LF SERIES
FUSE BLOCK
TECHNICAL
BROCHURE
Now Available!
Full Line of Fuse Blocks
and Covers
Smaller Footprint
Provides Space Savings
DIN-Rail Mounting
Eases Installation
Indication Improves
Functionality
An Indication of Value
Littelfuse understands the challenge of constantly improving
OEM products —that’s why we developed a brand new line
of next-generation fuse blocks.
The LF Series fuse blocks. Smaller. More efficient. More
valuable to the user. These products meet design and
business objectives, provide value and differentiate OEM
products from the competition.
Competitor’s Class J Blocks
Littelfuse LF Series Class J Blocks
3www.littelfuse.com
©2012 Littelfuse POWR-GARD® Products
POWR-GARD® LF Series Fuse Blocks
LF SERIES CLASS J FUSE BLOCKS
600 V
Specifications
Voltage Ratings: 600 V
Ampere Ratings: 0 – 600 A
Leakage Current: <0.6 mA at 600 V
Flammability Rating: UL94 V-0
Approvals: UL Listed: File No. E14721
CSA Certified: File No. LR7316
Environmental: RoHS Compliant, Lead (Pb) Free
Recommended Fuses
Time Delay
Series: JTD_ID
Series: JTD
Fast Acting
Series: JLS
For information about Touch-Safe Class J fuse holders:
www.littelfuse.com/lpsj
Web Resources
Sample requests, downloadable CAD drawings, fuse block
cover datasheet and other technical information:
www.littelfuse.com/fuseblocks
www.littelfuse.com/lfj
Description
The Littelfuse 600 V Class J blocks offer generous space
savings and enhanced value over previous generations,
such as indication, snap-to-release DIN rail mounting and
universal mounting holes.
Features/Benefits
• Space-saving design—up to 45% smaller
than existing blocks
• Universal mounting holes for easy replacement
• Indication offered on all versions except 200–600 A
• One hand release from DIN rail for ferrule style fuses
• Reinforced fuse clips are standard on all Class J blocks
• Covers available for 100 A and lower to enhance safety
AMP
RATING
POLES
ORDERING NUMBER
TORQUE
TERMINAL
WIRE RANGE WIRE TYPE
BASE
TEMP
RATING
DIN RAIL
MOUNT
INDICATION
COVER
ORDERING
NUMBER*
BASE
PART
NUMBER
SUFFIX
BOX LUG PRES SURE
PLATE SCREW
30
1 LFJ600301 CID PID SID
2.8 N-m (25 in-lbs)
C 6-14 AWG
CU Only
Solid/
Stranded
125˚C • • LFJ60030FBC2 LFJ600302 CID PID SID P 10-14 AWG
3 LFJ600303 CID PID SID S 10-22 AWG
60
1 LFJ600601 CID — — 5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG CU-AL 125˚C • • LFJ60060FBC2 LFJ600602 CID — —
3 LFJ600603 CID — —
100
1
3
LFJ601001
LFJ601003
CID
CID
—
—
—
—
13.6 N-m (120 in-lbs) 2/0-6 AWG
CU-AL 130˚C — • LFJ60100FBC4.5 N-m (40 in-lbs) 8 AWG
4.0 N-m (35 in-lbs) 10-14 AWG
200 1 LFJ602001 C — — 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130˚C — — —
3 LFJ602003 C — —
400 1 LFJ604001 C — — 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130˚C — — —
3 LFJ604003 C — —
600 1 LFJ606001 C — — 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130˚C — — —
3 LFJ606003 C — —
Note: Reinforcing springs standard on all Class J fuse blocks.
*Covers sold individually. One cover needed for each pole.
Ordering Information
(Class J 600 V)
4©2012 Littelfuse POWR-GARD® Products
www.littelfuse.com
POWR-GARD® LF Series Fuse Blocks
Ordering Information (Class H 250 V)
AMP
RATING
POLES
ORDERING NUMBER
TORQUE
TERMINAL
WIRE
RANGE WIRE TYPE
BASE
TEMP
RATING
DIN
RAIL
INDICATION
COVER
ORDERING
NUMBER*
BASE PART
NUMBER
SUFFIX
BOX
LUG
PRES SURE
PLATE SCREW
30
1 LFH250301 C P S
2.8 N-m (25 in-lbs)
C 6-14 AWG
CU Only
Solid/
Stranded
125˚C • — LFH25030FBC2 LFH250302 C P S P 10-14 AWG
3 LFH250303 C P S S 10-22 AWG
60
1 LFH250601 CID — — 5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG CU-AL 125˚C • • LFH25060FBC2 LFH250602 CID — —
3 LFH250603 CID — —
100
1
3
LFH251001
LFH251003
CID
CID
—
—
—
—
13.6 N-m (120 in-lbs) 2/0-6 AWG
CU-AL 130˚C — • LFH25100FBC
4.5 N-m (40 in-lbs) 8 AWG
4.0 N-m (35 in-lbs) 10-14 AWG
200 1 LFH252001 C — — 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130˚C — — —
3 LFH252003 C — —
400 1 LFH254001 C — — 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130˚C — — —
3 LFH254003 C — —
600 1 LFH256001 C — — 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130˚C — — —
3 LFH256003 C — —
LF SERIES CLASS H/K5 AND R FUSE BLOCKS
Description
The Littelfuse Class H/K5 and R blocks offer many benefits
such as indication, snap-to-release DIN rail mounting and
universal mounting holes. Class H and Class R fuse blocks
are dimensionally the same, but Class R blocks incorporate
a rejection feature, which only allows Class R fuses to
be inserted.
Features/Benefits
• Universal mounting holes for easy replacement
• Indication offered on most 250 V and 600 V versions
• One hand release from DIN rail for ferrule style fuses
• Reinforced fuse clips are standard on all Class H and
Class R fuse blocks
• Covers available for 100 A and lower to enhance safety
Specifications
Voltage Rating: 250 V, 600 V
Ampere Ratings: 0 – 600 A
Leakage Current: <0.6 mA at 600 V
Withstand Rating: Class H: 10 kA RMS SYM
Class R: 200 kA RMS SYM
Flammability Rating: UL94 V-0
Approvals: UL Listed (File No. E14721)
CSA Certified (File No. LR7316)
Environmental: RoHS Compliant, Lead (Pb) Free
Recommended Fuses
Note: Reinforcing springs standard on all Class H fuse blocks.
*Covers sold individually. One cover needed for each pole.
Web Resources
Sample requests, downloadable CAD drawings, fuse block
cover datasheet and other technical information:
www.littelfuse.com/fuseblocks
www.littelfuse.com/lfh
www.littelfuse.com/lfr
Class H/K5 Blocks – 250 V
NLN
RLN
Class R Blocks – 250 V
FLNR/FLNR_ID
KLNR
LLNRK
TLN
Class H/K5 Blocks – 600 V
NLS
RLS
Class R Blocks – 600 V
FLSR/FLSR_ID
KLSR
LLSRK/LLSRK_ID
IDSR
5www.littelfuse.com
©2012 Littelfuse POWR-GARD® Products
POWR-GARD® LF Series Fuse Blocks
LF SERIES CLASS H/K5 AND R FUSE BLOCKS
Note: Reinforcing springs standard on all Class H fuse blocks.
Note: Reinforcing springs standard on all Class R fuse blocks.
Note: Reinforcing springs standard on all Class R fuse blocks.
*Covers sold individually. One cover needed for each pole.
Ordering Information (Class H 600 V)
AMP
RATING
POLES
ORDERING NUMBER
TORQUE
TERMINAL
WIRE
RANGE WIRE TYPE
BASE
TEMP
RATING
SNAP
TO
RELEASE
INDICATION
COVER
ORDERING
NUMBER*
BASE
ORDERING
NUMBER
SUFFIX
BOX
LUG
PRES SURE
PLATE SCREW
30
1 LFH600301 CID PID SID
2.8 N-m (25 in-lbs)
C 6-14 AWG
CU Only
Solid/
Stranded
130˚C • •2 LFH600302 CID PID SID P 10-14 AWG LFH60030FBC
3 LFH600303 CID PID SID S 10-22 AWG
60
1 LFH600601 CID — — 5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14AWG CU-AL 130˚C •2 LFH600602 CID — — • LFH60060FBC
3 LFH600603 CID — —
100
1
3
LFH601001
LFH601003
CID
CID
—
—
—
—
13.6 N-m (120 in-lbs) 2/0-6AWG
CU-AL 130˚C — • LFH60100FBC4.5 N-m (40 in-lbs) 8 AWG
4.0 N-m (35 in-lbs) 10-14 AWG
200 1 LFH602001 C — — 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130˚C — — —
3 LFH602003 C — —
400 1 LFH604001 C — — 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130˚C — — —
3 LFH604003 C — —
600 1 LFH606001 C — — 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130˚C — — —
3 LFH606003 C — —
Ordering Information (Class R 250 V)
AMP
RATING
POLES
ORDERING NUMBER
TORQUE
TERMINAL
WIRE
RANGE WIRE TYPE
BASE
TEMP
RATING
SNAP
TO
RELEASE
INDICATION
COVER
ORDERING
NUMBER*
BASE
ORDERING
NUMBER
SUFFIX
BOX
LUG
PRES SURE
PLATE SCREW
30
1 LFR250301 C P S
2.8 N-m (25 in-lbs)
C 6-14 AWG
CU Only
Solid/
Stranded
125˚C2 LFR250302 C P S P 10-14 AWG • — LFH25030FBC
3 LFR250303 C P S S 10-22 AWG
60
1 LFR250601 CID — — 5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG CU-AL 125˚C2 LFR250602 CID — — • • LFH25060FBC
3 LFR250603 CID — —
100
1
3
LFR251001
LFR251003
CID —
—
—
—
13.6 N-m (120 in-lbs) 2/0-6 AWG
CU-AL 130˚C — • LFH25100FBC
CID 4.5 N-m (40 in-lbs) 8 AWG
4.0 N-m (35 in-lbs) 10-14 AWG
200 1 LFR252001 C — — 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130˚C — — —
3 LFR252003 C — —
400 1 LFR254001 C — — 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130˚C — — —
3 LFR254003 C — —
600 1 LFR256001 C — — 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130˚C — — —
3 LFR256003 C — —
Ordering Information (Class R 600 V)
AMP
RATING
POLES
ORDERING NUMBER
TORQUE
TERMINAL
WIRE
RANGE WIRE TYPE
BASE
TEMP
RATING
SNAP
TO
RELEASE
INDICATION
COVER
ORDERING
NUMBER*
BASE
ORDERING
NUMBER
SUFFIX
BOX
LUG
PRES SURE
PLATE SCREW
30
1 LFR600301 CID PID SID
2.8 N-m (25 in-lbs)
C 6-14 AWG
CU Only
Solid/
Stranded
130˚C2 LFR600302 CID PID SID P 10-14 AWG • • LFH60030FBC
3 LFR600303 CID PID SID S 10-22 AWG
60
1 LFR600601 CID — — 5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG CU-AL 130˚C2 LFR600602 CID — — • • LFH60060FBC
3 LFR600603 CID — —
100
1
3
LFR601001
LFR601003
CID
CID
— — 13.6 N-m (120 in-lbs) 2/0-6 AWG
CU-AL 130˚C — • LFH60100FBC— — 4.5 N-m (40 in-lbs) 8 AWG
— — 4.0 N-m (35 in-lbs) 10-14 AWG
200 1 LFR602001 C — — 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130˚C — — —
3 LFR602003 C — —
400 1 LFR604001 C — — 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130˚C — — —
3 LFR604003 C — —
600 1 LFR606001 C — — 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130˚C — — —
3 LFR606003 C — —
6©2012 Littelfuse POWR-GARD® Products
www.littelfuse.com
POWR-GARD® LF Series Fuse Blocks
Ordering Information
(Class T 600 V)
AMP RATING
ORDERING NUMBER
TORQUE WIRE
RANGE
WIRE
TYPE
BASE TEMP
RATING
DIN RAIL
MOUNT
COVER
ORDERING
NUMBER*
BASE
ORDERING
NUMBER
POLES TERMINAL SUFFIX
123BOX LUG PRES SURE
PLATE SCREW
30 LFT60030 1 2 3 C P S 5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
**
see
note
Solid/Stranded
125˚C •
LFT60030FBC
60 LFT60060 1 2 3 C — — 5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
CU-AL
LFT60060FBC
100 LFT60100 1 — 3 CS — —
13.6 N-m (120 in-lbs)
4.5 N-m (40 in-lbs)
4.0 N-m (35 in-lbs)
2/0-6 AWG
8 AWG
10-14 AWG 130˚C —
LT60100FBC
200 LFT60200 1 — 3 CS — — 31.1 N-m (275in-lb) 250 kcmil-6 LT60200FBC
400 LFT60400 1 — 3 CS — — (2) 31.1 N-m (275in-lb) 250 kcmil-6 LT60400FBC
600 LFT60600 1 — 3 CS — — (2) 42.4 N-m (375in-lb) 500 kcmil-6 LT60600FBC
LF SERIES CLASS T FUSE BLOCKS
Specifications
Voltage Ratings: 300 VAC/600 VAC
Ampere Ratings: 0 – 600 A
Leakage Current: <0.6 mA at 600 V
Withstand Rating: 200 kA RMS SYM
Flammability Rating: UL94 V-0
Approvals: UL Listed (File No. E14721)
CSA Certified (File No. LR7316)
Environmental: RoHS Compliant, Lead (Pb) Free
Recommended Fuses
300 V: JLLN 600 V: JLLS
Web Resources
Sample requests, downloadable CAD drawings, fuse block
cover datasheet and other technical information:
www.littelfuse.com/lft
www.littelfuse.com/fuseblocks
Description
The Littelfuse Class T fuse blocks offer many advantages
such as space saving design, universal mounting holes,
snap-to-release DIN rail mounts and available covers.
Features/Benefits
• Space-saving design
• Universal mounting holes for easy replacement
• One hand release from DIN rail for 30–60 A fuses
• Reinforced fuse clips are standard
• Covers available for most amperages to enhance safety
Ordering Information
(Class T 300 V)
AMP RATING
ORDERING NUMBER
TORQUE WIRE
RANGE
WIRE
TYPE
BASE TEMP
RATING
DIN RAIL
MOUNT
COVER
ORDERING
NUMBER*
BASE
ORDERING
NUMBER
POLES TERMINAL SUFFIX
123BOX LUG PRES SURE
PLATE SCREW
30 LFT30030 1 2 3 C — — 5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
CU-AL
Solid/Stranded
125˚C •
LFT30030FBC
60 LFT30060 1 2 3 C — — 5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG LFT30060FBC
100 LFT30100 1 — 3 CS — —
13.6 N-m (120 in-lbs)
4.5 N-m (40 in-lbs)
4.0 N-m (35 in-lbs)
2/0-6 AWG
8 AWG
10-14 AWG
130˚C —
LFT30100FBC
200 LFT30200 1 — 3 CS — — 31.1 N-m (275in-lb) 250 kcmil-6 —
400 LFT30400 1 — 3 CS — — (2) 31.1 N-m (275in-lb) 250 kcmil-6 —
600 LFT30600 1 — 3 CS — — (2) 42.4 N-m (375in-lb) 500 kcmil-6 —
*Covers sold individually. One cover needed for each pole.
**Wire Type for Pressure Plate and Screw Terminal is CU only
7www.littelfuse.com
©2012 Littelfuse POWR-GARD® Products
POWR-GARD® LF Series Fuse Blocks
LF SERIES CLASS G FUSE BLOCKS
Ordering Information (Class G 600 V)
AMP
RATING
POLES
ORDERING NUMBER
WIRE
TYPE
BASE
TEMP
RATING
DIN RAIL
MOUNT
BASE
PART
NUMBER
SUFFIX
BOX
LUG
PRES SURE
PLATE SCREW
15
1 LFG600151 CDINR PQDINR SQDINR
CU Only
Solid/Stranded
•
2 LFG600152 CDINR PQDINR SQDINR 150˚ C •
3 LFG600153 CDINR PQDINR SQDINR •
20
1 LFG600201 CDINR PQDINR SQDINR •
2 LFG600202 CDINR PQDINR SQDINR 150˚ C •
3 LFG600203 CDINR PQDINR SQDINR •
AMP
RATING
TERMINAL INFORMATION
TERMINAL WIRE RANGE TORQUE
15
Box Lug 6-14 AWG 4.0 N-m (35 in-lbs)
Pressure Plate 10-14 AWG 2.3 N-m (20 in-lbs)
Screw 10-14 AWG 2.3 N-m (20 in-lbs)
20
Box Lug 6-14 AWG 4.0 N-m (35 in-lbs)
Pressure Plate 10-14 AWG 2.3 N-m (20 in-lbs)
Screw 10-14 AWG 2.3 N-m (20 in-lbs)
Ordering Information
(Class G 480 V)
AMP
RATING
POLES
ORDERING NUMBER
WIRE
TYPE
BASE
TEMP
RATING
DIN RAIL
MOUNT
BASE
PART
NUMBER
SUFFIX
BOX
LUG
PRES SURE
PLATE SCREW
30
1 LFG480301 CDINR PQDINR SQDINR
CU Only
Solid/Stranded
•
2 LFG480302 CDINR PQDINR SQDINR 150˚ C •
3 LFG480303 CDINR PQDINR SQDINR •
60
1 LFG480601 CDINR — —
CU/Al
•
2 LFG480602 CDINR — — 125˚ C •
3 LFG480603 CDINR — — •
AMP
RATING
TERMINAL INFORMATION
TERMINAL WIRE RANGE TORQUE
30
Box Lug 6-14 AWG 4.0 N-m (35 in-lbs)
Pressure Plate 10-14 AWG 2.3 N-m (20 in-lbs)
Screw 10-14 AWG 2.3 N-m (20 in-lbs)
60 Box Lug
2-4 AWG 5.6 N-m (50 in-lbs)
6-14 AWG 2.8 N-m (25 in-lbs)
Specifications
Voltage Ratings: 600 VAC (0–20 A)
480 VAC (25–60 A)
Ampere Ratings: 0–60 A
Flammability Rating: UL94 V-0
Approvals: UL Listed (File No. E14721)
CSA Certified (File No. LR7091)
Recommended Fuses
Time Delay
Series: SLC
Web Resources
For additional technical information visit:
www.littelfuse.com/fuseblocks
Description
All Littelfuse Class G fuse blocks offer snap-to-release
DIN rail mounting and universal mounting holes. Class
G fuse blocks are designed for use with time-delay
current limiting Class G fuses.
Features/Benefits
• Universal mounting holes for easy replacement
• One hand release from DIN rail for most amperages
• Meet requirements for branch circuit protection
8©2012 Littelfuse POWR-GARD® Products
www.littelfuse.com
POWR-GARD® LF Series Fuse Blocks
Ordering Information (Class CC and Midget 30 A)
AMP
RATING
POLES
CLASS CC ORDERING NUMBER MIDGET ORDERING NUMBER CONNECTOR
TYPE TORQUE WIRE
RANGE WIRE TYPE BASE
TEMP
COVER
ORDERING
NUMBER**
NON-DIN* DINR NON-DIN* DINR
30
1
L60030C1C L60030C1CDINR L60030M1C L60030M1CDINR
Box Lug
5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
CU-AL Solid /
Stranded 125˚C
SPL0012L60030C2C L60030C2CDINR L60030M2C L60030M2CDINR
3L60030C3C L60030C3CDINR L60030M3C L60030M3CDINR
30
1L60030C1PQ L60030C1PQDINR L60030M1PQ L60030M1PQDINR
Pres sure Plate
w/Q.C. Terminal
5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
CU-AL Solid /
Stranded 125˚C
SPL0012L60030C2PQ L60030C2PQDINR L60030M2PQ L60030M2PQDINR
3L60030C3PQ L60030C3PQDINR L60030M3PQ L60030M3PQDINR
30
1L60030C1SQ L60030C1SQDINR L60030M1SQ L60030M1SQDINR
Screw
w/Q.C. Terminal
5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
CU-AL Solid /
Stranded 125˚C
SPL0012L60030C2SQ L60030C2SQDINR L60030M2SQ L60030M2SQDINR
3L60030C3SQ L60030C3SQDINR L60030M3SQ L60030M3SQDINR
LF SERIES CLASS CC/CD AND MIDGET (10X38 mm) FUSE BLOCKS
600 V
Description
The Littelfuse Class CC, CD and midget blocks offer
generous space savings and enhanced value. DIN rail
mounting and universal mounting holes are all available.
Indication feature on all Class CD fuse blocks.
Features/Benefits
• Space-saving design
• Universal mounting holes for easy replacement
• Indication offered on CD blocks
• One hand release from DIN rail optional
• Rejection feature that prevents the insertion of fuses with
lower interrupting rating or voltage ratings
• Clip design reduces resistance and heat
• Non DIN Rail fuse blocks have interlocking feature allowing
ganging to produce a fuse block with any number of poles
• Covers available for all amperages to enhance safety
Ordering Information (Class CD 60 A)
AMP
RATING POLES ORDERING
NUMBER
CONNECTOR
TYPE TORQUE WIRE RANGE WIRE TYPE BASE TEMP
RATING
DIN RAIL
MOUNT INDICATION
COVER
ORDERING
NUMBER**
60
1LFC600601CID
Box Lug 5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
CU-AL Solid /
Stranded 125˚C • •
LFC60060FBC
2LFC600602CID
3LFC600603CID
* Gangable
**Covers sold individually. One cover needed for each pole.
Note: Quick Connect Terminals are rated at 20 A
Specifications
Voltage Rating: 600 VAC/600 VDC
Ampere Ratings: Class CC: 30 A
Class CD: 60 A
Dielectric strength: 1200 V minimum
Clip/terminals: Tin-plated copper alloy
Box lug: Copper
Screw and captive
pressure plate: Zinc-plated steel
Base: Thermoplastic
UL94 V-0 flammability rating
Approvals: Class CC/CD: UL Listed (File No. E14721)
Class CD: CSA Certified (File No. LR73091)
Class CC: CSA Certified (File No. LR7316)
Midget: UL Recognized (File No. E14721)
Environmental: RoHS Compliant, Lead (Pb) Free
Recommended Fuses
Class CC Blocks:
CCMR, KLDR, KLKR
Class CD Blocks:
CCMR
Midget Blocks:
BLF, BLN, BLS, FLA,FLM,FLQ,FLU,KLK,KLKD,KLQ
Web Resources
Sample requests, downloadable CAD drawings, fuse block
cover datasheet and other technical information:
www.littelfuse.com/fuseblocks
9www.littelfuse.com
©2012 Littelfuse POWR-GARD® Products
POWR-GARD® LF Series Fuse Blocks
Description
Littelfuse fuse block covers protect personnel from
accidentally coming into contact with energized parts.
Covers are for use with various UL class fuse blocks.
Please, review the ordering information for available covers.
Ordering Information
Specifications
Connection: Snap to fuse body
Molded Base: Black thermoplastic
Flammability Rating: UL94 V-0
Approvals: UL Listed (File No. E184929)
CSA Certified (File No. 007316_0_000
Class 6225-01)
Features/Benefits
• Added safety to personnel
• Ventilated to avoid fuse derating
• Reusable
• UL listed and CSA certified
• Available for Class H/R, Class J, Class T and Class CD
• Convenient snap-on feature
• Allows visibility of indicator fuse block light
Web Resources
For the most current fuse block information or
sample requests, visit
www.littelfuse.com/fuseblocks
LF SERIES FUSE BLOCK COVERS
UL CLASS FUSE BLOCK BASE
PART NUMBER* VOLTAGE AMPERAGE COVER ORDERING NUMBER
Class H/R LFH25030 / LFR25030 250 30 LFH25030FBC
Class H/R LFH25060 / LFR25030 250 60 LFH25060FBC
Class H/R LFH25100 / LFR25100 250 100 LFH25100FBC
Class H/R LFH60030 / LFR60030 600 30 LFH60030FBC
Class H/R LFH60060 / LFR60060 600 60 LFH60060FBC
Class H/R LFH60100 / LFR60100 600 100 LFH60100FBC
Class J LFJ60030 600 30 LFJ60030FBC
Class J LFJ60060 600 60 LFJ60060FBC
Class J LFJ60100 600 100 LFJ60100FBC
Class T LFT30030 300 30 LFT30030FBC
Class T LFT30060 300 60 LFT30060FBC
Class T LFT30100 300 100 LFT30100FBC
Class T LFT60030 600 30 LFT60030FBC
Class T LFT60060 600 60 LFT60060FBC
Class T LFT60100 600 100 LT60100FBC
Class T LFT60200 600 200 LT60200FBC
Class T LFT60400 600 400 LT60400FBC
Class T LFT60600 600 600 LT60600FBC
Class CD LFC60060 600 60 LFC60060FBC
Class CC L60030C 600 30 SPL001
* Part number shown excludes reference to number of poles and terminal type
10 ©2012 Littelfuse POWR-GARD® Productswww.littelfuse.com
UL
CLASS VOLTAGE AMPERAGE
CASE SIZE
DIN RAIL
MOUNTABLE INDICATION UNIVERSAL
MOUNTING HOLES
SMALLEST
AVAILABLE WIDTH*
COVER
AVAILABLE
H/K5 250 V
600 V
30 √ 600 V only √ 250 V: 2P & 3P
600 V: All √
60 √ √ √ √
100 √ √ 600 V only √
200 √ √
400 √ √
600 √
R250 V
600 V
30 √ 600 V only √ 250 V: 2P & 3P
600 V: All √
60 √ √ √ √
100 √ √ 600 V only √
200 √ √
400 √ √
600 √
J 600 V
30 √ √ √ √ √
60 √ √ √ √
100 √ √ 2P only √
200 √ √
400 √ √
600 √ √
T300 V
600 V
30 √ √ √ √
60 √ √ √ √
100 √ √ √
200 √ √ √
400 √ 1P only √
600 √ √ √
G
480 V
30 √ √ 1P & 2P
60 √ √ 1P & 2P
600 V
15 √ √ 1P & 2P
20 √ √ 1P & 2P
CC 600 V 30 √ √ √
CC†600 V 60 √ √ √ √ √
* Competitive analysis for any fuse block part number including height, width and length is available.
Contact 800-TEC-FUSE for more information
† UL Class CD
POWR-GARD® LF Series Fuse Block Summary
LF SERIES FEATURES
11 www.littelfuse.com ©2012 Littelfuse POWR-GARD® Products
LF Series Functional Schematic
LOAD
OFF
Indicator
OFF
OFF
ON
LF Series Block
LF Series Logic
S1
S1F1
F1
100-600
V
AC/DC
POWR-GARD® LF Series Fuse Block FAQ
The indicator is a neon bulb that lights when the fuse opens. When there
is no power to the panel, you will not see the indicating light. It is the same
functionality of indicating touch-safe blocks. It operates the same electrically as
Touch-Safe Littelfuse fuse holders such as the LPSM and LPSJ. Please see the
functional schematic below for more details.
Leakage current is dependent on the voltage and resistance of the circuit, but
a 600 V circuit will typically be less than 1 mA.
LF Series Functional Schematic
How does the indicator work
on the LF Series fuse blocks?
What is the leakage current
of the indicator?
The fuse element will open first, followed by the blown fuse indicator on the
fuse, followed by the blown fuse indicator on the fuse holder. However, it will
all appear instantaneous to the naked eye due to how quickly these things
will happen. It is important to note that the holder itself doesn’t “open” – the
neon bulb on the holder simply indicates an open circuit.
No. The indicator light only works when power is on, which greatly helps
with troubleshooting. After the circuit is de-energized and locked out, the
blown fuse indicator on the fuse will still show the open fuse. The blown fuse
indicator is also important for fuses that are not in a holder. This redundancy
improves safety.
Which will open first if I
have both an indicating
fuse and fuse block?
Do indicating holders replace
the need for indicating fuses?
80 -600 VAC
At what voltage will the
indicator lamp operate?
Please contact our Tech-Line techline@littelfuse.com or (800) TEC-FUSE
Yes, to File No. E14721.
Please see the datasheets for a complete listing of all certifications.
Do you have any field
data to share?
Is the product UL Listed?
Fuse block reliability testing:
Insertion Extraction Force, Multiple Insertion Testing, Temperature Testing,
Thermal Strength, Mechanical Strength, Short Circuit, Dielectric, Open
Fuse Indication, Rejection, Repeated DIN attachment, Forced DIN removal,
Mounting Torque, DIN rotation and slide
Indication reliability testing:
Thermal Shock, Thermal Cycling, Humidity and Temperature Conditioning,
Multiple Insertions, Contact Cleaner, Indication after Over-torque,
Lens Retention
What reliability tests
were performed on
these new products?
12 ©2012 Littelfuse POWR-GARD® Productswww.littelfuse.com
PART NUMBER
CLASS VOLTAGE AMP # OF
POLES
TERMINAL
TYPE LITTELFUSE PREVIOUS
LITTELFUSE MERSEN BUSSMANN MARATHON LF COVER
NUMBER
H 250 30 1 BOX LUG LFH250301C LH25030-1C 20306 H25030-1CR RF30A1B
LFH25030FBC
H 250 30 2 BOX LUG LFH250302C LH25030-2C 20307 H25030-2CR RF30A2B
H 250 30 3 BOX LUG LFH250303C LH25030-3C 20308 H25030-3CR RF30A3B
H 250 30 1 PRES. PLATE LFH250301P LH25030-1P 20326 H25030-1PR RF30A1SP
H 250 30 2 PRES. PLATE LFH250302P LH25030-2P 20327 H25030-2PR RF30A2SP
H 250 30 3 PRES. PLATE LFH250303P LH25030-3P 20328 H25030-3PR RF30A3SP
H 250 30 1 SCREW LFH250301S LH25030-1S 20316 H25030-1SR RF30A1S
H 250 30 2 SCREW LFH250302S LH25030-2S 20317 H25030-2SR RF30A2S
H 250 30 3 SCREW LFH250303S LH25030-3S 20318 H25030-3SR RF30A3S
H 250 60 1 BOX LUG LFH250601CID LH25060-1C 20606 H25060-1CR RF60A1B
LFH25060FBCH 250 60 2 BOX LUG LFH250602CID LH25060-2C 20607 H25060-2CR RF60A2B
H 250 60 3 BOX LUG LFH250603CID LH25060-3C 20608 H25060-3CR RF60A3B
H 250 100 1 BOX LUG LFH251001CID LH25100-1C 21036 H25100-1CR RF100A1B
LFH25100FBCH 250 100 3 BOX LUG LFH251003CID LH25100-3CD 21038 H25100-3CR RF100A3B
H 250 100 3 BOX LUG LFH251003CID LH25100-3C 21038 H25100-3CR RF100A3B
H 250 200 1 BOX LUG LFH252001C LH25200-1C 22001 H25200-1CR R1200A1BE
—
H 250 200 3 BOX LUG LFH252003C LH25200-3C 22003 H25200-3CR RF200A3BE
H 250 400 1 BOX LUG LFH254001C LH25400-1C 24031 H25400-1CR RF400A1B
—
H 250 400 3 BOX LUG LFH254003C LH25400-3C 24033 H25400-3CR RF400A3B
H 250 600 1 BOX LUG LFH256001C LH25600-1C 2631 H25600-1CR F600A1B
—
H 250 600 3 BOX LUG LFH256003C LH25600-3C 2633 H25600-3CR F600A3B
H 600 30 1 BOX LUG LFH600301CID LH60030-1C 60306 H60030-1CR R6F30A1B
LFH60030FBC
H 600 30 2 BOX LUG LFH600302CID LH60030-2C 60307 H60030-2CR R6F30A2B
H 600 30 3 BOX LUG LFH600303CID LH60030-3C 60308 H60030-3CR R6F30A3B
H 600 30 1 PRES. PLATE LFH600301PID LH60030-1P 60326 H60030-1PR R6F30A1SP
H 600 30 2 PRES. PLATE LFH600302PID LH60030-2P 60327 H60030-2PR R6F30A2SP
H 600 30 3 PRES. PLATE LFH600303PID LH60030-3P 60328 H60030-3PR R6F30A3SP
H 600 30 1 SCREW LFH600301SID LH60030-1S 60316 H60030-1SR R6F60A1S
H 600 30 2 SCREW LFH600302SID LH60030-2S 60317 H60030-2SR R6F30A2S
H 600 30 3 SCREW LFH600303SID LH60030-3S 60318 H60030-3SR R6F30A3S
H 600 60 1 BOX LUG LFH600601CID LH60060-1CD 60606 H60060-1CR R6F60A1B
LFH60060FBCH 600 60 2 BOX LUG LFH600602CID LH60060-2C 60607 H60060-2CR R6F60A2B
H 600 60 3 BOX LUG LFH600603CID LH60060-3C 60608 H60060-3CR R6F60A3B
H 600 100 1 BOX LUG LFH601001CID LH60100-1C 61036 H60100-1CR R6F100A1B
LFH60100FBC
H 600 100 3 BOX LUG LFH601003CID LH60100-3C 61038 H60100-3CR R6F100A3B
H 600 200 1 BOX LUG LFH602001C LH60200-1C 62001 H60200-1CR R6F2001BE
—
H 600 200 3 BOX LUG LFH602003C LH60200-3C 62003 H60200-3CR R6F2003BE
H 600 400 1 BOX LUG LFH604001C LH60400-1C 64031 H60400-1CR R6F400A1B
—
H 600 400 3 BOX LUG LFH604003C LH60400-3C 64033 H60400-3CR R6F400A3B
H 600 600 1 BOX LUG LFH606001C LH60600-1C 6631 H60600-1CR R6F600A1B
—
H 600 600 3 BOX LUG LFH606003C LH60600-3C 6633 H60600-3CR R6F600A3B
LF SERIES CLASS H/K5 FUSE BLOCKS
POWR-GARD® Fuse Block Cross Reference
13 www.littelfuse.com ©2012 Littelfuse POWR-GARD® Products
PART NUMBER
CLASS VOLTAGE AMP # OF
POLES
TERMINAL
TYPE LITTELFUSE PREVIOUS
LITTELFUSE MERSEN BUSSMANN MARATHON LF COVER
NUMBER
R 250 30 1 BOX LUG LFR250301C LR25030-1C 20306R R25030-1CR R30A1B
LFH25030FBC
R 250 30 2 BOX LUG LFR250302C LR25030-2C 20307R R25030-2CR R30A2B
R 250 30 3 BOX LUG LFR250303C LR25030-3C 20308R R25030-3CR R30A3B
R 250 30 1 PRES. PLATE LFR250301P LR25030-1P 20326R R25030-1PR R30A1SP
R 250 30 2 PRES. PLATE LFR250302P LR25030-2P 20327R R25030-2PR R30A2SP
R 250 30 3 PRES. PLATE LFR250303P LR25030-3P 20328R R25030-3PR R30A3SP
R 250 30 1 SCREW LFR250301S LR25030-1S 20316R R25030-1SR R30A1S
R 250 30 2 SCREW LFR250302S LR25030-2S 20317R R25030-2SR R30A2S
R 250 30 3 SCREW LFR250303S LR25030-3S 20318R R25030-3SR R30A3S
R 250 60 1 BOX LUG LFR250601CID LR25060-1C 20606R R25060-1CR R60A1B
LFH25060FBC
R 250 60 2 BOX LUG LFR250602CID LR25060-2C 20607R R25060-2CR R60A2B
R 250 60 3 BOX LUG LFR250603CID LR25060-3C 20608R R25060-3CR R60A3B
R 250 100 1 BOX LUG LFR251001CID LR25100-1C 21036R R25100-1CR R100A1B
LFH25100FBC
R 250 100 3 BOX LUG LFR251003CID LR25100-3C 21038R R25100-3CR R100A3B
R 250 200 1 BOX LUG LFR252001C LR25200-1C 22001R R25200-1CR R200A1BE
—
R 250 200 3 BOX LUG LFR252003C LR25200-3C 22003R R25200-3CR R200A3BE
R 250 400 1 BOX LUG LFR254001C LR25400-1C 24031R R25400-1CR R400A1B
—
R 250 400 3 BOX LUG LFR254003C LR25400-3C 24033R R25400-3CR R400A3B
R 250 600 1 BOX LUG LFR256001C LR25600-1C 2631R R25600-1CR R600A1B
—
R 250 600 3 BOX LUG LFR256003C LR25600-3C 2633R R25600-3CR R600A3B
R 600 30 1 BOX LUG LFR600301CID LR60030-1C 60306R R60030-1CR 6R30A1B
LFH60030FBC
R 600 30 2 BOX LUG LFR600302CID LR60030-2C 60307R R60030-2CR 6R30A2B
R 600 30 3 BOX LUG LFR600303CID LR60030-3C 60308R R60030-3CR 6R30A3B
R 600 30 1 PRES. PLATE LFR600301PID LR60030-1P 60326R R60030-1PR 6R30A1SP
R 600 30 2 PRES. PLATE LFR600302PID LR60030-2P 60327R R60030-2PR 6R30A2SP
R 600 30 3 PRES. PLATE LFR600303PID LR60030-3P 60328R R60030-3PR 6R30A3SP
R 600 30 1 SCREW LFR600301SID LR60030-1S 60316R R60030-1SR 6R30A1S
R 600 30 2 SCREW LFR600302SID LR60030-2S 60317R R60030-2SR 6R30A2S
R 600 30 3 SCREW LFR600303SID LR60030-3S 60318R R60030-3SR 6R30A3S
R 600 60 1 BOX LUG LFR600601CID LR60060-1C 60606R R60060-1CR 6R60A1B
LFH60060FBC
R 600 60 2 BOX LUG LFR600602CID LR60060-2C 60607R R60060-2CR 6R60A2B
R 600 60 3 BOX LUG LFR600603CID LR60060-3C 60608R R60060-3CR 6R60A3B
R 600 100 1 BOX LUG LFR601001CID LR60100-1C 61036R R60100-1CR 6R100A1B
LFH60100FBC
R 600 100 3 BOX LUG LFR601003CID LR60100-3C 61038R R60100-3CR 6R100A3B
R 600 200 1 BOX LUG LFR602001C LR60200-1C 62001R R60200-1CR 6R200A1BE
—
R 600 200 3 BOX LUG LFR602003C LR60200-3C 62003R R60200-3CR 6R200A3BE
R 600 400 1 BOX LUG LFR604001C LR60400-1C 64031R R60400-1CR 6R400A1B
—
R 600 400 3 BOX LUG LFR604003C LR60400-3C 64033R R60400-3CR 6R400A3B
R 600 600 1 BOX LUG LFR606001C LR60600-1C 6631R R60600-1CR 6R600A1B
—
R 600 600 3 BOX LUG LFR606003C LR60600-3C 6633R R60600-3CR 6R600A3B
LF SERIES CLASS R FUSE BLOCKS
POWR-GARD® Fuse Block Cross Reference
14 ©2012 Littelfuse POWR-GARD® Productswww.littelfuse.com
PART NUMBER
CLASS VOLTAGE AMP # OF
POLES
TERMINAL
TYPE LITTELFUSE PREVIOUS
LITTELFUSE MERSEN BUSSMANN MARATHON LF COVER
NUMBER
T 300 30 1 BOX LUG LFT300301C — 30306T — —
LFT30030FBCT 300 30 2 BOX LUG LFT300302C LT30030-2CR 30307T T30030-2CR RT30A2B
T 300 30 3 BOX LUG LFT300303C LT30030-3CR 30308T T30030-3CR RT30A3B
T 300 60 1 BOX LUG LFT300601C — 30616T — —
LFT30060FBCT 300 60 2 BOX LUG LFT300602C LT30060-2CR 30607T T30060-2CR RT60A2B
T 300 60 3 BOX LUG LFT300603C LT30060-3CR 30608T T30060-3CR RT60A3B
T 300 100 1 BOX LUG LFT301001CS LT30100-1C 31031T T30100-1CR T100A1B
LFT30100FBC
T 300 100 3 BOX LUG LFT301003CS LT30100-3C 31033T T30100-3CR T100A3B
T 300 200 1 BOX LUG LFT302001CS LT30200-1C 32031T T30200-1C T200A1B
—
T 300 200 3 BOX LUG LFT302003CS — 32033T T30200-3C T200A3B
T 300 400 1 BOX LUG LFT304001CS LT30400-1C 34031T T30400-1C T400A1B
—
T 300 400 3 BOX LUG LFT304003CS — 34033T — —
T 300 600 1 BOX LUG LFT306001CS LT30600-1C 36031T T30600-1C T600A1B
—
T 300 600 3 BOX LUG LFT306003CS — — — —
PART NUMBER
CLASS VOLTAGE AMP # OF
POLES
TERMINAL
TYPE LITTELFUSE PREVIOUS
LITTELFUSE MERSEN BUSSMANN MARATHON LF COVER
NUMBER
J 600 30 1 BOX LUG LFJ600301CID LJ60030-1C 60306J J60030-1CR R6J30A1B
LFJ60030FBC
J 600 30 2 BOX LUG LFJ600302CID LJ60030-2C 60307J J60030-2CR R6J30A2B
J 600 30 3 BOX LUG LFJ600303CID LJ60030-3C 60308J J60030-3CR R6J30A3B
J 600 30 1 PRES. PLATE LFJ600301PID LJ60030-1P 60325J J60030-1P R6J30A1SP
J 600 30 2 PRES. PLATE LFJ600302PID LJ60030-2P 60326J J60030-2P R6J30A2SP
J 600 30 3 PRES. PLATE LFJ600303PID LJ60030-3P 60327J J60030-3P R6J30A3SP
J 600 30 1 SCREW LFJ600301SID LJ60030-1S 60316J J60030-1S R6J30A1S
J 600 30 2 SCREW LFJ600302SID LJ60030-2S 60317J J60030-2S R6J30A2S
J 600 30 3 SCREW LFJ600303SID LJ60030-3S 60318J J60030-3S R6J30A3S
J 600 60 1 BOX LUG LFJ600601CID LJ60060-1C 60606J J60060-1CR R6J60A1B
LFJ60060FBCJ 600 60 2 BOX LUG LFJ600602CID LJ60060-2C 60607J J60060-2CR R6J60A2B
J 600 60 3 BOX LUG LFJ600603CID LJ60060-3C 60608J J60060-3CR R6J60A3B
J 600 100 1 BOX LUG LFJ601001CID LJ60100-1C 61036J J60100-1CR R6J100A1B
LFJ60100FBC
J 600 100 3 BOX LUG LFJ601003CID LJ60100-3C 61038J J60100-3CR R6J100A3B
J 600 200 1 BOX LUG LFJ602001C LJ60200-1C 62001J J60200-1CR 6J200A1BFBD
—
J 600 200 3 BOX LUG LFJ602003C LJ60200-3C 62003J J60200-3CR 6J200A3BFBD
J 600 400 1 BOX LUG LFJ604001C LJ60400-1C 64031J J60400-1CR 6J400A1BFBD
—
J 600 400 3 BOX LUG LFJ604003C LJ60400-3C 64033J J60400-3CR 6J400A3BFBD
J 600 600 1 BOX LUG LFJ606001C LJ60600-1C 6631J J60600-1CR 6J600A1BFBD
—
J 600 600 3 BOX LUG LFJ606003C LJ60600-3C 6633J J60600-3CR 6J600A3BFBD
LF SERIES CLASS J FUSE BLOCKS
LF SERIES CLASS T FUSE BLOCKS
POWR-GARD® Fuse Block Cross Reference
15 www.littelfuse.com ©2012 Littelfuse POWR-GARD® Products
PART NUMBER
CLASS VOLTAGE AMP # OF
POLES
TERMINAL
TYPE LITTELFUSE PREVIOUS
LITTELFUSE MERSEN BUSSMANN MARATHON LF COVER
NUMBER
T 600 30 1 BOX LUG LFT600301C LT60030-1CR 60306T T60030-1CR —
LFT60030FBC
T 600 30 2 BOX LUG LFT600302C LT60030-2CR 60307T T60030-2CR R6T30A2B
T 600 30 3 BOX LUG LFT600303C LT60030-3CR 60308T T60030-3CR R6T30A3B
T 600 30 1 SCREW LFT600301S LT60030-1SR 60316T T60030-1SR —
T 600 30 2 SCREW LFT600302S LT60030-2SR 60317T T60030-2SR R6T30A2S
T 600 30 3 SCREW LFT600303S LT60030-3SR 60318T T60030-3SR R6T30A3S
T 600 30 1 PRES. PLATE LFT600301P — — — —
T 600 30 2 PRES. PLATE LFT600302P — — — —
T 600 30 3 PRES. PLATE LFT600303P — — — —
T 600 60 1 BOX LUG LFT600601C LT60060-1CR 60606T T60060-1CR —
T 600 60 2 BOX LUG LFT600602C LT60060-2CR 60607T T60060-2CR R6T60A2B
LFT60060FBC
T 600 60 3 BOX LUG LFT600603C LT60060-3CR 60608T T60060-3CR R6T60A3B
T 600 100 1 BOX LUG LFT601001CS LT60100-1C 61031T T60100-1C 6T100A1B
LT60100FBC
T 600 100 3 BOX LUG LFT601003CS LT60100-3C 61033T T60100-3C 6T100A3B
T 600 200 1 BOX LUG LFT602001CS LT60200-1C 62031T T60200-1C 6T200A1B
LT60200FBC
T 600 200 3 BOX LUG LFT602003CS — 62033T 1B0089 6T200A3B
T 600 400 1 BOX LUG LFT604001CS LT60400-1C 64031T T60400-1C 6T400A1B
LT60400FBC
T 600 400 3 BOX LUG LFT604003CS — — — —
T 600 600 1 BOX LUG LFT606001CS — 66031T T60600-1C 6T600A1B
LT60600FBC
T 600 600 3 BOX LUG LFT606003CS — — — —
PART NUMBER
CLASS VOLTAGE AMP # OF
POLES
TERMINAL
TYPE LITTELFUSE PREVIOUS
LITTELFUSE MERSEN BUSSMANN MARATHON
G 600 15 1 BOX LUG LFG600151CDINR — — BG3011B G15A1B
G 600 15 2 BOX LUG LFG600152CDINR — — BG3012B G15A2B
G 600 15 3 BOX LUG LFG600153CDINR — — BG3013B G15A3B
G 600 15 1 PRES. PLATE LFG600151PQDINR — 40121G BG3011PQ G15A1SPQ
G 600 15 2 PRES. PLATE LFG600152PQDINR — 40122G BG3012PQ G15A2SPQ
G 600 15 3 PRES. PLATE LFG600153PQDINR — 40123G BG3013PQ G15A3SPQ
G 600 15 1 SCREW LFG600151SQDINR LG30015-1SQ 40111G BG3011SQ G15A1SQ
G 600 15 2 SCREW LFG600152SQDINR LG30015-2SQ 40112G BG3012SQ G15A2SQ
G 600 15 3 SCREW LFG600153SQDINR LG30015-3SQ 40113G BG3013SQ G15A3SQ
G 600 20 1 BOX LUG LFG600201CDINR — — BG3021B G20A1B
G 600 20 2 BOX LUG LFG600202CDINR — — BG3022B G20A2B
G 600 20 3 BOX LUG LFG600203CDINR — — BG3023B G20A3B
G 600 20 1 PRES. PLATE LFG600201PQDINR — 40221G BG3021PQ G20A1SPQ
G 600 20 2 PRES. PLATE LFG600202PQDINR — 40222G BG3022PQ G20A2SPQ
G 600 20 2 PRES. PLATE LFG600203PQDINR — 40223G BG3023PQ G20A3SPQ
LF SERIES CLASS T FUSE BLOCKS
LF SERIES CLASS G FUSE BLOCKS
POWR-GARD® Fuse Block Cross Reference
PART NUMBER
CLASS VOLTAGE AMP # OF
POLES
TERMINAL
TYPE LITTELFUSE PREVIOUS
LITTELFUSE MERSEN BUSSMANN MARATHON
G 600 20 1 SCREW LFG600201SQDINR LG30020-1SQ 40211G BG3021SQ G20A1SQ
G 600 20 2 SCREW LFG600202SQDINR LG30020-2SQ 40212G BG3022SQ G20A2SQ
G 600 20 3 SCREW LFG600203SQDINR LG30020-3SQ 40213G BG3023SQ G20A3SQ
G 480 30 1 BOX LUG LFG480301CDINR — 40351G BG3031B G30A1B
G 480 30 2 BOX LUG LFG480302CDINR — 40352G BG3032B G30A2B
G 480 30 3 BOX LUG LFG480303CDINR — 40353G BG3033B G30A3B
G 480 30 1 PRES. PLATE LFG480301PQDINR L30030G-1PQ 40321G BG301P G30A1SPQ
G 480 30 2 PRES. PLATE LFG480302PQDINR L30030G-2PQ 40322G BG302P G30A2SPQ
G 480 30 3 PRES. PLATE LFG480303PQDINR L30030G-3PQ 40323G BG303P G30A3SPQ
G 480 30 1 SCREW LFG480301SQDINR L30030G-1SQ 40311G BG301S G30A1SQ
G 480 30 2 SCREW LFG480302SQDINR L30030G-2SQ 40312G BG302S G30A2SQ
G 480 30 3 SCREW LFG480303SQDINR L30030G-3SQ 40313G BG303S G30A3SQ
G 480 60 1 BOX LUG LFG480601CDINR LG30060-1CR 40606G G30060-1CR —
G 480 60 2 BOX LUG LFG480602CDINR LG30060-2CR 40607G G30060-2CR —
G 480 60 3 BOX LUG LFG480603CDINR LG30060-3CR 40608G G30060-3CR —
PART NUMBER
CLASS VOLTAGE AMP # OF
POLES
TERMINAL
TYPE LITTELFUSE PREVIOUS
LITTELFUSE MERSEN BUSSMANN MARATHON LF COVER
NUMBER
CD 600 60 1 BOX LUG LFC600601CID L60060C-1C — — R6CC60A1B
LFC60060FBCCD 600 60 2 BOX LUG LFC600602CID L60060C-2C — — R6CC60A2B
CD 600 60 3 BOX LUG LFC600603CID L60060C-3C — — R6CC60A3B
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 the most up-to-date technical information.
©April 2012 Littelfuse, Inc.
FORM NO. PF402
Revision C
Additional Resources
• Printed product catalogs and brochures
• (800) TEC-FUSE technical support hotline
Technical Information Online
• Datasheets and detailed specifications
• 2-D .dxf and 3-D .igs drawing files
• Comparison chart and cross reference
• Space-savings calculator
• Environmental approvals
• Outline drawings
Sample Requests
• Order easily online
• Call your Littelfuse sales representative
www.littelfuse.com/fuseblocks (800) TEC-FUSE
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LF SERIES CLASS G FUSE BLOCKS
POWR-GARD® Fuse Block Cross Reference
LF SERIES CLASS CD FUSE BLOCKS
