general purpose fuses general purpose fuses 26 w w w . l i t t e l f u s e . c o m ? 2005 littelfuse ? powr-gard ? products catalog KLLU series ul listed, time-delay, class l fu s es are quality fuses, d e ve l oped to provide a som e what lower priced a l te r nate to the powr-pro ? klpc series fuses. KLLU series fuses meet or exceed all ul r e quir e ments for class l fu s es. for superior protection and performance, spe ci f i c a tion-grade powr-pro klpc series fu s es are the re c o m men d ed fuse. co m plete i n fo r m a tion on klpc fu s es may be found in the powr-pro fuse section of this catalog. applications service switches switchboard mains and feeders bolted pressure contact switches motor control center mains large motor branch circuits ul listed series rated protection for molded case circuit breaker panelboards and loadcenters. see panelboard manufacturers literature for recommended fuse rating. safety ? 200,000 a.i.r. provides reliable i n te r ru p tion of all overcurrents up to 200,000 a m peres. ? when used for motor branch circuit pr o te c tion, KLLU fuses may be sized close to the motor full load current, providing excellent protection to branch circuit co n du c tors, motor control equi p ment and motors. longer equipment life ? current-limiting reduces short-circuit damage to systems and equipment. ? reduced downtime. ? ten second minimum time-delay at 500% current eliminates needless downtime caused by heavy starting currents of large motors and other i n du c tive loads. ? selective coordination KLLU fuses c o o r d i nate well with other class l fuses and with all current-limiting littelfuse fuses rated 600 amps or less. this means less time spent trying to locate short- circuits or ove r loa d ed equipment, because only the fuse i m m e d i at e ly on the line side of the a f fec t ed circuit opens. easy to use ? 200,000 a.i.r. rating minimizes need for short-circuit ca l c u l a tions, while meeting present and future system r e quir e ments. ? KLLU fuse time-current characteristics closely match typical time- current curves of circuit breakers. although fuse/circuit breaker systems can seldom be 100% coordinated, KLLU series fuses permit use of a wider range of breaker setting than fast acting class l fuses. e x ce l lent protection for a single breaker or a group of breakers. KLLU class l fuses 600 vac ? time-delay ? 601 C 4000 amperes specifications voltage ratings: ac: 600 volts dc: contact factory interrupting ratings: 200,000 amperes r m s sy mm etrical ampere range: 601 C 4000 a m peres approvals: standard 248-10, class l ul listed (file no: e81895) csa certified (file no: lr29862) ampere ratings 601 750 1000 1400 1800 3000 650 800 1200 1500 2000 3500 700 900 1350 1600 2500 4000 exa m ple part nu m ber (series & a m perage): KLLU 1000
general purpose fuses general purpose fuses 27 w w w . l i t t e l f u s e . c o m ? 2005 littelfuse ? powr-gard ? products catalog KLLU class l fuses 600 vac ? time-delay ? 601 C 4000 amperes b c j f m fig.1 a a b c j d e f n m fig.2 d e f a b c g h n m j fig. 3 n m g d e f a b c h j fig. 4 k l amperes fig. no. dimensions in inches (mm in parentheses) a b c d e f g h j k l m n 601 C 800 1 3 3 ? 4 (95.3) 5 3 ? 4 (146.1) 6 3 ? 4 (171.5) 8 5 ? 8 (219.1) 2 (50.8) 2 1 ? 2 (63.5) 3 ? 8 (9.5) 5 ? 8 x 1 1 ? 8 (15.9) x (28.6) 801 C 1200 2 3 3 ? 4 (95.3) 5 3 ? 4 (146.1) 6 3 ? 4 (171.5) 9 1 ? 4 (235.0) 9 1 ? 2 (241.3) 10 3 ? 4 (273.1) 2 (50.8) 2 1 ? 2 (63.5) 3 ? 8 (9.5) 5 ? 8 x 3 ? 4 (15.9) x (19.1) 5 ? 8 x 1 1 ? 8 (15.9) x (28.6) 1201 C 1600 2 3 3 ? 4 (95.3) 5 3 ? 4 (146.1) 6 3 ? 4 (171.5) 9 1 ? 4 (235.0) 9 1 ? 2 (241.3) 10 3 ? 4 (273.1) 2 3 ? 8 (60.3) 3 (76.2) 7 ? 16 (11.1) 5 ? 8 x 3 ? 4 (15.9) x (19.1) 5 ? 8 x 1 1 ? 8 (15.9) x (28.6) 1601 C 2000 2 3 3 ? 4 (95.3) 5 3 ? 4 (146.1) 6 3 ? 4 (171.5) 9 1 ? 4 (235.0) 9 1 ? 2 (241.3) 10 3 ? 4 (273.1) 2 3 ? 4 (69.9) 3 1 ? 2 (88.9) 1 ? 2 (12.7) 5 ? 8 x 3 ? 4 (15.9) x (19.1) 5 ? 8 x 1 1 ? 8 (15.9) x (28.6) 2001 C 2500 3 4 (101.6) 5 3 ? 4 (146.1) 6 3 ? 4 (171.5) 9 1 ? 4 (235.0) 9 1 ? 2 (241.3) 10 3 ? 4 (273.1) 1 5 ? 8 (41.3) 1 3 ? 4 (44.5) 3 1 ? 2 (88.9) 5 (127.0) 3 ? 4 (19.1) 5 ? 8 x 3 ? 4 (15.9) x (19.1) 5 ? 8 x 1 1 ? 8 (15.9) x (28.6) 2501 C 3000 3 4 (101.6) 5 3 ? 4 (146.1) 6 3 ? 4 (171.5) 9 1 ? 4 (235.0) 9 1 ? 2 (241.3) 10 3 ? 4 (273.1) 1 5 ? 8 (41.3) 1 3 ? 4 (44.5) 4 (101.6) 5 (127.0) 3 ? 4 (19.1) 5 ? 8 x 3 ? 4 (15.9) x (19.1) 5 ? 8 x 1 1 ? 8 (15.9) x (28.6) 3001 C 4000 4 4 (101.6) 5 3 ? 4 (146.1) 6 3 ? 4 (171.5) 9 1 ? 4 (235.0) 9 1 ? 2 (241.3) 10 3 ? 4 (273.1) 1 3 ? 4 (44.5) 3 1 ? 4 (82.6) 4 3 ? 4 (120.7) 5 3 ? 4 (146.1) 3 ? 4 (19.1) 5 ? 8 x 1 3 ? 8 (15.9) x (34.9) 5 ? 8 x 1 3 ? 8 (15.9) x (34.9)
general purpose fuses general purpose fuses 28 w w w . l i t t e l f u s e . c o m ? 2005 littelfuse ? powr-gard ? products catalog KLLU class l fuses 600 vac ? time-delay ? 601 C 4000 amperes 1000 800 600 400 300 200 100 80 60 40 30 20 10 8 6 4 3 2 1 .8 .6 .4 .3 .2 .1 .0 8 .0 6 .0 4 .0 3 .0 2 .0 1 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000 300000 400000 600000 800000 1000000 80 100 200 300 400 600 800 1000 50 601a 800a 1200a 1600a 2000a 3000a 3500a 4000a time in second s current in amperes 565001 symmetrical r.m.s. amperes av ailable f aul t current peak let -thru in amperes 800a 1200a 1600a 2000a 3000a 4000a 10000000 1000000 100000 10000 1000 1000 100 200000 100000 10000 current-limiting effects of KLLU (600v) fuses short-circuit current* apparent rms symmetrical current for various fuse ratings 800a 1200a 1600a 2000a 3000a 4000a 5,000 5,000 5,000 5,000 5,000 5,000 5,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 15,000 11,900 15,000 15,000 15,000 15,000 15,000 20,000 13,000 18,500 20,000 20,000 20,000 20,000 25,000 14,000 20,000 25,000 25,000 25,000 25,000 30,000 14,500 21,000 26,500 30,000 30,000 30,000 35,000 15,000 22,000 28,500 34,000 35,000 35,000 40,000 16,000 23,000 30,000 35,000 37,000 40,000 50,000 17,000 24,000 32,000 38,000 39,000 44,000 60,000 18,000 26,000 34,000 42,000 43,000 50,000 80,000 19,000 28,000 36,000 44,000 46,000 54,500 100,000 21,000 30,000 38,000 46,000 48,000 57,500 150,000 24,000 35,000 44,000 50,000 51,000 68,000 200,000 26,000 38,000 48,000 53,000 60,000 74,000 * prospective rms sy mm etrical a m peres short-circuit current note: data derived from peak let-thru curves
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