BUSSMANN Effective May 2016 Supersedes July 2013 Technical Data 1018 SERIES Fusetron™ 600V Class RK5 FRS-R — 600 Vac/300 Vdc, 65-600 A, dual element, time-delay fuses Catalog symbol: Features: FRS-R-(amp) • • Provides motor overload, ground fault and short-circuit protection. When used in circuits subject to surge currents such as those caused by motors, transformers and other inductive components, these fuses can be sized close to full-load amps to give maximum overcurrent protection • The time-delay feature makes it possible to use fuse amp ratings which are much smaller than those of non-time delay fuses. Considerable cost saving occurs by permitting the use of smaller size switches, panels and fuses themselves • Provides a good degree of short-circuit protection (greater current-limitation) to help protect downstream components from high fault currents • Gives motor running back-up protection to motors without extra cost • Helps protect motors against burnout from overloads and single-phasing when sized properly • Simplifies and improves blackout prevention (selective coordination ratios) • Dual-element fuses can be applied in circuits subject to temporary motor overloads and surge currents to provide both high-performance, short-circuit and overload protection Description: Advanced protection, energy efficient Class RK5 dual element, current-limiting, time-delay fuses. Time-delay – 10 seconds (minimum) at 500% of rated current. Specifications: Ratings • Volts — 600Vac, 300Vdc • Amps — 65-600A • Interrupting rating • 200 kA Vac RMS Sym • 20 kA Vdc Agency information • UL Listed, Std. 248-12, Class RK5, Guide JDDZ, File E4273 • CSA® Certified, C22.2 No. 248.12, Class 1422-02, File 53787 • CE ® Catalog numbers (amps) FRS-R-65 FRS-R-125 FRS-R-350 FRS-R-70 FRS-R-150 FRS-R-400 FRS-R-75 FRS-R-175 FRS-R-450 FRS-R-80 FRS-R-200 FRS-R-500 FRS-R-90 FRS-R-225 FRS-R-600 FRS-R-100 FRS-R-250 FRS-R-110 FRS-R-300 Carton quantity Dimensions - in: A B Amp ratings A B Amp ratings Carton Qty. 65-100 7.88 1.11 65–100 1 110-200 9.63 1.61 101–200 1 225-400 11.63 2.34 201–400 1 450-600 13.38 2.88 401–600 1 Technical Data 1018 Fusetron™ 600 V Class RK5 FRS-R — 600 Vac/300 Vdc, 65-600 A, dual element, time-delay fuses Effective May 2016 Current-Limitation curves Recommended fuse blocks Fuse amps 1-Pole 2-Pole 3-Pole 400000 70-100 RM60100-1CR RM60100-2CR RM60100-3CR 300000 110-200 RM60200-1CR RM60200-2CR RM60200-3CR 225-400 RM60400-1CR RM60400-2CR RM60400-3CR 450-600 RM60600-1CR RM60600-2CR RM60100-3CR Fuse reducers for class R fuses Equipment fuse clips Desired fuse (case) size Catalog numbers (pairs) 600 V 200 A 100 A NO.2621-R NO.642-R 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. Amp rating 50000 40000 200A 30000 100A 20000 10000 9000 8000 7000 6000 5000 4000 3000 A 2000 Prosp. S.C.C. 10 Time in seconds 1 0.1 RMS symmetrical current in amps Eaton.com/bussmannseries 20,000 10,000 1000 100 0.01 20 Let-through current (apparent RMS symmetrical vs. fuse rating) 100A 200A 400A 600A 5000 3000 4000 5000 5000 10,000 4000 5000 9000 10,000 15,000 4000 6000 10,000 14,000 20,000 5000 7000 11,000 15,000 25,000 5000 7000 12,000 17,000 30,000 5000 8000 13,000 18,000 35,000 5000 8000 13,000 18,000 40,000 6000 9000 14,000 19,000 50,000 6000 9000 14,000 20,000 60,000 6000 10,000 15,000 22,000 70,000 7000 11,000 17,000 23,000 80,000 7000 12,000 17,000 23,000 90,000 7000 12,000 17,000 24,000 100,000 8000 13,000 18,000 25,000 150,000 9000 14,000 21,000 27,000 200,000 9000 16,000 23,000 32,000 200000 60000 70000 80000 90000 100000 50000 30000 40000 20000 4000 Prospective short-circuit current - symmetrical RMS amps Current-limiting effects 100 2 6000 7000 8000 9000 10000 Amp rating 5000 1000 1000 600A 400A 200A 100A 60A 30A 300 15A Time-current curves - average melt 600A 400A 3000 † NO.2641-R 100000 90000 80000 70000 60000 2000 600 A 100 A 200 A Instantaneous peak let-through current in amps 200000 For additional information on the RM600 volt fuse blocks, see data sheet No. 10489. 400 A B Technical Data 1018 Fusetron™ 600 V Class RK5 FRS-R — 600 Vac/300 Vdc, 65-600 A, dual element, time-delay fuses Effective May 2016 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 United States Eaton.com Bussmann Division 114 Old State Road Ellisville, MO 63021 United States Eaton.com/bussmannseries © 2016 Eaton All Rights Reserved Printed in USA Publication No. 1018 – SB13729 / APT May 2016 For Eaton’s Bussmann series product information, call 1-855-287-7626 or visit: Eaton.com/bussmannseries Eaton, Bussmann and Fusetron are valuable trademarks of Eaton in the US and other countries. You 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. Follow us on social media to get the latest product and support information.