Technical Data 1002 Effective August 2018 Supersedes March 2017 LPS-RK -- 600 Vac/300 Vdc, 70-600 A, dual element, time-delay fuses Catalog no.* LPS-RK-70SP LPS-RK-80SP LPS-RK-90SP LPS-RK-100SP LPS-RK-110SP LPS-RK-125SP LPS-RK-150SP LPS-RK-175SP LPS-RK-200SP LPS-RK-225SP LPS-RK-250SP LPS-RK-300SP LPS-RK-350SP LPS-RK-400SP LPS-RK-450SP LPS-RK-500SP LPS-RK-600SP * Open fuse indication available on all part numbers by inserting the suffix "I," e.g., LPS-RK-90SPI. Requires 75Vac minimum voltage. Indicating fuses are not Vdc rated. Carton quantity * 1 Typical applications Catalog symbols: * LPS-RK-(amp)SP (non-indicating) * LPS-RK-(amp)SPI (indicating) Description: Ultimate protection Class RK1 currentlimiting, dual element, time-delay fuses available with optional open fuse indication. * Feeder and branch circuits * Motors * Transformers * Solenoids * General purpose circuits Features and benefits * Industry's only UL Listed and CSA Certified fuse with a 300kA 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. Specifications: Ratings * Volts * 600 Vac * 300 Vdc* * Amps 70-600 A * IR * 300 kA Vac RMS Sym. * 100 kA 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 Technical Data 1002 LPS-RK -- 600 Vac/300 Vdc, 70-600 A, dual element, time-delay fuses Effective August 2018 Current-limitation curves Catalog no. 100 200 400 600 1-Pole RM60100-1CR RM60200-1CR RM60400-1CR RM60600-1CR 2-Pole RM60100-2CR RM60200-2CR RM60400-2CR RM60600-2CR 3-Pole RM60100-3CR RM60200-3CR RM60400-3CR RM60100-3CR For additional information on the RM600 600 volt fuse blocks, see product brochure no. 3192. Fuse reducers for Class R fuses Desired fuse (case) Equipment fuse clips size 200 A 100 A 100 A 400 A 200 A 100 A 600 A 200 A 400 A Catalog no. (pairs) 600V NO.2621-R NO.2641-R NO.642-R NO.2661-R NO.2662-R NO.2664-R INSTANTANEOUS PEAK-LET-THROUGH CURRENT IN AMPS Amps B 400,000 AMP RATING Recommended fuse blocks 100,000 600A 400A 200A 100A 10,000 A Single reducer only (pair not required). For additional information on Class R fuse reducers, see data sheet no. 1118. Current-limiting effects B A 7.88 9.63 11.63 13.38 Eaton.com/bussmannseries B 1.11 1.61 2.36 2.88 Prosp. S.C.C. Let-through current (apparent RMS Sym. vs. fuse rating) -- 100A 200A 400A 600A 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 10,000 15,000 3000 5000 8000 11,000 20,000 3000 5000 9000 12,000 25,000 4000 6000 9000 12,000 30,000 4000 6000 10,000 13,000 35,000 4000 6000 10,000 13,000 40,000 4000 6000 10,000 14,000 50,000 5000 7000 11,000 15,000 60,000 5000 7000 12,000 15,000 70,000 5000 8000 13,000 16,000 80,000 5000 8000 13,000 16,000 90,000 5000 8000 13,000 17,000 100,000 6000 9000 14,000 17,000 150,000 6000 10,000 15,000 19,000 200,000 7000 11,000 16,000 21,000 250,000 7000 12,000 17,000 22,000 300,000 7000 12,000 18,000 23,000 300,000 200,000 RMS SYMMETRICAL CURRENT IN AMPS A-B = ASYMMETRICAL AVAILABLE PEAK (2.3 X SYM RMS AMPS) A 2 100,000 1000 Dimensions -- in Fuse amps 70-100 110-200 225-400 450-600 10,000 1000 LPS-RK -- 600 Vac/300 Vdc, 70-600 A, dual element, time-delay fuses Technical Data 1002 Effective August 2018 Time-current curves - average melt Eaton.com/bussmannseries 3 Technical Data 1002 LPS-RK -- 600 Vac/300 Vdc, 70-600 A, dual element, time-delay fuses Effective August 2018 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 1000 Eaton Boulevard Cleveland, OH 44122 Eaton.com Bussmann Division 114 Old State Road Ellisville, MO 63021 United States Eaton.com/bussmannseries (c) 2018 Eaton All Rights Reserved Printed in USA Publication No. 1002 -- BU-SB13685 August 2018 Eaton.com/bussmannseries Eaton, Bussmann and Low-Peak are valuable trademarks of Eaton in the U.S. and other countries. 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