LLNRK Series - UL Class RK1 Dual Element Time-Delay Fuse

Series: LLNRK
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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.

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

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VAC (V)VDC (V)Interrupting RatingOpeningSizeStockSamplesCompare
LLNRK.1000.125012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK.1500.1525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK.2000.225012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK.3000.325012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK.4000.425012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK.5000.525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK.6000.625012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK.8000.825012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK001125012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK002225012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK003325012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK004425012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK005525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK006625012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK007725012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK008825012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK009925012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK01.41.425012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK01.61.625012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK01.81.825012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0101025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0121225012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0151525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK02.52.525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK02.82.825012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0202025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0252525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK03.23.225012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK03.53.525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0303025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0353525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK04.54.525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0404025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0454525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK05.65.625012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0505025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0606025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK0707025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK0808025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK0909025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK1.121.12525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK1.251.2525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK10010025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK11011025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK12512525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK15015025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK17.517.525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK17517525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK2.252.2525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK20020025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK22522525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK25025025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK30030025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK35035025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK40040025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK45045025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK50050025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLNRK6.256.2525012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLNRK60060025012520000A@125VDCSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder

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