Bussmann® LOW-PEAK® Time-Delay Fuses KRP-C Class L – 600 Volt 601-2000A Dimensional Data All other tolerances (± 0.02) 1350A to 1600A 1800A to 2000A .38" 5.75" 801A to 1200A 8.63" (± 0.09) 6.75" 10.75" (± 0.09) 601A to 800A 0.63" (± 0.03) All Slots and Holes .38" .44" .5" 3.75" Terminal: Width (± 0.06) Thickness (± 0.03) Catalog Symbol: KRP-C-SP Time-Delay – 4 seconds (minimum) at 500% rated current Current-Limiting Ampere Rating: 601 to 2000 Amperes‡ Voltage Rating: 600 Volts AC (or less) 300 Volts DC (or less) Interrupting Rating: 300,000A RMS Sym. (UL) Interrupting Rating: 100,000A DC (UL) Agency Approvals: UL Listed – Special Purpose£, Guide JFHR, File E56412 CSA Certified – (200,000 AIR), Class 1422-02, File 53787 Class L per CSA C22.2, No. 248.10 ‡Use KRP-CL for current ratings below 601 amps. *601-3000A is rated 340 VDC and 50 KAIC. £Meets all performance requirements of UL Standard 248-10 for Class L fuses. Ampere Ratings† Catalog Number KRP-C-601SP KRP-C-650SP KRP-C-700SP KRP-C-750SP KRP-C-800SP KRP-C-801SP KRP-C-900SP KRP-C-1000SP KRP-C-1100SP KRP-C-1200SP Weight** Ctn. Qty. Lbs. Kg. 1 1 3.75 4.5 1.7 2.041 Catalog Number KRP-C-1350SP KRP-C-1400SP KRP-C-1500SP KRP-C-1600SP KRP-C-1800SP KRP-C-1900SP KRP-C-2000SP Ctn. Qty. Weight** Lbs. Kg. 1 6.50 2.948 1 8.5 3.85 2" 2" 2.5" 2.53" Max. 2.5" 2.78" Max. 2.38" 2.75" 3" 3.03" Max. 3.5" 3.53" Max. General Information: • All-purpose silver-linked fuse for both overload and shortcircuit protection for high capacity systems (mains and large feeders). • Time-delay (minimum of four seconds at five times amp rating) for close sizing. • Current-limiting action of the fuse generally affords considerable reduction in bus bracing. • Interrupting rating of 300,000 amperes complies with NEC Sections 110-9 and 230-65 for today’s large capacity systems. • O-ring seals maximize pressure build-up during currentlimiting action and ensure filler retention. • High grade silica-sand filler; accelerates response of fuse to short-circuits by having quenching effect upon the fuse arc. • 99.9% pure silver fuselinks. The high conductivity of silver gives low watt loss and low operating temperature at normal current levels; maximizes total clearing I2t fault energy let-through. • Selective coordination (blackout prevention). • Glass melamine tube. • Silver-plated end bells. CE logo denotes compliance with European Union Low Voltage Directive (50-1000 VAC, 75-1500 VDC). Refer to BIF document #8002 or contact Bussmann Application Engineering at 636-527-1270 for more information. **Weight per carton. †Special purpose rating of 300,000 AIR. 11-12-99 A99119 Rev. A Form No. KRP-C-601-2000 Page 1 of 3 BIF Doc #1008 Bussmann® LOW-PEAK® Time-Delay Fuses KRP-C Class L – 600 Volt 601-2000A Catalog Number Poles 51215 1 51235 3 No reducers available. 1600A 2000A Fuseblocks: (601 - 1200 Amps) 1200A 800A Time-Current Characteristic Curves–Average Melt AMPERE RATING 300 100 TIME IN SECONDS 10 1 200,000 100,000 1,000 .01 10,000 .1 CURRENT IN AMPERES 11-12-99 A99119 Rev. A Form No. KRP-C-601-2000 Page 2 of 3 BIF Doc #1008 Bussmann® LOW-PEAK® Time-Delay Fuses Class L – 600 Volt KRP-C 601-2000A Current-Limitation Curves The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann 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. Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. 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. 11-12-99 A99119 Rev. A Form No. KRP-C-601-2000 Page 3 of 3 BIF Doc #1008