Littelfuse® LLNRK400 POWR-GARD® LLNRK Current Limiting Time Delay Fuse, 400 A, 250 VAC/125 VDC, 200 kA Interrupt, Class RK1

Power Fuse
295899 MFG #: LLNRK400
95.43000 / ea
RK1 fuses are extremely current-limiting fuses meaning they greatly reduce or eliminate damage to circuits and equipment under short circuit conditions. Replacing existing Class H, K and RK5 fuses with RK1 fuses is one of the easiest ways to immediately improve the protection of plant workers and equipment.
  • Applications
  • Features
All General Purpose Circuits, Motors, Transformers and Safety Upgrades Applications
Extremely current limiting - reduces damage to circuits and equipment under short circuit conditions
Stops damaging short circuits faster than any mechanical protective device
Reduced costs - current limiting design often permits use of readily available, less costly equipment
Low resistance design reduces power consumption and utility bills
Excellent time delay - true dual element construction, with separate non-fatiguing thermally-reversible spring loaded thermal overload element, withstands repeated surges within rated time delay without opening needlessly
Eliminates needless downtime caused by power surges or equipment demands
200 kA at 250 VAC, 20 kA at 125 VDC interrupting rating