 – / – – / –

100 4 h / – 4 h / –

135 120 s / 1,800 s – / –

200 1 s / 15 s 1 s / 15 s

350 0.300 s / 5 s 0.500 s / 5 s

600 0.100 s / 1 s 0.100 s / 1 s

Ratings

Part Number Current Rating

(A) Housing Color Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

142.5395.6102 100 110 0.70 46,800

142.5395.6122 125 110 0.52 118,100

142.5395.6152 150 110 0.42 113,400

142.5395.6172 175 110 0.36 154,400

142.5395.6202 200 110 0.34 288,000

142.5395.6222 225 110 0.29 236,000

142.5395.6252 250 110 0.25 292,500

142.5395.6302¹ 300 110 0.21 486,000

BF2 Fuses Rated 58V

This BF2 fuse is rated at 58V and offers a bolt-on fuse for high current wiring protection.

Current rating 100A - 300A; with transparent housing material for easy detection of

blown fuses.

BF2 Fuses

Time-Current Characteristic Curves

Dimensions

Dimensions in mm

100A-300A: FL=1,25 (max. operating current: 0,8 x Irat at 23°C)

400A-500A: FL=2,00 (max. operating current: 0,5 x Irat at 23°C)

0,1

1

10

100

1000

10 100 1000 10000

TIME [s]

CURRENT [A]

TIME-CURRENT CHARACTERISTIC CURVES (RECORDED@23°C)

100A

125A

150A

175A

200A

225A

250A

300A

400A

500A

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 32

High Current Fuses

Dimensions

Dimensions in mm

Pre-Arcing Time-Limits

Speciﬁcations

Insulating Body Material: Ceramic

Cover Material: PES

Visible melting-element

Interrupting Rating: 2,000A @58 VDC

Complies with: ISO 8820-6, DIN 72581-5, UL 248 Special Purpose Fuses

cULus Recognized: File No. E211637

Ordering Information

Part Number Package Size

155.0892.xxx1 100

FI = 1.25 (max. operating current:

0.8 x Irat at 23°C)

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

100 360,000 s / –

135 – / 3,600 s

150 1 s / 600 s

200 0.200 s / 60 s

300 0.050 s / 1.5 s

400 0.020 s / 0.50 s

600 – / 0.20 s

Ratings

Part Number Current Rating

(A)

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

155.0892.5501 50 100 1.20 1,900

155.0892.5751 75 90 0.60 12,000

155.0892.6101 100 80 0.60 14,000

155.0892.6121 125 75 0.45 51,000

155.0892.6151 150 70 0.35 63,800

155.0892.6171 175 70 0.25 120,000

155.0892.6201 200 65 0.25 172,800

155.0892.6251 250 70 0.20 330,000

155.0892.6301 300 70 0.15 372,000

Insert CF8-Fuse links only in conjunction with the insulating nuts, see Section “Fuse Holders.”

Corresponding battery clamp see Section “Fuse Holders.”

CF Fuses Rated 58V

Main Fuse for mounting with battery clamp on the battery pole. Voltage rating 58

VDC, Current rating 50A - 300A. With transparent cover material for visual inspection of

melting element.

CF Fuses

littelfuse.com

33

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

100 360,000 s / –

135 – / 3,600 s

150 1 s / 600 s

200 0.200 s / 60 s

300 0.050 s / 1.5 s

400 0.020 s / 0.50 s

600 – / 0.20 s

High Current Fuses

Dimensions

Dimensions in mm

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

130 3,600 s / –

250 – / 60 s

Pre-Arcing Time-Limits

Ratings

Part Number Current Rating

(A)*

Typ. Voltage Drop

(mV)

Material Thickness “S”

(mm)

156.5611.5301 30 70 0.25

156.5611.5401 40 70 0.20

156.5611.5501 50 70 0.25

156.5611.5601 60 70 0.40

156.5611.5701 70 70 0.45

156.5611.5801 80 70 0.50

156.5611.6101 100 70 0.70

156.5611.6111 120 70 0.70

156.5611.6121 125 70 0.70

156.5611.6151 150 70 1.00

Speciﬁcations

Voltage Rating: 36 VDC

Interrupt Ratings: up to 375A

Operating Temperature Range: -40° to 125°C

Insulating Body: Out of ceramic

Metal Parts: Zinc-alloy

Complies with: DIN 72581/2

Ordering Information

Part Number Package Size

156.5611.xxx1 50

Corresponding holder see Section “Fuse Holders.”

*Metal parts in compliance with DIN 72581/2. Fuses with housings not mentioned in the standards.

S

FI = 1.00 (max. operating current : 1.0 x Irat at 23°C)

Fuse Strips with Housing Rated 36V - SPECIAL PURPOSE FUSES

(NOT INTENDED FOR AUTOMOTIVE or TRUCK APPLICATIONS)

Housed fuse strips with window for visual inspection of melting element. Current rating 30A -

150A, 36 VDC. 90° fork type lugs.

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 34

High Current Fuses

Dimensions

Dimensions in mm

Speciﬁcations

Voltage Rating: 48 VDC

Interrupt Ratings: up to 3000A

Operating Temperature Range: - -40° to 125°C

Metal Parts: 35 A - 80 A: Zinc-alloy

100A - 500 A: Copper Cu, gal. Sn

Complies with: DIN 43560-1

Ordering Information

Part Number Package Size

157.5700.xxx1 50

157.5916.xxx1 50

Corresponding holders = 177.5701.0001 and 177.5702.0001.”

Pre-Arcing Time-Limits

FI = 1.00 (max. operating

current:1.0 x Irat at 23°C)

a

S

Time-Current Characteristics

% of Rating

Opening Time Min / Max (s)

35-200 225 - 500

150 3,600 s / – – / –

160 – / – 60 s / –

220 – / 60 s

250 0.8 s / 10 s

400 0.20 / 2 s

Ratings

Part Number Current

Rating

(A)

Typ. Voltage

Drop

(mV)

Breaking Capacity

(VDC/A)

Material

Thickness “S”

(mm)

a = 11 mm a = 9 mm*

157.5700.5351 157.5916.5351 35 125 48/210 0.6

157.5700.5401 – 40 125 48/240 0.6

157.5700.5501 157.5916.5501 50 125 48/300 0.6

157.5700.5631 157.5916.5631 63 125 48/378 0.6

157.5700.5801 157.5916.5801 80 125 48/480 0.6

157.5700.6101 157.5916.6101 100 125 48/600 0.5

157.5700.6121 157.5916.6121 125 125 48/750 0.8

157.5700.6131 157.5916.6131 130 125 48/780 0.8

157.5700.6141 – 135 125 48/810 0.8

157.5700.6151 – 150 125 48/900 0.8

157.5700.6161 157.5916.6161 160 125 48/960 1.0

157.5700.6171 – 175 125 48/1050 1.0

157.5700.6201 157.5916.6201 200 125 48/1200 0.8

157.5700.6231 – 225 125 48/1350 0.5

157.5700.6251 157.5916.6251 250 125 48/1500 0.5

157.5700.6271 – 275 125 48/1650 0.8

157.5700.6301 – 300 125 48/1800 0.8

157.5700.6331 – 325 125 48/1950 0.8

157.5700.6351 – 355 125 48/2130 0.8

157.5700.6401 – 400 125 48/2400 0.8

157.5700.6421 – 425 125 48/2550 1.0

157.5700.6501 – 500 125 48/3000 1.0

Fuse Strips Rated 48V - SPECIAL PURPOSE FUSES

(NOT INTENDED FOR AUTOMOTIVE OR TRUCK APPLICATIONS)

Non-housed fuse strips for battery powered fuses rated at 48VDC. 90º and

straight fork type lugs.

littelfuse.com

35

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

Time-Current Characteristics

% of Rating

Opening Time Min / Max (s)

35-200 225 - 500

150 3,600 s / – – / –

160 – / – 60 s / –

220 – / 60 s

250 0.8 s / 10 s

400 0.20 / 2 s

High Current Fuses

Fuse Strips with Housing Rated 48V - SPECIAL PURPOSE FUSES

(NOT INTENDED FOR AUTOMOTIVE OR TRUCK APPLICATIONS)

Housed fuse strips for battery-powered vehicles. Current rating 35A - 500A, 48 VDC. 90°

and straight fork type lugs. With window for visual inspection of melting element.

Dimensions

Dimensions in mm

Pre-Arcing Time-Limits

FI = 1.00 (max. operating

current: 1.0 x Irat at 23°C)

Speciﬁcations

Voltage Rating: 48 VDC

Interrupt Ratings: up to 3000A

Operating Temperature Range: -40° to 125°C

Metal Parts: 35A - 80A: Zinc-alloy

100A - 500A: Copper Cu, gal. Sn

Complies with: UL 248 Special Purpose Fuses

cULus Recognized: File No. E211637

Ordering Information

Part Number Package Size

157.5701.xxx1 50

157.5917.xxx1 50

Corresponding holder see Section “Fuse Holders.”

Time-Current Characteristics

% of Rating

Opening Time Min / Max (s)

35-200 225 - 500

150 3,600 s / – – / –

160 – / – 60 s / –

220 – / 60 s

250 0.8 s / 10 s

400 0.20 / 2 s

Glass Cover

a

S

Ratings

Part Number Current

Rating

(A)

Typ. Voltage

Drop

(mV)

Breaking

Capacity

(VDC/A)

Material

Thickness “S”

(mm)

a = 11 mm a = 9 mm*

157.5701.5351 157.5917.5351 35 125 48/210 0.6

157.5701.5401 – 40 125 48/240 0.6

157.5701.5501 157.5917.5501 50 125 48/300 0.6

157.5701.5631 157.5917.5631 63 125 48/378 0.6

157.5701.5801 157.5917.5801 80 125 48/480 0.6

157.5701.6101 157.5917.6101 100 125 48/600 0.5

157.5701.6121 157.5917.6121 125 125 48/750 0.8

157.5701.6131 – 130 125 48/780 0.8

157.5701.6141 –135 125 48/810 0.8

157.5701.6151 157.5917.6151 150 125 48/900 0.8

157.5701.6161 157.5917.6161 160 125 48/960 1.0

157.5701.6171 157.5917.6171 175 125 48/1050 1.0

157.5701.6201 157.5917.6201 200 125 48/1200 0.8

157.5701.6231 157.5917.6231 225 125 48/1350 0.5

157.5701.6251 157.5917.6251 250 125 48/1500 0.5

157.5701.6271 157.5917.6281 275 125 48/1650 0.8

157.5701.6301 – 300 125 48/1800 0.8

157.5701.6331 157.5917.6331 325 125 48/1950 0.8

157.5701.6351 157.5917.6351 355 125 48/2130 0.8

157.5701.6401 400 125 48/2400 0.8

157.5701.6421 157.5917.6421 425 125 48/2550 1.0

157.5701.6501 157.5917.6501 500 125 48/3000 1.0

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 36

Dimensions

Dimensions in mm

Speciﬁcations

Voltage Rating: 32 VDC

Interrupt Ratings: 1000A

Operating Temperature Range: -40° to 125°C

Material: Zinc-alloy

Connections: Zinc-alloy

2 x M6 bolts, distance 30 mm

Torque: 4 Nm +/- 1 Nm

Ordering Information

Part Number Package Size

156.5677.xxx1 100

156.5677.xxx2 10000

FI = 1.00 (max. operating current:

1.0 x Irat at 23°C)

S

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

100 ∞ / –

125 360,000 s / –

300 0.100 s / 10 s

600 0.020 s / 1 s

1000 0.010 s / 0.300 s

Ratings

Part Number Current Rating

(A)

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A²s)

Material Thickness “S”

(mm)

156.5677.530_ 30 44 1.33 3800 0.4

156.5677.540_ 40 40 0.89 11200 0.4

156.5677.550_ 50 44 0.72 21300 0.4

156.5677.560_ 60 38 0.58 41400 0.4

156.5677.580_ 80 40 0.43 44800 0.8

156.5677.611_ 110 40 0.31 139000 0.8

156.5677.615_ 150 52 0.23 465000 0.8

156.5677.617_ 175 46 0.22 560000 0.8

Pre-Arcing Time-Limits

High Current Fuses

HSB Fuses Rated 32V

Non-housed fuse strips for rated voltage up to 32 VDC. Current rating 30 A -175 A.

Ring type lugs.

littelfuse.com

37

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

High Current Fuses

Dimensions

Dimensions in mm

Ordering Information

Part Number Package Size

156.5610.xxx1 100

156.5610.xxx2 2000

*Not mentioned in the standards

Corresponding holder see Section “Fuse Holders.”

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

130 3,600 s / –

250 – / 60 s

Pre-arcing Time-limits

FI = 1.00 (max. operating current: 1.0 x Irat at 23°C)

S

Ratings

Part Number Current Rating

(A)

Typ. Voltage Drop

(mV) Material Thickness “S” (mm)

156.5610.525_ 25* 70 0.20

156.5610.530_ 30 70 0.25

156.5610.540_ 40* 70 0.20

156.5610.550_ 50 70 0.25

156.5610.560_ 60* 70 0.40

156.5610.570_ 70* 70 0.45

156.5610.580_ 80 70 0.50

156.5610.610_ 100 70 0.70

156.5610.611_ 120* 70 0.70

156.5610.612_ 125* 70 0.70

156.5610.615_ 150* 70 1.00

156.5610.625_ 250* 70 2.00

Speciﬁcations

Voltage Rating: 36 VDC

Interrupt Ratings up to 625A

Operating Temperature Range: -40° to 125°C

Material: Zinc-alloy

Complies with: DIN 72581/2

Fuse Strips with Rated 36V - SPECIAL PURPOSE FUSES

(NOT INTENDED FOR AUTOMOTIVE OR TRUCK APPLICATIONS)

Non-housed fuse strips for Diesel vehicles. Current rating 25A - 150A, 36 VDC. 90° fork

type lugs.

littelfuse.com 38

BF-Inline Fuses Rated 32V 39

CABLEPRO® Cable Protector Fuses Rated 32V 40

PAL Fuses 41

Cable/PAL Fuses

littelfuse.com

39

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

Cable Fuses

Ordering Information

Part Number Package Size

153.0000 300

Time-Current Characteristics 300A

% of Rating Opening Time Min / Max (s)

75 360,000 s –

165 10 s 100 s

200 1 s 15 s

350 0.3 s 5 s

500 0.1 s 1 s

Time-Current Characteristics 100A-190A

% of Rating Opening Time Min / Max (s)

100 360,000 s –

150 90 s 1800 s

200 3 s 240 s

300 0.3 s 60 s

500 0.1 s 10 s

Ratings

Part Number Current Rating

(A)

Wire Size/Type/

Marking

Typ. Voltage Drop

(mV)

Cold Resistance

(mΩ)

I2t

(A2s)

153.1002 100 10mm²/FLY/P 60 0.42 27,000

153.1012 125 10mm²/FL2G/S 70 0.32 87,500

153.1602 125 16mm²/FLY/P 75 0.41 29,600

153.1612 170 16mm²/FL2G/S 60 0.22 248,000

153.2502 170 25mm²/FLY/P 70 0.29 78,500

153.2512 190 25mm²/FL2G/S 52 0.22 248,000

153.3502 300 35mm²/FLY/P 70 0.20 373.000

0.1

1

10

100

1000

10000

100000

10 100 1000

Time (s)

Current (A)

153.1002(100A)

153.1012(125A)

153.1602(125A)

153.1612(170A)

153.2502(170A)

153.2512(190A)

153.3502(300A)

Time-Current Characteristics Curve

Speciﬁcations

Voltage Rating: 32 VDC

Housing Material: PETGF30

Insulating Housing Matierial: PAGF30

Terminals: Crimp, Copper alloy, tinned

Interrupting Rating: 2000A @32VDC

BF-Inline Fuse Rated 32V

Inline fuse to protect specific cable cross-sections and insulations; Cross-section 10mm²

to 35mm². For rated voltage up to 32 VDC.

Assembly notes: The wire integrated fuse has to be insulated by using a self-adhesive

shrinking tube. The wire has to be fixed on both sides of the fuse to minimize the wire

forces. Recommended shrinking tube: DERAY(R)-IAKT 4:1, 24mm

0.1

1

10

100

1000

10000

100000

10 100 1000

Time (s)

Current (A)

153.1002(100A)

153.1012(125A)

153.1602(125A)

153.1612(170A)

153.2502(170A)

153.2512(190A)

153.3502(300A)

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 40

Cable Fuses

Speciﬁcations

Voltage Rating: 32V

Interrupting rating: 2000A @ 32 VDC

Housing Material: PPAGF33HS

Operating Temperature Range: -40°C to +125°C

Cable Types Available: SAE J1127 SXT, SAE J1128 TXL, ISO 6722: Type FL2G

Operating Temperature Range: -40°C to +150°C - Optional for 150A, 175A and 200A ratings

Cable Type: Thin wall irradiated XLPE (SAE 4GA)

Available with UL recognized in 60, 100, 150 & 200 at 32V

(UL not available with the thin wall irradiated XLPE SAE 4GA cable)

CABLEPRO® Cable Protector Fuses Rated 32V

Available in AWG and metric cables

The CABLEPRO® fuse is designed to replace conventional wire fusible links in high

current automotive applications. The slim package of the CABLEPRO® and the predictable

and reliable performance characteristics (similar to MEGA® fuse) make this far superior

over wire fusible links. Interrupting rating 2000A @ 32 VDC.CablePro is not a sealed

product. To seal it a shrink tube should be used.

littelfuse.com

41

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

PAL Fuses

293 Series

Auto Link PAL 293 Series Fuse

Amps (A): 20, 30, 40, 50, 60, 70, 80, 100

2935 Series

Auto Link PAL 2935 Series Fuse

Amps (A): 25, 30, 45, 65, 75

2938 Series

Auto Link PAL 2938 Series Fuse

Amps (A): 20, 30, 40, 50, 60, 70, 80

294 Series

Auto Link PAL 294 Series Fuse

Amps (A): 30, 40, 50, 60, 70, 80, 100, 120

294C Series

Auto Link PAL 294C Series Fuse

Amps (A): 20, 30, 40, 50, 60, 70, 80, 100, 120

295 Series

Auto Link PAL 295 Series Fuse

Amps (A): 20, 30, 40, 50, 60, 70, 80, 100, 120,

140

283B Series

Auto Link PAL 283B Series Fuse

Amps (A): 20, 30, 40, 50, 60, 70, 80, 100,

120, 140

283 Series

Auto Link PAL 283 Series Fuse

Amps (A): 20, 30, 40, 50, 60, 70, 80, 100,

120, 140

littelfuse.com 42

LC High Voltage Fuse 43

LC High Voltage 50A Fuse 45

High Voltage Fuses

littelfuse.com

43

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

High Voltage Fuses

Time-Current Characteristic Curves

10

100

1000

O

NDS

LC HEV FUSE

10A

15A

20A

30A

40A

0.01

0.1

1

1 10 100 1000

TIME IN SEC

O

CURRENT IN AMPERES

Speciﬁcations

Voltage Rating (10A, 15A, 20A, 30A): 450 VDC

Voltage Rating (40A): 425 VDC

Note: The 0HEV040.ZXBD is rated at 450 VDC

Interrupting Rating (10A, 15A, 20A, 30A): 10kA @ 450 VDC

Interrupting Rating (40A): 10kA @ 425 VDC

Operating Temperature Range: -40ºC to +125ºC

Ordering Information

Part Number Termination Package

Size

0HEVxxx.ZXC Cartridge 240

0HEVxxx.ZXISO Bolt Down (ISO) 240

0HEVxxx.ZXPY Blade 240

0HEVxxx.ZXBD Bolt Down (Axial) 240

0HEVxxx.ZXPCB PCB Mount 240

0HEVxxx.ZXPCBL PCB Mount (Long) 240

Time-Current Characteristics

% of

Rating

Opening Time

Min / Max (s)

10A

Opening Time

Min / Max (s)

15A, 20A, 30A

Opening Time

Min / Max (s)

40A

100 100 hrs / - 100 hrs / - 100 hrs / -

110 4 hrs / - 4 hrs / - -

135 100 / 3600 150 / 3600 150 / 3600

150 10 / 1000 10 / 1000 10 / 1000

200 0.5 / 100 0.5 / 100 0.5 / 100

300 0.1 / 15 0.1 / 15 0.1 / 15

500 0.05 / 1 0.05 / 1 0.05 / 1

Ratings

Part Number

Current

Rating

(A)

Color

Code

Typical Voltage

Drop at 70% IR

(mV)

Maximum Voltage

Drop Spec at 100% IR

(mV)

Typical Cold

Resistance

(mΩ)

Minimum

Melting I²t

(A2s)

0HEV010.xxx 10 114 300 12.8 255

0HEV015.xxx 15 96 200 7.9 133

0HEV020.xxx 20 79 200 5.0 268

0HEV030.xxx 30 67 200 2.7 993

0HEV040.xxx 40 69 200 2.0 1495

(Average Initial Measurements)

Temperature Rerating Curve

0HEV040.ZXBD

Low Current HEV Fuse

The LC HEV fuse is designed for protection of high-voltage accessory circuits in electric

and hybrid electric vehicles.

Low Current HEV Fuses

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 44

High Voltage Fuses

Low Current HEV Fuse

Dimensions

Dimensions in mm

ZXBD Bolt Down (Axial)

ZXPY Blade

ZXISO Bolt Down (ISO)

ZXPCB PCB Mount

ZXC Cartridge

ZXPCBL PCB Mount (Long)

littelfuse.com

45

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

High Voltage Fuses

Speciﬁcations

Voltage Rating (50A): 275 VAC

Interrupting Rating (50A): 10,000A @ 275 VAC

Operating Temperature Range: -40˚C to +125˚C

Low Current High Voltage 50A Fuse

The LC HEV fuse is designed for protection of high-voltage accessory circuits in electric

and hybrid electric vehicles.

Low Current

High Voltage 50A Fuses

Ordering Information

Part Number Termination Package

Size

0HEVxxx.ZXISO2 Bolt Down (ISO) 240

0HEVxxx.ZXP2Y Blade 240

0HEVxxx.ZXPCB2 PCB Mount 240

0HEVxxx.ZXPCBL2 PCB Mount (Long) 240

0HEVxxx.ZXBD2 Bolt Down (Axial) 240

Time-Current Characteristics

% of Rating Opening Time Min / Max (s)

100 100 hrs / -

110 4 hrs / -

135 -

150 -

200 0.5 / 100

300 0.1 / 15

500 0.05 / 1

Ratings

Part

Number

Current

Rating

(A)

Voltage

Rating

(VAC)

Color

Code

Typical Voltage

Drop at 70% IR

(mV)

Maximum Voltage

Drop Spec at 100% IR

(mV)

Typical Cold

Resistance

(mΩ)

Minimum

Melting I²t

(A2s)

0HEV050.XXX 50 275 57 200 1.2 1495

Time-Current Characteristic Curves

10

100

1000

ONDS

275 VAC LC HEV FUSE

50A

Littelfuse, Inc. May 2012

0.01

0.1

1

0001001011

TIME IN SEC

CURRENT IN AMPERES

5040

Temperature Rerating Curve

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 46

High Voltage Fuses

Low Current High Voltage 50A Fuse

Dimensions

Dimensions in mm

ZXBD2 Bolt Down (Axial)

ZXP2Y Blade

ZXISO2 Bolt Down (ISO)

ZXPCB2 PCB Mount ZXPCBL PCB Mount (Long)

littelfuse.com

47

Shunts 48

Fuseholders 49

Specialty Products

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 48

Specialty Products

SHUNTS

Part Number Type

Max Continuous

Load Rating*

(A)

Housing Material Terminal Material Part Quantity

02400094PATO 35 Thermoplastic (UL 94V0) Brass Tin Plated 2000

0297900.WXNV MINI 20 Thermoplastic (UL 94V0) Zinc Silver Plated 3000

0327900.YX2S MICRO2 20 PA66 Zinc Silver Plated 4000

0337900.PX2S MICRO3 15 PA66 Zinc Silver Plated 2000

0495900_ JCASE 50 PA66 Copper Z=2200 pcs/X=1 pc

0695900.PXP MCASE+ Unslotted 30 PPA (33%/35% GF) Copper 2000

0695900.PXPS MCASE+ Slotted 50 PPA (33%/35% GF) Copper 2000

ATO® Shunt MINI® Shunt

JCASE® Shunt

Operating Temp.: -40˚C to +125˚C

Maximum Continuous Load Rating: 35A*

Housing Material: Thermoplastic

(UL 94V0 Rated)

Terminal Material: Brass Tin Plated

Operating Temp.: -40˚C to +125˚C

Maximum Continuous Load Rating: 20A*

Housing Material: Thermoplastic

(UL 94V0 Rated)

Terminal Material: Zinc Silver Plated

Operating Temp.: -40˚C to +125˚C

Maximum Continuous Load Rating: 50A*

Housing Material: PA66

Terminal Material: Copper

Operating Temp.: -40˚C to +125˚C

Maximum Continuous Load Rating: 20A*

Housing Material: PA66

Terminal Material: Ag plated zinc alloy

MICRO2® Shunt

*Rating varies based on mating terminal performance

MCASE+® Shunt

Operating Temp.: -40˚C to +125˚C

Maximum Continuous Load Rating Unslotted: 30A*

Maximum Continuous Load Rating Slotted: 50A*

Housing Material: PPA (33% / 35% GF)

Terminal Material: Copper

Operating Temp.: -40˚C to +125˚C

Maximum Continuous Load Rating: 15A*

Housing Material: PA66

Terminal Material: Ag plated zinc alloy

MICRO3® Shunt

littelfuse.com

49

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

I. Introduction

The purpose of this Fuseology section is to promote a better

understanding of fuses and some of the more common

application details. The fuses to be considered are current-

sensitive devices which are designed as the intentional weak

link in the electrical circuit. The function of a fuse is to provide

discrete component or complete circuit protection by reliably

melting under overcurrent conditions and thus safely

interrupting the flow of current.

II. Types of Overcurrents

An overcurrent is any current which exceeds the ampere

rating of wiring, equipment or devices under conditions of

use. The term “overcurrent” includes both overloads and

short circuits.

A. Overloads

An overload is an overcurrent which is confined to normal

current paths. An overload occurs when the current

exceeds the value for which the wires or equipment are

rated. This can happen when too many devices are

connected to the circuit, or when a device connected to the

circuit malfunctions in a way that causes it to draw higher

than normal current, usually in the range of one to six times

normal current. Sustained overloads eventually overheat

circuit components. Therefore, fuses must open circuits

experiencing sustained overloads before damage occurs.

B. Short Circuits

A short circuit is current out of its normal path. It occurs

when accident or malfunction creates an unintended path

for the electricity to flow from the battery or alternator to

ground. This shorter, more direct path to ground bypasses

the resistance normally offered by the wiring and devices

connected to the circuit. With virtually no resistance left to

impede current flow, the voltage forces higher and higher

current to flow through the wires to the point of the short.

Under such a condition, the current will quickly build to

such a high level that the heat generated can cause

insulation to burn and equipment to be damaged unless

the circuit is opened through the use of a fuse.

III. Fuse Selection Parameters

Since overcurrent protection is crucial to reliable electrical

system operation and safety, fuse selection and application

should be carefully considered. When selecting fuses, the

following parameters should be evaluated:

A. Voltage Rating

The voltage rating, as marked on a fuse, indicates the

maximum voltage of the circuit for which the fuse is

designed to operate safely in the event of an overcurrent.

Therefore, the fuse’s voltage rating must equal or exceed

the available circuit voltage where the fuse will be installed.

System voltage exceeding the fuse’s rated voltage may

result in fuse damage. The voltage rating is 32 volts DC

for the MINI®, MAXI®, ATO®, MIDI®, MEGA®, and

CABLEPRO® Fuses.

B. Interrupting Rating

The interrupting rating (also known as breaking capacity or

short circuit rating) is the maximum current, as stated by

the manufacturer, which the fuse can safely interrupt at

rated voltage. During a fault or short circuit condition, a

fuse may receive an instantaneous current many times

greater than its normal operating current. Safe operation

requires that the fuse remain intact (no body rupture) and

clear the circuit. The interrupting rating is 1000A @ 32 volts

DC for the MINI®, MAXI®, ATO®, JCASE®, and MIDI®

Fuses, and 2000A @ 32 volts DC for the MEGA® and

CABLEPRO® Fuses.

C. Time-Current Characteristics

A fuse’s time-current characteristics determine how fast it

responds to different overcurrents. All fuses have inverse

time-current characteristics, so opening time decreases as

overcurrents increase. Time-current characteristics are

presented graphically on standardized “log-log” paper.

Figure 1 is a sample time-current curve for the MAXI Fuse

series for fuses rated 20-60A. Current values increase

from left to right, and time increases from bottom to top.

The average melting time for any current can be determined

from the curve. For example, from Figure 1 it can be

determined that a 20A MAXI Fuse experiencing an overload

of 100A will open in about 0.5 seconds. At 40A, the same

20A MAXI Fuse would open in about 9 seconds.

Time-current curves are also used to compare fuses of the

same series but of different current ratings. Suppose it

was desired to compare the opening times of 20A and 60A

MAXI Fuses at an overload of 100A. From the curve in

Figure 1, one can see that the 20A fuse opens in about 0.5

seconds at 100 amps, whereas the 60A fuse does not

open until about 50 seconds.

Figure 1: Average Melting-

Current Curve for the MAXI

Fuse Series (20-60A)

Fuseology

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 50

It is important to note that time-current curves give only

average melting times and are presented as a design aid

but are not considered as part of the fuse specifications.

The term used in fuse design that describes how rapidly

a fuse responds to various overcurrents is the fuse’s

“characteristics.” Automotive fuse characteristics are

determined by the fuse’s degree of time delay. Initial or

start-up pulses are normal for many automotive applications

and require fuses to have a time delay designed in to enable

them to survive these pulses and still provide protection

against prolonged overloads. Fuses such as the MINI®

Fuse and ATO® Fuse have a moderate degree of time delay,

whereas fuses like the MAXI® Fuse and MEGA® Fuse have

a high degree of time delay which enables them to handle

high inrush currents like those caused by motor start-ups.

Figure 2 compares sample time-current curves of a 30A

MINI Fuse to a 30A MAXI Fuse. To see that the MAXI Fuse

has more time delay than the MINI Fuse, compare their

opening times at an overload of 100A. Despite the fact that

the fuses are the same rating, the MINI Fuse opens in about

0.1 seconds while the MAXI Fuse opens in about 2.2 seconds.

When selecting a fuse, the start-up pulse should be defined

and then compared to the time-current curve for the fuse.

D. Current Rating

The current rating is the maximum current which the fuse

can continuously carry under specified conditions.

1. Normal Operating Current

The current rating of a fuse is typically derated 25%

for operation at 25˚C to avoid nuisance blowing.

For example, a fuse with a current rating of 10A is not

usually recommended for operation at more than 7.5A

in a 25˚C ambient.

2. Rerating for Ambient Temperature

The current carrying capacity tests of fuses are

performed

at 25˚C & will be affected by changes in ambient

temperature.

At higher ambient temperatures, a fuse will respond

faster to a given overload. Conversely, at lower ambient

temperatures, a fuse will respond slower to a given

overload. In addition, the temperature of the fuse increases

as the normal operating current approaches or exceeds

the rating of the fuse.

A MINI Fuse operating at 25˚C and 110% of rated current

has a minimum life of 100 hours. However, if that same

fuse were operated at a very high ambient temperature,

rerating would be necessary. Figure 3 is a sample

temperature rerating curve for the MINI Fuse. The

following example shows how to use such a curve.

Suppose there is a normal operating current of 15

amperes in a particular circuit, and the ambient

temperature will be 105˚C instead of 25˚C. Which MINI

Fuse rating should be used? From Figure 3, the percent

of rated current to be used at an ambient temperature of

105˚C is 88%, so:

Ideal fuse rating = Normal operating current

Temp rerating factor x 0.75

= 15A

0.88 x 0.75

= 22.73A

Therefore, a 25A or larger MINI Fuse should be used.

E. Transient Overcurrent Considerations

Transient pulses of inrush current are commonplace in

vehicle electrical systems. The transient overcurrent pulses

affect the life of automotive fuses.

1000

100

10

1

0.1

0.01

100001000100101

TIME IN SECONDS

CURRENT IN AMPERES

30A MAXITM FUSE

30A MINITM FUSE

Figure 2: Average Melting-Current Curve Comparing 30A MINI Fuse to 30A

MAXI Fuse

Figure 3: MINI Auto Fuse 297 Series Temperature Rerating Curve

Fuseology

littelfuse.com

51

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

1. I2t

I2t is an expression of the available thermal energy resulting

from current flow. With regard to fuses, the term is usually

expressed as melting, arcing, and total clearing I2t. The units

for I2t are expressed in ampere-squared-seconds [A2s].

Melting I2t: the thermal energy required to melt a specific

fuse element.

Arcing I2t: the thermal energy passed by a fuse during the

arcing time. The magnitude of arcing I2t is a function of the

available voltage and stored energy in the circuit.

Total Clearing I2t: the thermal energy through the fuse from

overcurrent inception until current is completely interrupted.

Total clearing I2t = (melting I2t) + (arcing I2t).

I2t has two important applications to fuse selection. The first

is pulse cycle withstand capability and the second is selective

coordination.

2. Pulse Cycle Withstand Capability

Electrical pulses produce thermal cycling and possible

mechanical fatigue that could affect the life of the fuse.

For this reason, it is important to know the pulse cycle

withstand capability of the fuse, which is defined as the

number of pulses of a given I2t value that can be withstood by

the fuse without opening, assuming that there is sufficient cool

down time between pulses.

Figure 4 shows how I2t of the pulse can be calculated from the

graph of the pulse current as a function of time.

Figure 5 is a graph of the pulse cycle withstand capability of

blade fuses. Because electrical pulse conditions can vary

considerably from one application to another, application testing

is recommended to establish the ability of the fuse design to

withstand the pulse condition.

i = + kt

I

2

t = (1/5)ic

2

t

I2t= ib

2t - 2τib(ic-ib)(e-t/τ-1)-τ/2(ic-ib)2(e-2t/τ-1)

Natural decay to non-zero value

i

b

Figure 4: Evaluating the I²t of a Variety of Current Wave Shapes

33

100000

1000000

10000

1000

100

10

1

0.1 1

NUMBER OF PULSES

RELATIVE I

2

t

3 sigma conﬁdence limit

Actual # of pulses

Figure 5: Pulse Cycle Withstand Capability for Blade Fuses

3. Selective Coordination

In a selectively coordinated system, only the fuse

immediately on the line side of an overcurrent opens.

Upstream fuses remain closed and undamaged. All other

equipment remains in service, which simplifies locating

overloaded equipment or short circuits. In Figure 6, if a

short circuit arises behind fuse #1, fuse #1 should open and

fuse #2 should stay closed and undamaged. The condition

necessary to assure this result is that the minimum melting

I2t of the supply side fuse (fuse #2) must be greater than

the total clearing I2t of the load side fuse (fuse #1). This

condition results in the load side fuse opening before the

supply side fuse begins to melt. Minimum melting and total

clearing I2t data are given in this catalog.

FUSE #2

FUSE

#1

SUPPLY SIDE

LOA

D

SIDE

Figure 6: Selective

Coordination for

Fuses in Series

Fuseology

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for

surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse

product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages

arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless

otherwise agreed by Littelfuse.

littelfuse.com 52

IV. Voltage Drop Across Terminals

A fuse is only as good as the system in which it is used.

One aspect of the electrical system that has considerable

effects on the performance of the fuse is the quality of the

connection between the fuse and the cable it protects.

High voltage drop across the fuse/terminal interface creates

additional thermal loading, which in turn causes shifts in the

time-current characteristics of the fuse. Table 1 below gives

the maximum recommended voltage drop per terminal for

automotive fuses. Figure 7 indicates the measurement

locations used to determine the voltage drop across the

terminal. The voltage drop across the left terminal would be

V2-4 and the voltage drop across the right terminal would be V1-3.

Type

Maximum Recommended Voltage Drop

Per Terminal [MV]

(between points 1-3 or 2-4)

ATO® FUSE 30

MINI® FUSE 30

MAXI® FUSE 30

MEGA® FUSE 15

V. Diffusion

Diffusion Pill Technology is a mixing of molecules, atoms or

crystals in the solid, liquid or gaseous state. Diffusion Pill

Technology is often used in the design of fuses for

automotive, electronic and industrial fuse applications.

“M-effect” is the method of diffusing one metal into another

to form a new alloy with a lower melting point. Littelfuse

uses the “M-effect” to produce three very desirable

characteristics in fuse designs: lower melting temperature,

time delay, and lower voltage drop.

By affixing a diffusion pill tin to the element, the melting

temperature is decreased. This decrease in melting

temperature reduces the fuse rating. In order to reestablish

its original rating the fuse elements’ cross section needs to

increase. An increase in cross section increases the blow

time at higher overload condition. A higher degree of time

delay enables a fuse to withstand higher current inrush

pulses. This increase in cross section reduces the overall

fuse resistance and voltage drop.

VI. Match Wire Gauge to Fuse

In order to protect wiring under all overload and short circuit

conditions, it is necessary to standardize the fuse and wire

selection process.

Fuses have controlled opening characteristics, and each wire

gauge has its respective current carrying capacity. Fuses need to

be selected to always protect the wire insulation from damage.

In the selection of wire gauge at various ambient

temperatures, it is important to consider the worst case or

highest ambient temperature for the application. Wires derate

to a much higher degree than fuses, because wire insulation

temperature capability is affected much more severely.

Maximum Recommended Continuous Current

Wire Size Max Continuous Current (A)

At 25˚C At 80˚C At 105˚C

mm² Gage No. GXL (1) GPT (2) GXL (1) GPT (2) GXL (1)

0.3 15 10 11 4 9

0.5 20 21 15 16 6 13

0.75 27 21 20 7 17

0.8 18 31 22 23 7 19

1 16 33 23 25 9 20

1.5 43 30 33 12 27

2 14 50 36 37 14 32

2.5 60 42 45 15 38

3 12 68 47 51 18 42

4 80 56 61 22 50

5 10 90 65 68 23 58

6 103 73 78 28 64

8 8 125 87 96 30 79

10 146 103 111 40 90

13 6 170 120 129 47 105

19 4 221 156 166 61 137

1

3

2

4

Figure 7: Measurement Locations along the Fuse/Terminal/Cable

System Used to Determaine the Voltage Drop across the Terminal

Table 1: Maximum Recommended Voltage Drop per Terminal

(1) = General purpose cross link polyethylene insulation wire with a

maximum insulation temperature of 155˚C.

(2) = General purpose thermoplastic insulation wire with a maximum

insulation temperature of 90˚C.

Fuseology

To assist you with your design and selection processes,

Littlefuse also offers:

Comprehensive Online Product Specs on Littelfuse.com—

Featuring easy-to-use navigation, search and selection tools, as well as

additional product details. You can rely on Littelfuse.com for instant

answers and continuously up-to-date information.

Printed Product Catalogs—For ofﬂine and off-the-shelf convenience, our

printed product catalogs include data sheets, selection tables and tutorials

covering all of our core technologies. Contact your Littelfuse product

representative or visit www.littelfuse.com/about-us/product-catalogs to

check availability.

Circuit Protection Design Guides—Our application-design center website,

www.littelfuse.com/technical-resources/application-designs offers a wealth

of circuit protection guidance to help you select and apply the best circuit

protection solution for your application.

Speciﬁcations descriptions and illustrative material in this literature are as accurate as known at the time of publication,

but are subject to changes without notice. Visit www.littelfuse.com for most up-to-date technical information.

FORM NO. AA101

Littelfuse is the world leader in circuit protection. We offer an extensive selection of circuit protection technologies for

Automotive applications. Littelfuse circuit protection expert staff can assist you in designing circuit protection for your

most demanding applications. Solutions for over-current applications as well as over-voltage applications are available

from Littelfuse.

Low Current Distribution (LCD) MICRO2, MICRO3, LP MINI, MINI, ATOF, MAXI, MCASE, LP JCASE, JCASE

High Current Distribution (HCD) ZCASE MASTERFUSE, MASTERFUSE, ZCASE MEGA, MIDI, BF1, MEGA, CF

High Voltage Fuses (HEV) OHEV

Battery Cable Protection (BCP) CABLE PRO and BF-Inline products for mounting directly inline as part of a

high-power cable assembly

For more information, please contact your authorized Littelfuse product representative

or visit our website at www.littelfuse.com

As the world's #1 brand in circuit protection Littelfuse offers the broadest

and deepest portfolio of circuit protection products and a global network

of technical support, backed by more than 85 years of application design

expertise. For all of your circuit protection needs visit our Technical Resources

center at www.littelfuse.com/technical-resources

 Application Notes

 Application Testing

 SPICE Models

 Local Technical Support

 Reference Designs

 Product Samples

 Technical Articles

 Certiﬁcation Documents

 Data Sheets