ECSR Class RK5 600Vac, 1 to 60A Dual-Element, Time-Delay Fuses Dimensions (inches) Catalog Symbol: ECSR Dual-Element, Time-Delay 10 second (minimum) at 500% rated current Current-Limiting Helps protect motors against burnout from single phasing on three-phase systems. Volts: 600Vac (or less) Simplifies and improves blackout prevention (selective Amps: 1 to 60A coordination). IR: 200kA RMS Sym. Dual-element fuses can be applied in circuits subject to Agency Information: CE, UL Listed, Std. 248-12, temporary motor overloads and surge currents to Class RK5, Guide JDDZ, File E162363 CSA Certified, provide both high-performance, short-circuit and HRCI-R C22.2 No. 248.12, Class 1422-02, File 53787 overload protection. The overload element provides protection against low Features level overcurrent of overloads and will hold an overload Provides motor overload, ground fault and short-circuit which is five times greater than the amp rating of the protection. When used in circuits subject to surge fuse for a minimum of ten seconds. currents such as those caused by motors, transformers and other inductive components, these fuses can be Catalog Numbers (amps) sized close to full load amps to give maximum ECSR1 ECSR7 ECSR17.5 ECSR45 overcurrent protection. ECSR2 ECSR8 ECSR20 ECSR50 Permits the use of smaller and less costly switches. The ECSR3 ECSR9 ECSR25 ECSR60 time-delay feature makes it possible to use fuse amp ratings which are much smaller than those of non ECSR4 ECSR10 ECSR30 time-delay fuses. Considerable cost saving occurs by ECSR5 ECSR12 ECSR35 permitting the use of smaller size switches, panels and ECSR6 ECSR15 ECSR40 fuses themselves. Provides a higher degree of short-circuit protection Carton Quantity and Weight (greater current limitation) in circuits in which surge Carton Weight per Carton currents or temporary overloads occur. Amps Quantity lbs kg Helps protect motors against burnout from overloads. 1-15 10 0.40 0.18 17.5-30 10 0.50 0.28 Gives motor running back-up protection to motors 35-60 10 3.10 1.41 without extra costs. Form No. ESCR 1-60 0109 Page 1 of 2 BU-SB08453 Data Sheet 1317ECSR Class RK5 600Vac, 1 to 60A Dual-Element, Time-Delay Fuses Current Limitation Curves Time-Current Characteristic Curves Average Melt Class R Fuse Blocks (600V) Catalog Data (Clip Retaining Spring Standard, Suffix R) Terminal Type (Suffix No.) Screw Box Lug Basic with with Fuse Reducers For Class R Fuses Catalog Pres. Clip Equipment Desired Fuse Catalog Number Amps Poles Number Plate Cu only Fuse Clips (Case) Size (Pairs) 600V 1 1 R60030-1 SR PR CR 60A 30A No. 663-R to 2 R60030-2 SR PR CR COR 100A 30A No. 216-R 30 3 R60030-3 SR PR CR COR 60A No. 616-R 31 1 R60060-1 CR 200A 60A No. 626-R to 2 R60060-2 CR 60 3 R60060-3 CR The only controlled copy of this document is the electronic read-only version maintained by Cooper Bussmann. 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. Cooper Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann 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. Form No. ESCR 1-60 0109 Page 2 of 2 BU-SB08453 Data Sheet 1317