FLSR Series - UL Class RK5 Dual-Element Time-Delay Fuses

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Littelfuse FLSR series fuses have been the superior UL Class RK5 dual-element time-delay fuses, and are the most widely used class of fuses. FLSR series fuses provide excellent protection for all types of circuits especially those containing motors. However, users and specifiers should consider the significant benefits offered by Indicator fuses.

Applications:

  • Service entrance switches
  • Transformers
  • Switchboard main and feeder switches
  • Motor control center mains and motor branch circuits
  • Individual fused combination motor controllers
  • Distribution panelboards
  • Industrial control panels
  • Protection of fully-rated panelboards and loadcenters
  • All general purpose circuits

Safety:

  • 200,000 A.I.R.- Reliable interruption of all overcurrents up to 200,000 amperes.
  • Faster acting short circuit protection than any non-current limiting mechanical protective device.

Reliability:

  • Accurate and reliable - Automated, precision manufactured and assembled parts ensure accurate, consistent response to overloads and short circuits.

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VAC (V)VDC (V)Interrupting RatingOpeningSizeStockSamplesCompare
FLSR.1000.160030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR.1500.1560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR.2000.260030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR.2500.2560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR.3000.360030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR.4000.460030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR.5000.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR.6000.660030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR.8000.860030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR001160030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR01.41.460030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR01.51.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR01.61.660030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR01.81.860030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR1.121.12560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR1.251.2560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR002260030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR02.52.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR02.82.860030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR2.252.2560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR003360030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR03.23.260030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR03.53.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR004460030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR04.54.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR005560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR05.65.660030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR006660030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR6.256.2560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR007760030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR07.57.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR008860030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR009960030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0101060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0121260030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0151560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR17.517.560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0202060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0252560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0303060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0353560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0404060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0454560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0505060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0606060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayIndustrial CartridgeCheckOrder
FLSR0707060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR0757560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR0808060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR0909060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR10010060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR11011060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR12512560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR15015060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR17517560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR20020060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR22522560030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR25025060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR30030060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR35035060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR40040060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR45045060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR50050060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder
FLSR60060060030020 kA @ 300 VdcSlo-Blo/Time Lag (T)/Time DelayKnife-BladeCheckOrder

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