Select your location

Serial Number Verified :
Authenticated:
The product is verified as being authentic; however, this does not guarantee the condition or fit for purpose of the product.

Bussmann series Class J Fuses

Bussmann's UL Class J fuse products extend both our Low-Peak family of products with our LPJ_SP and LPJ_SPI dual-element, time-delay fuses as well as our Limitron line offering fast-acting JKS fuses. The LPJ fuses provide industry leading 300,000 amp interrupting rating at 600Vac RMS Sym and 100kA Vdc while delivering a minimum of 10 seconds of 500% rated current ride-through performance which is ideal for sizing of high inrush loads. The LPJ products are available with optional permanent replace fuse indication. These UL Class J products in sizes 1 to 600 amps provide exceptional performance at 600 Vac and 300 Vdc (see spec sheets for specific details) in a compact size rejecting footprint

Core features

  • Separate overload and short-circuit elements provide time delay for sizing of high inrush loads linked with Class J current limitation
  • Selective coordination ratio of 2:1 (within Low-Peak fuse family) prevents electrical shutdowns from extending beyond the failed circuit
  • Series combination ratings with branch circuit breakers allows broad range of coverage, independent of breaker manufacturer

Benefits of Class J fuses

Class J dual element, current-limiting, time-delay fuses are available with optional open fuse indication on select ratings.

Low-Peak Upgrade Program

Fuseology

An introduction to understanding fuses and how they are applied for providing overcurrent protection.
How to buy from Eaton
Locate a channel partner

Find a Bussmann series product distributor near you.

Technical support

Ask our application engineers about Bussmann Class J fuses.