LPN-RK EATON | Alldatasheet

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Technical content

LPN-RK — 250 Vac/dc, 70-600 A, dual element, time-delay fuses Catalog symbols:

  • LPN-RK-(amp)SP (non-indicating)
  • LPN-RK-(amp)SPI (indicating) Description: Ultimate protection Class RK1 dual element, current-limiting, time-delay fuses available with optional open fuse indication. Specifications: Ratings
  • Volts 250Vac/dc*
  • Amps 70-600 A
  • IR
  • 300kA Vac RMS Sym.
  • 100kA Vdc * Indicating versions not Vdc rated. Agency information
  • UL Listed, Guide JDDZ, File E4273
  • CSA Certified, Class 1422-02, File 53787 , Class RK1 per CSA C22.2 No. 248.12
  • CE Catalog no.* LPN-RK-70SP LPN-RK-150SP LPN-RK-350SP LPN-RK-80SP LPN-RK-175SP LPN-RK-400SP LPN-RK-90SP LPN-RK-200SP LPN-RK-450SP LPN-RK-100SP LPN-RK-225SP LPN-RK-500SP LPN-RK-110SP LPN-RK-250SP LPN-RK-600SP LPN-RK-125SP LPN-RK-300SP * Open fuse indication available on all part numbers by inserting the suffix “I, ” e.g., LPN-RK-90SPI. Requires 75Vac minimum voltage. Indicating fuses are not Vdc rated. Carton quantity
  • 70–100 A: 5
  • 110–600 A: 1 T ypical applications
  • Feeder and branch circuits
  • Transformers
  • Motors
  • Solenoids
  • General purpose circuits Features and benefits
  • Industry’s only UL Listed and CSA Certified fuse with a 300 kA interrupting rating that allows for simple, worry-free installation in virtually any application.
  • Fast short-circuit protection and dual-element, time-delay performance provide ultimate protection.
  • Reduces existing fuse inventory by up to 33% when upgrading to Low-Peak fuses.
  • Consistent 2:1 ampacity ratios for all Low-Peak fuses make selective coordination easy.
  • Time-delay permits 130% FLA sizing for back-up motor protection.
  • Current-limitation protects downstream components against damaging thermal and magnetic effects of short-circuit currents.
  • Protects against single-phase motor damage.
  • Proper sizing can provide “no damage” Type 2 coordinated protection for NEMA and IEC motor controllers.

LPN-RK — 250 Vac/dc, 70-600 A, dual element, time-delay fuses Eaton.com/bussmannseries Recommended fuse blocks Amps Catalog no. 1-Pole 2-Pole 3-Pole

100 RM25100-1CR RM25100-2CR RM25100-3CR

200 RM25200-1CR RM25200-2CR RM25200-3CR

400 RM25400-1CR RM25400-2CR RM25400-3CR

600 RM25600-1CR RM25600-2CR RM25600-3CR

For additional information on the RM Series of 250 volt fuse blocks, see product brochure # 3192. Fuse Reducers For Class R Fuses Equipment fuse clips Desired fuse (case) size Catalog no. (Pairs) 250V 200 A 100 A NO.2621-R 400 A 100 A NO.2641-R 200 A NO.642-R 600 A 100 A NO.2661-R 200 A NO.2662-R 400 A NO.2664-R† † Single reducer only (pair not required). For additional information on Class R fuse reducers, see data sheet no. 1118. Dimensions — in Amp rating A B 70-100 5.88 1. 10 110-200 7 .13 1 .61 225-400 8.63 2.36 450-600 10.38 2.88 A B

LPN-RK — 250 Vac/dc, 70-600 A, dual element, time-delay fuses Eaton.com/bussmannseries Time-current curves - average melt NOTE: 60 Amp fuse curve is ferrule style and included to show only relative performance. For actual 60 amp time-current curve performance, see data sheet no. 1003. CURRENT IN AMPS TIME IN SECONDS AMP RATING 100 200 400 600

Eaton.com/bussmannseries LPN-RK — 250 Vac/dc, 70-600 A, dual element, time-delay fuses Technical Data 1004 Effective August 2018 Follow us on social media to get the latest product and support information. The only controlled copy of this data sheet is the electronic read-only version located on the Eaton network drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. Eaton, Bussmann and Low-Peak are valuable trademarks of Eaton in the U.S. and other countries. Y ou are not permitted to use the Eaton trademarks without prior written consent of Eaton. CSA is a registered trademark of the Canadian Standards Group. UL is a registered trademark of the Underwriters Laboratories, Inc. Eaton

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Ellisville, MO 63021 United States Eaton.com/bussmannseries © 2018 Eaton All Rights Reserved Printed in USA Publication No. 1004 — BU-SB13687 August 2018 Current-limitation curves Current-limiting effects Prosp. — 100 A 200 A 400 A 600 A 1000 1000 1000 1000 1000 2000 2000 2000 2000 2000 3000 2000 3000 3000 3000 5000 2000 3000 5000 5000 10,000 3000 4000 7000 9000 15,000 3000 5000 8000 11,000 20,000 3000 5000 8000 11,000 25,000 3000 5000 9000 12,000 30,000 4000 6000 9000 12,000 35,000 4000 6000 10,000 13,000 40,000 4000 6000 10,000 13,000 50,000 4000 7000 11,000 14,000 60,000 4000 7000 11,000 16,000 70,000 4000 7000 12,000 16,000 80,000 5000 8000 12,000 16,000 90,000 5000 7000 13,000 17 ,000 100,000 5000 8000 13,000 17 ,000 150,000 6000 9000 15,000 19,000 200,000 6000 11,000 16,000 20,000 250,000 7000 11,000 17 ,000 21,000 300,000 7000 12,000 18,000 22,000 B 600A 400A 200A 100A AMP RATING INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPERES RMS SYMMETRICAL CURRENT IN AMPS A-B = ASYMMETRICAL AVAILABLE PEAK (2.3 X SYM RMS AMPS) 400,000 9000 8000 7000 6000 6000 300,000 200,000 100,000 5000 4000 4000 90,000 3000 2000 1000 3000 80,000 70,000 60,000 50,000 60,000 200,000 20,000 2000 40,000 100,000 10,000 1000 30,000 80,000 40,000 8000 30,000 20,000 10,000 300,000 A