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Manufacturer Littlefuse
Mfg Catalog # LLNRK175
North Coast Part # 1890256



  • All general-purpose circuits
  • Motors
  • Transformers
  • Solenoids
  • Fluorescent lighting
  • All system components with high in-rush currents

Product Features

  • Extremely current limiting — Reduces damage to circuits and equipment under short-circuit conditions. Stops damaging short circuits faster than any mechanical protective device.
  • 300kA Interrupting Rating — Littelfuse self-certified to 300,000 amperes as standard. Meets future trend towards higher available short circuit currents.
  • 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.


  • Ampere Rating (A): 17.5
  • VAC (V): 250
  • VDC (V): 125
  • Interrupting Rating: 20000A@125VDC
  • Opening: Slo-Blo/Time Lag (T)/Time Delay
  • Package Size: Industrial Cartridge


UPC 07945833087
Item Long Description Littelfuse LLNRK and LLSRK series POWR-PRO fuses provide superior overload and short circuit protection for service entrance, main, feeder and general-purpose branch circuits up to 600 amperes. LLNRK/LLSRK series fuses can be installed in existing Class H fuse blocks to upgrade systems containing lower interrupting rating Class H one-time or renewable fuses.
GTiN 00079458330878
Voltage 125 Volt
Type Class RK1
Applications All general purpose circuits
Family Brand Name Littelfuse
Amperage 175 Amp
Sub Brand LLNRK Series
CA Prop65 Warning WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer.

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