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

Series: LLNRK
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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 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)Interrupting RatingOpeningStockSamplesCompare
LLNRK.1000.120 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK.1500.1520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK.2000.220 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK.3000.320 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK.4000.420 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK.5000.520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK.6000.620 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK.8000.820 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK001120 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK002220 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK003320 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK004420 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK005520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK006620 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK007720 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK008820 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK009920 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK01.41.420 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK01.61.620 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK01.81.820 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0101020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0121220 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0151520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK02.52.520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK02.82.820 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0202020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0252520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK03.23.220 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK03.53.520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0303020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0353520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK04.54.520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0404020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0454520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK05.65.620 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0505020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0606020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0707020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0808020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK0909020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK1.121.12520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK1.251.2520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK10010020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK11011020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK12512520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK15015020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK17.517.520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK17517520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK2.252.2520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK20020020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK22522520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK25025020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK30030020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK35035020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK40040020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK45045020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK50050020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK6.256.2520 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder
LLNRK60060020 kA @ 125 VdcSlo-Blo/Time Lag (T)/Time DelayCheckOrder

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