Increase exibility and
electrical safety with
Bussmann’s snap-together
Class H(K), J, and R
knifeblade fuse blocks.
As the only company with a
complete portfolio of circuit
protection solutions to meet
every application need,
Eaton and Bussmann offer
unmatched leadership in
circuit protection.
More expertise. More
solutions. Expect more.
Industry’s fi rst
modular fuse block
simplifi es design and
enhances safety
Modular Knifeblade Fuse Blocks
Leadership in Circuit Protection.
The only company
The Eaton advantage.
Powering business worldwide
As a global diversified power management company, we
help customers worldwide manage the power needed for
buildings, aircraft, trucks, cars, machinery and businesses.
Eaton’s innovative technologies help customers manage
electrical, hydraulic and mechanical power more reliably,
efficiently, safely and sustainably.
We provide integrated solutions that help make energy,
in all its forms, more practical and accessible.
With 2012 sales of $16.3 billion, Eaton has approximately
103,000 employees around the world and sells products
in more than 175 countries.
Eaton.com
Only Eaton can deliver...
• The most diverse solutions to mitigate arc flash energy to keep people and equipment safe
• The smallest and most cost effective way to meet selective coordination requirements
• The most experienced, time-tested solutions to meet national & local code requirements
• The easiest specifications with the most tested fuse/circuit breaker and circuit breaker/circuit breaker
series rated combinations
• The only one-stop shop to solve your design challenges using our expertise and an unmatched portfolio
that can provide a complete circuit
protection solution for all applications.
Knifeblade Fuse Blocks with IP20 Finger-Safe Covers
Safety
For added safety and convenience, only Bussmann offers optional IP20 finger-safe covers
across the entire knifeblade fuse block product line. Built-in lockout/ tagout feature improves
safety. Blown fuse indication option on fuse cover assists in troubleshooting, while standard
phase barriers between poles enhance safety.
In stock for QuikShip Everyday Service - 90% of orders ship within 24 hours.
QuikShip Emergency Service ensures availability 24/7, 365 with “Next flight out” courier
service.
Modularity
The only snap-together design on the market permits assembly of required poles at point-of-use.
Factory assembled two- and three-pole configurations are also available.
Ease-of-Use
Optional high-clarity, see-through finger-safe covers with test probe holes make routine
maintenance activities easy. No need to open the cover to inspect wire terminations or to take
thermography measurements. Available with any Class H(K), J or R fuse block.
Bussmann knifeblade fuse blocks offer advantages you can’t find
anywhere else.
QuikShip Services
™™
Best Ratings
All fuse blocks meet UL creep and clearance requirements for Industrial Control Circuits (UL 508,
UL 845). 200 to 600A blocks meet the higher UL Industrial Power Distribution Standards
(UL 98, UL 67, UL 489, UL 891, and UL 869A).
Knifeblade Fuse Block Features & Specifications
Specifications
Features and Benefits
• Integral dovetails allow assembly of multiple poles at
point-of-use for greater application flexibility
• Factory assembled two- and three-pole configurations available
• Up to four mounting holes per pole increase installation flexibility
• Standard phase barriers between poles for additional safety
• Design meets UL creep and clearance requirements for Industrial
Power Circuits (UL 508 and UL 845)
• 200 to 600A blocks meet the higher UL creep and clearance
requirements for Power Distribution Standards (UL 98, UL 67, UL 489,
UL 891 and UL 869A)
• Optional IP20 finger-safe covers available on entire knifeblade fuse
block product line:
– High-clarity see-through covers allow for inspecting wire
terminations or thermography measurements without removing cover
– Probe holes included for easy, safer testing and troubleshooting
– Built-in lockout/tagout feature improves safety
• Standard fuse clip reinforcing springs enhance electrical contact
For more information visit www.cooperbussmann.com/KnifebladeFuseBlocks
4
Agency information:
Blocks - UL - Listed cULus E14853 – IZLT & IZLT7
CSA - Certified 47235 – 6225-01
Covers - UL - Listed UL E58836 – JDVS2
Ratings:
Volts - 250V, 600V
Amps - 70-600A
SCCR - 200kA (Class J & R)
10kA (Class H & K)
Flammability ratings:
Blocks - UL 94V0, self-extinguishing
Covers - UL 94HB, self-extinguishing
Operating and storage temperature range:
Blocks - -40ºC to 120ºC
Covers - Non-indicating covers -40ºC to 120ºC
- Indicating covers -20ºC to 90ºC
Materials:
Base - Thermoplastic
Box Lug Terminals - Tin-plated aluminum
Wire:*
Cu/Al – 75ºC/90ºC (100 - 200A)
Cu/Al – 75ºC only (400 - 600A)**
*Higher temperature rated wire can be used with appropriate derating.
**400A Class J double box lug rated for 75ºC/90ºC Cu/Al.
For more information visit www.cooperbussmann.com/KnifebladeFuseBlocks 5
Knifeblade Fuse Block Feature Highlights
Probe holes for
easy testing without
removing cover
Multiple
mounting
holes for each
pole provide
flexible,
secure
mounting
Standard phase
barriers for
additional
safety
Finger-safe wire
entry with
cutout tabs for
larger wires
on all versions
Features
Lockout/tagout
feature improves
safety
Optional blown fuse
indication speeds
troubleshooting
Optional see-
through, snap-on
cover for easy
visual inspection
Toolless
interlocking
modular design
for easy
point-of-use
assembly
600A Version
(double box lug standard for
easier wiring with smaller,
dual conductors)
400A Class J Version
(JM60400-_MW22 with double
box lug for easier wiring with
smaller, dual conductors)
•
•
•
•
•
•
•
••
Finger grips on cover
for easy removal
Vent slots
improve
cooling*
•
*No fuse derating necessary.
Knifeblade Fuse Block Part Number Table - 250 and 600V Class
H(K)
& R
Catalog Number Covers* Fuse Range Number Wire Range Wire Range Torque Bussmann
Class H(K) Class R w/o Indication w/ Indication Volts (amps) of Poles (solid and stranded)*** (fine stranded Cu) N•m (Lb-In) Fuses
HM25100-1CR RM25100-1CR 1 – 1-3 AWG 6.2 (55)
70- 1/0-3 AWG; (2) Cu 4-6 AWG 4-6 AWG 5.6 (50) Class H(K):
HM25100-2CR RM25100-2CR CVR-RH-25100 CVRI-RH-25100 100 2 4-6 AWG; (2) Cu 8 AWG 8 AWG 5.1 (45) NON
HM25100-3CR RM25100-3CR 3
8 AWG; (2) Cu 10-14 AWG – 4.5 (40)
Cu 10-14 AWG; Al 10-12 AWG – 4.0 (35)
HM25200-1CR RM25200-1CR 110- 1 250 MCM-1 AWG 3/0-1 AWG 42 (375) Class R:
HM25200-2CR RM25200-2CR CVR-RH-25200 CVRI-RH-25200 200 2 2-6 AWG; (2) Cu 2-6 AWG 2-6 AWG 31 (275) LPN-RK_SP
HM25200-3CR RM25200-3CR 250 3 LPN-RK_SPI**
HM25400-1CR RM25400-1CR 1 600kcmil 57 (500) FRN-R
HM25400-2CR RM25400-2CR CVR-RH-25400 CVRI-RH-25400 225- 2 500kcmil-4 AWG N/A 51 (450) KTN-R
HM25400-3CR RM25400-3CR
400
3
(2) Cu 3/0 - 4 AWG 57 (500)
(2) Al 3/0 - 4 AWG 34 (300)
HM25600-1CR RM25600-1CR 450- 1
HM25600-2CR RM25600-2CR CVR-RH-25600 CVRI-RH-25600 600 2 (2) 500kcmil-4 AWG N/A 51 (450)
HM25600-3CR RM25600-3CR 3
HM60100-1CR RM60100-1CR 1 –1-3 AWG 6.2 (55)
HM60100-2CR RM60100-2CR CVR-RH-60100 CVRI-RH-60100
70- 2
1/0-3 AWG; (2) Cu 4-6 AWG 4-6 AWG 5.6 (50) Class H(K):
100 4-6 AWG; (2) Cu 8 AWG 8 AWG 5.1 (45) NOS
HM60100-3CR RM60100-3CR 3 8 AWG; (2) Cu 10-14 AWG – 4.5 (40)
Cu 10-14 AWG; Al 10-12 AWG – 4.0 (35)
HM60200-1CR RM60200-1CR 110- 1 250 MCM-1 AWG 3/0-1 AWG 42 (375) Class R:
HM60200-2CR RM60200-2CR CVR-RH-60200 CVRI-RH-60200 200 2 2-6 AWG; (2) Cu 2-6 AWG 2-6 AWG 31 (275) LPS-RK_SP
HM60200-3CR RM60200-3CR 600 3 LPS-RK_SPI**
HM60400-1CR RM60400-1CR 1 600kcmil 57 (500) FRS-R
HM60400-2CR RM60400-2CR CVR-RH-60400 CVRI-RH-60400 225- 2 500kcmil-4 AWG N/A 51 (450) KTS-R
HM60400-3CR RM60400-3CR
400
3
(2) Cu 3/0 - 4 AWG 57 (500) KWS-R
(2) Al 3/0 - 4 AWG 34 (300) PVS-R
HM60600-1CR RM60600-1CR 450- 1
HM60600-2CR RM60600-2CR CVR-RH-60600 CVRI-RH-60600 600 2 (2) 500kcmil-4 AWG N/A 51 (450)
HM60600-3CR RM60600-3CR 3
250V Class H(K) and R 600V Class H(K) and R
*Covers sold serarately. Blown fuse indication requires 90 volts minimum and closed circuit to operate.
**With
easy
ID™ blown fuse indication.
***Ratings for copper and aluminum wire except where otherwise noted.
Knifeblade Fuse Block Part Number Table - Class J
For engineering drawings, go to www.cooperbussmann.com/KnifebladeFuseBlocks 7
Catalog Number Covers* Fuse Range Number Wire Range Wire Range Torque Bussmann
Class J w/o Indication w/ Indication Volts (amps) of Poles (solid and stranded)***
(fine stranded)
N•m (Lb-In) Fuses
JM60100-1CR 1 –1-3 AWG 6.2 (55)
2
1/0-3 AWG; (2) Cu 4-6 AWG 4-6 AWG 5.6 (50)
JM60100-2CR CVR-J-60100 CVRI-J-60100
70-
4-6 AWG; (2) Cu 8 AWG 8 AWG 5.1 (45)
JM60100-3CR
100
8 AWG; (2) Cu 10-14 AWG – 4.5 (40)
3Cu 10-14 AWG; Al 10-12 AWG – 4.0 (35)
JM60200-1CR 110- 1 250 MCM-1 AWG 3/0-1 AWG 42 (375)
JM60200-2CR CVR-J-60200 CVRI-J-60200 200 2 2-6 AWG; (2) Cu 2-6 AWG 2-6 AWG 31 (275) LPJ_SP
JM60200-3CR 3 LPJ_SPI**
JM60400-1CR 600 1 600kcmil 57 (500) JKS
JM60400-2CR 2 500kcmil-4 AWG 51 (450) DFJ
JM60400-3CR 3
(2) Cu 3/0 - 4 AWG 57 (500)
CVR-J-60400-M CVRI-J-60400-M 225-400 (2) Al 3/0 - 4 AWG N/A 34 (300)
JM60400-1MW22† 1 (2) 350kcmil-1 AWG 42 (375)
JM60400-2MW22† 2(2) 2 AWG - 6 AWG 51 (275)
JM60400-3MW22† 3
JM60600-1CR 450- 1
JM60600-2CR CVR-J-60600 CVRI-J-60600 600 2 (2) 500kcmil-4 AWG N/A 51 (450)
JM60600-3CR 3
Class J
*Covers sold serarately. Blown fuse indication requires 90 volts minimum and closed circuit to operate.
**With
easy
ID™ blown fuse indication.
***Ratings for copper and aluminum wire except where otherwise noted.
†400A Class J double box lug rated for 75oC/90oC Cu/Al.
††For Class J 400A double box lug configuration, optional cover provides IP20 finger-safe protection for
dual 350kcmil-1 AWG wires or one single 350kcmil-6 AWG wire.
Double Box Lug Configurations
• Allows for ease of installation with smaller, more flexible wire
• Capable of achieving maximum current rating with parallel
copper or aluminum wires
• Standard on all 600A blocks
• Optional on 400A Class J blocks
• Compatible with IP20 finger-safe covers††
Optional 400A
Class J Version
(JM60400-_MW22)
All 600A Versions
250V Class H(K) and R Dimensional Specifications
For engineering drawings, go to www.cooperbussmann.com/KnifebladeFuseBlocks
8
70-100A
110-200A
225-400A
450-600A
Dimensions - mm (in)
600V Class H(K) & R Dimensional Specifications
For engineering drawings, go to www.cooperbussmann.com/KnifebladeFuseBlocks 9
70-100A
110-200A
225-400A
450-600A
Dimensions - mm (in)
Class J Dimensional Specifications
For more information visit www.cooperbussmann.com/KnifebladeFuseBlocks
10
70-100A
110-200A
1.26
[4.9] 1.26
[4.9]
450-600A
Dimensions - mm (in)
225-400A
Optional Lug Standard Lug
More Bussmann Fuse Blocks, Holders and Accessories
CUBEFuse™
holder
series
Comb-bus bar
accessories
for CH Series
fuse holders
IEC CH
fuse holder
series
Class J
CH fuse holder
series
Class J
JTN 600
fuse holder
series
Optima™
midget &
Class CC
series
UL, IEC & PV
CH modular
fuse holder
series
Open design
Class CC &
midget series
Modular
knifeblade
fuse blocks
with
finger-safe
covers
Open design
ferrule fuse
block series
DIN-Rail
terminal
blocks
Finger-safe,
high SCCR
power
distribution
blocks
Compact
circuit
protector
fused
disconnect
switches
UL Type 1
NEMA 4X
SPDs
For product data sheets, visit www.cooperbussmann.com/DatasheetsEle 11
Customer Assistance
Customer Satisfaction Team
Available to answer questions regarding Bussmann
products & services Monday-Friday, 7:00 a.m. – 6:00 p.m.
Central Time. Contact:
• Toll-free phone: 855-287-7626 (855-BUSSMANN)
• Toll-free fax: 800-544-2570
• E-mail: busscustsat@cooperindustries.com
Emergency and After-Hours Orders
Next flight out or will call shipment for time-critical needs.
Customers pay only standard product price, rush freight
charges, & modest emergency service fee. Place these
orders through the Customer Satisfaction Team during
regular business hours. For after-hours, contact:
• After hours 314-995-1342
C3 – the Enhanced, Online Cooper Customer Center
Provides real time product availability, net pricing, order
status & shipment tracking for: B-Line, Bussmann,
Crouse-Hinds, Lighting, Power Systems & Wiring Devices.
Call 877-995-5955 for log-in assistance. Available at:
• www.cooperc3.com
Application Engineering
Technical assistance is available to all customers.
Application support is available Monday-Friday,
7:00 a.m. – 5:00 p.m. Central Time. Contact:
• Toll-free phone: 855-287-7626 (855-BUSSMANN)
• E-mail: fusetech@cooperindustries.com
Online Resources
Visit www.cooperbussmann.com for the following
resources:
• Product search & cross-reference
• Product & technical materials
• Solutions centers for information on topical issues
including arc flash, selective coordination & short-circuit
current rating
• Technical tools, like our arc flash calculator
• Where to purchase Bussmann product
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.
Eaton
1000 Eaton Boulevard
Cleveland, OH 44122
United States
Eaton.com
© 2013 Eaton
All Rights Reserved
Printed in USA
Publication No. 3192
August 2013
Eaton’s Bussmann Business
PO Box 14460
St. Louis, MO 63178-44602
www.bussmann.com
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