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

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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

Littelfuse 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.

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
LLSRK.1000.160030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK.1500.1560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK.2000.260030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK.2500.2560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK.3000.360030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK.4000.460030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK.5000.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK.6000.660030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK.8000.860030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK001160030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK01.41.460030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK01.61.660030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK01.81.860030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK1.121.12560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK1.251.2560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK002260030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK02.52.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK02.82.860030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK2.252.2560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK003360030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK03.23.260030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK03.53.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK004460030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK04.54.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK005560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK05.65.660030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK006660030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK6.256.2560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK007760030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK008860030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK009960030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0101060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0121260030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0151560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK17.517.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0202060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0252560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0303060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0353560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0404060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0454560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0505060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLSRK0606060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
LLSRK0707060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK0757560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK0808060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK0909060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK10010060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK11011060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK12512560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK15015060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK17517560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK20020060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK22522560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK25025060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK30030060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK35035060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK40040060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK45045060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLSRK50050060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
LLSRK60060060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder

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