Modular Knifeblade Fuse Blocks
Industry’s first
modular fuse block
simplifies design and
enhances safety
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.
Leadership in Circuit Protection.
The only company
that can provide a complete circuit
protection solution for all applications.
Only Eaton can deliver...
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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
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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
Knifeblade Fuse Blocks with IP20 Finger-Safe Covers
Bussmann knifeblade fuse blocks offer advantages you can’t find
anywhere else.
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.
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).
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.
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.
QuikShip Services
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.
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Knifeblade Fuse Block Features & 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
Specifications
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.
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For more information visit www.cooperbussmann.com/KnifebladeFuseBlocks
Knifeblade Fuse Block Feature Highlights
Features
Optional blown fuse
indication speeds
troubleshooting
Lockout/tagout
feature improves
safety
Optional see-
through, snap-on
cover for easy
visual inspection
Vent slots
improve
cooling*
Probe holes for
easy testing without
removing cover
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Finger grips on cover
for easy removal
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Standard phase
barriers for
additional
safety
Multiple
mounting
holes for each
pole provide
flexible,
secure
mounting
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Toolless
interlocking
modular design
for easy
point-of-use
assembly
Finger-safe wire
entry with
cutout tabs for
larger wires
on all versions
600A Version
*No fuse derating necessary.
400A Class J Version
(JM60400-_MW22 with double
box lug for easier wiring with
smaller, dual conductors)
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(double box lug standard for
easier wiring with smaller,
dual conductors)
For more information visit www.cooperbussmann.com/KnifebladeFuseBlocks
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