Bussmann(R) Limitron(R) KTU Fast-Acting, Class L Fuses 600 Volt Dimensional Data 601-6000A *All other tolerances (0.02) .88" 1.63" 1.38" 1.75" 1.38" 1.75" .88" .81" 801A to 1200A 1350A to 1600A 1800A to 2000A 8.63" (0.09) 6.75" 10.75" (0.09) 601A to 800A .63" ( 0.03) All Slots and Holes .38" .44" .5" 5.75" .38" 2" 2" 2.5" 2.5" 2.38" 2.75" 3" 3.5" Catalog Symbol: KTU Fast-Acting Current-Limiting Ampere Rating: 601 to 6000 Amperes Voltage Rating: 600 Volts AC (or less) Interrupting Rating: 200,000 RMS Sym. Bolt Mount Agency Approvals: UL Listed, Std. 248-10, Class L, Guide JDDZ, File E4273 CSA Certified, C22.2 No. 248.10, Class 1422-02, File 53787 Ampere Ratings (600 VAC) Catalog Number Ctn. Qty. Weight* Lbs. Catalog Number Kg. KTU-601 KTU-1800 KTU-650 KTU-2000 KTU-700 1 3.75 1.70 KTU-2001 KTU-750 KTU-2500 KTU-800 KTU-3000 KTU-850 KTU-3500 KTU-900 1 4.25 1.927 KTU-4000 KTU-1000 KTU-4500 KTU-1200 KTU-5000 KTU-1350 KTU-6000 KTU-1400 KTU-1500 1 6 2.721 Ctn. Qty. Weight* Lbs. Kg. 1 8.5 3.855 1 17 7.711 1 17.25 7.824 1 24 10.886 1 31 14.061 1 34 15.422 3500A to 4000A 4500A to 5000A 2001A to 2500A 3000A .75" .75" 3.5" 4" 4.75" 5.25" 5.75" 5" 5" 5.75" 6.25" 7.13" .75" 1" 6000A 1" 6.75" 3.75" Terminals: Width (0.06) Thickness (0.03) General Information: * Fast-acting, short-circuit protection. Particularly suited for protection of circuit breakers with lower interrupting ratings and non-inductive loads such as lighting and heating circuits. * 99.9% pure silver-links provide low watt loss and low operating temperature on normal current levels; minmizes total clearing I2t fault energy let-through. * High grade silica-sand filler accelerates response of fuse to short-circuits by having a quenching effect upon the fuse arc. * O-ring seals maximize pressure build-up during currentlimiting actions and ensure filler retention. * Silver-plated micro-peened terminals provide high electrical conductivity, minimize heat generation, and keep fuses and switches cool. * UL interrupting rating of 200,000 amperes. * Selective coordination (blackout prevention). * Glass melamine tube. * Silver-plated end bells. * No fuse reducers available. Fuseblocks (601 - 1200A): Catalog Number Poles 51215 1 51235 3 KTU-1600 601-3000A is rated 340 VDC and 50 KAIC. *Weight per carton. 12-21-98 SB98107 Rev. A 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 314-527-1270 for more information. Form No. KTU Page 1 of 2 BIF Doc #1010 Bussmann(R) Limitron(R) KTU Fast-Acting, Class L Fuses 600 Volt 601-6000A 4000A 5000A 6000A 300 AMPERE RATING 100 AMPERE RATING 100,000 3000A 6000 5000 4000 3000 2500 2000 1600 1200 800 601 800A B 1200A 1350A 1600A 2000A Time-Current Characteristic Curves-Average Melt 400,000 10,000 PROSPECTIVE SHORT-CIRCUIT CURRENT SYMMETRICAL RMS AMPERES 200,000 100,000 1,000 10,000 A TIME IN SECONDS 10 1,000 INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS Current-Limitation Curves 1 100,000 1,000 .01 10,000 .1 CURRENT IN AMPERES 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. 12-21-98 SB98107 Rev. A Form No. KTU Page 2 of 2 BIF Doc #1010