KLNR6

General Purpose Fuses KLNR/KLSR Class RK1 Fuses 250/600 VAC • Fast Acting • 1 – 600 Amperes Applications Resistance heaters Lighting circuits Non-inductive loads Molded case circuit breaker load centers and panelboards have increased interrupting ratings when series rated with Littelfuse KLNR/KLSR Class RK1 fuses. Refer to panelboard manufacturer’s literature for UL Listed combination of fuses and panelboards. Series ratings up to 200,000 amperes are available. General Purpose Fuses Safety • 200,000 A.I.R. — Reliable interruption of all overcurrents up to 200,000 amperes. • Extremely current-limiting — Stops damaging short-circuit current faster than any mechanical protective device. • Fast-acting — Provides fast acting protection to equipment such as variable speed drives, rectifiers and other equipment containing surge-sensitive components. Longer Equipment Life • Current-limiting design reduces damage to equipment caused by heating and magnetic effects of short-circuit currents. Economical KLNR/KLSR series RK1 fuses were the earliest type of current-limiting fuses developed. Their single-element, silver link design enables them to provide fast-acting overload and short-circuit protection. When used to protect inductive loads such as motors, solenoids, and transformers, KLNR/KLSR series fuses must be greatly oversized to prevent opening the fuses on harmless in-rush currents. In such applications, KLNR/ KLSR series fuses may only provide short-circuit protection. We recommend using POWR-PRO LLNRK/LLSRK series Class RK1, dual-element, time-delay fuses in all new applications requiring the current-limiting ability of UL Class RK1 fuses. POWR-PRO LLNRK/ LLSRK series fuses are also recommended in existing applications where fast-acting RK1 or RK5 fuses have been opening on harmless system surges such as motor starting currents. ® • Extremely current-limiting — often permits use of readily available, less costly equipment. • Used as input or output fuses for surge sensitive components such as variable speed drives and rectifiers, fast acting KLNR/KLSR fuses may prevent opening of expensive semiconductor fuses protecting individual components. Easy To Use • 200,000 A.I.R. rating minimizes need for short-circuit calculations. Dimensions • Refer to FLNR_ID for KLNR dimensions and FLSR_ID for KLSR dimensions. Specifications Voltage Ratings: AC: 250 Volts (KLNR); 600 Volts (KLSR) DC: 125 Volts (1 – 600A KLNR); 250 Volts (1 – 30A KLSR); 300 Volts (35 – 600A KLSR). AC: 200,000 am­peres rm­s sym­m­etrical DC: 20,000 am­peres 1 – 600 am­peres. AC: Standard 248-12, Class RK1 UL Listed (File No: E81895) CSA Certified (File No: LR29862) DC: Littelfuse self-certified Ampere Ratings 1 2 3 4 5 6 8 10 12 15 20 25 30 35 40 45 50 60 70 80 90 100 110 125 150 175 200 225 250 300 350 400 450 500 600 Interrupting Ratings: Ampere Range: Approvals: Exam­ple part num­ber (series & am­perage): KLNR 200 Recommended Fuse Blocks LR250 series (for KLNR series fuses) LR600 series (for KLSR series fuses) Refer to the Blocks & Holders section of this catalog for additional inform­ation. 34 www.littelfuse.com © 2005 Littelfuse • POWR-GARD™ Products Catalog General Purpose Fuses KLNR/KLSR Class RK1 Fuses 250/600 VAC • Fast Acting • 1 – 600 Amperes KLNR 100A 200A 400A 600A 30A 60A 1000 800 600 400 300 200 100 80 60 40 30 20 KLSR 60A 100A 200A 1000 800 600 400 300 200 100 80 60 40 30 20 400A 600A 30A General Purpose Fuses TIME IN SECONDS TIME IN SECONDS 10 8 6 4 3 2 1 .8 .6 .4 .3 .2 .1 .08 .06 .04 .03 .02 .01 60 80 100 200 300 400 20 30 40 10 10 8 6 4 3 2 1 .8 .6 .4 .3 .2 .1 .08 .06 .04 .03 .02 .01 5 10 20 30 40 60 80 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 30000 40000 6000 8000 10000 20000 CURRENT IN AMPERES CURRENT IN AMPERES 549001 KLNR 1000000 800000 600000 400000 300000 200000 100000 80000 60000 40000 30000 548001 KLSR 1000000 800000 600000 400000 300000 200000 100000 80000 60000 40000 30000 600A 400A 200A 100A 60A PEAK LET-THRU IN AMPERES 20000 10000 8000 6000 4000 3000 2000 1000 800 600 400 300 200 100 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000 PEAK LET-THRU IN AMPERES 20000 10000 8000 6000 4000 3000 2000 1000 800 600 400 300 200 100 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000 30A AVAILABLE FAULT CURRENT SYMMETRICAL R. M. S. AMPERES AVAILABLE FAULT CURRENT SYMMETRICAL R. M. S. AMPERES 05548002 © 2005 Littelfuse • POWR-GARD™ Products Catalog www.littelfuse.com 60000 80000 100000 600 800 1000 2000 3000 4000 600A 400A 200A 100A 60A 30A 35