general purpose fuses general purpose fuses 41 w w w . l i t t e l f u s e . c o m ? 2005 littelfuse ? powr-gard ? products catalog jlln/jlls powr-t ? class t fuses 300/600 vac ? fast-acting ? 1 C 1200 amperes specifications voltage ratings: ac: 300 volts (jlln); 600 volts (jlls) dc: 125 volts (jlln 1 C 30a) 160 volts (jlln 35 C 60a) 125 volts (jlln 110 C 1200a) 300 volts (jlls) interrupting ratings: ac: 200,000 a m peres r m s sy mm etrical dc: 20,000 a m peres (jlln 110 C 1200a) (jlls 1 C 1200a) ampere range: 1C 1200 a m peres approvals: ac: standard 248-15, class t ul listed (file no: e81895): jlln/jlls (1 C 800a) ul recognized (file no: e71611): jlls (900 C 1200a) csa certified (file no: lr29862): jlln/jlls (1 C 600a) dc: ul listed (file no: e81895): jlln (110 C 1200a) littelfuse self-certified: jlln 1-60a jlls (1 C 1200a) ampere ratings 1 30 90 250 800 2 35 100 300 900* 3 40 110 350 1000 6 45 125 400 1100 10 50 150 450 1200 15 60 175 500 20 70 200 600 25 80 225 700 * jlls only exa m ple part nu m ber (series & a m perage): jlls 100 recommended fuse blocks lt300 series (for jlln series fuses) lt600 series (for jlls series fuses) lscr002 (for jlln/jlls 700-1200a fuses) refer to the blocks and holders section of this catalog for additional i n fo rma tion. space saving powr-t fuses are the most compact fuses available in ratings above 30 amperes less than one-third the size of comparable class r fuses. when rated in a c co r dance with the nec ? , powr-t fuses provide fast acting overload and short-circuit protection for non-inductive circuits and equipment. used in inductive circuits, the ampere rating of powr-t fuses must be increased to prevent opening on in-rush currents. in such instances, powr-t fuses may provide only short-circuit protection. applications littelfuse class t fuses can be used in applications that require fast- acting protection, such as equipment containing variable speed drives, rectifiers, and other surge-sensitive components. main switches containing class t fuses may be used to provide protection to individual electric services and meter stacks. molded case circuit breaker load centers and panelboards also will have increased interrupting ratings when series rated with class t fuses. features/benefits space-saving C switch enclosures, fuse pullouts, and other equipment using class t fuses are usually more compact. typical three-pole class t fuse blocks require less than 50% of the panel space required by similar class r blocks. longer equipment life and increased safety C class t fuses provide fast, reliable protection against overcurrents up to 200,000 amperes. extremely current-limiting design minimizes the damaging heating and magnetic effects caused by short-circuit currents. optional mounting types C in addition to the class t dimensions, littelfuse offers select ratings with pc board mounting tabs for specialty applications. pc board mount versions are ul recognized. contact the factory for more information. note: jlln class t 300 volt fuses are ul listed for circuits not exceeding 300 volts to ground. however, since ul does not include testing 300 volt class t fuses on 277/480 volt three-phase bolted faults, littelfuse does not re c o m mend using 300 volt class t fuses where phase-to-phase voltage exceeds 300 volts.
general purpose fuses general purpose fuses 42 w w w . l i t t e l f u s e . c o m ? 2005 littelfuse ? powr-gard ? products catalog jlln/jlls powr-t ? class t fuses 300/600 vac ? fast acting ? 1 C 1200 amperes b c a f d f e a b c d g a c d fig. 1 fig. 2 fig. 3 amperes refer to fig. no. series dimensions in inches (mm in parentheses) a b c d e f g 1 C 30 1 jlln 7 ? 8 (22.2) 9 ? 32 (7.1) 13 ? 32 (10.3) jlls 1 1 ? 2 (38.1) 9 ? 32 (7.1) 9 ? 16 (14.3) 35 C 60 1 jlln 7 ? 8 (22.2) 9 ? 32 (7.1) 9 ? 16 (14.3) 2 jlls 1 9 ? 16 (39.7) 13 ? 16 (20.6) 13 ? 32 (10.3) 1 (25.4) 1 ? 16 (1.6) 1 3 ? 32 (27.8) 70 C 100 3 jlln 2 5 ? 32 (54.8) 1 9 ? 16 (39.7) 3 ? 4 (19.1) 13 ? 16 (20.6) 27 ? 32 (21.4) 9 ? 32 (7.1) 1 ? 8 (3.2) jlls 2 61 ? 64 (75.0) 2 23 ? 64 (59.9) 3 ? 4 (19.1) 13 ? 16 (20.6) 1 41 ? 64 (41.7) 9 ? 32 (7.1) 1 ? 8 (3.2) 110 C 200 3 jlln 2 7 ? 16 (61.9) 1 11 ? 16 (42.9) 7 ? 8 (22.2) 1 1 ? 16 (27.0) 27 ? 32 (21.4) 11 ? 32 (8.7) 3 ? 16 (4.8) jlls 3 1 ? 4 (82.6) 2 1 ? 2 (63.5) 7 ? 8 (22.2) 1 1 ? 16 (27.0) 1 21 ? 32 (42.1) 11 ? 32 (8.7) 3 ? 16 (4.8) 225 C 400 3 jlln 2 3 ? 4 (69.9) 1 27 ? 32 (46.8) 1 (25.4) 1 5 ? 16 (33.3) 53 ? 64 (21.0) 13 ? 32 (10.3) 1 ? 4 (6.4) jlls 3 5 ? 8 (92.1) 2 23 ? 32 (69.1) 1 (25.4) 1 19 ? 32 (40.5) 1 23 ? 32 (43.7) 13 ? 32 (10.3) 1 ? 4 (6.4) 450 C 600 3 jlln 3 1 ? 16 (77.8) 2 1 ? 32 (51.6) 1 1 ? 4 (31.8) 1 19 ? 32 (40.5) 7 ? 8 (22.2) 31 ? 64 (12.3) 5 ? 16 (7.9) jlls 3 63 ? 64 (101.2) 2 61 ? 64 (75.0) 1 1 ? 4 (31.8) 2 1 ? 16 (52.4) 1 49 ? 64 (44.8) 31 ? 64 (12.3) 5 ? 16 (7.9) 700 C 800 3 jlln 3 3 ? 8 (85.7) 2 7 ? 32 (64.3) 1 3 ? 4 (44.5) 2 1 ? 16 (52.4) 7 ? 8 (22.2) 35 ? 64 (13.9) 3 ? 8 (9.5) jlls 4 21 ? 64 (109.9) 3 11 ? 64 (80.6) 1 3 ? 4 (44.5) 2 1 ? 2 (63.5) 1 55 ? 64 (47.2) 35 ? 64 (13.9) 3 ? 8 (9.5) 900 C 1200 3 jlln 4 (101.6) 2 17 ? 32 (64.3) 2 (50.8) 2 1 ? 2 (63.5) 1 1 ? 32 (26.2) 39 ? 64 (15.5) 7 ? 16 (11.1) jlls 5.27 (133.9) 3.80 (96.5) 2 (50.8) 2.63 (66.8) 2.30 (58.4) 0.67 (15.5) 0.44 (11.2) current-limiting effects of jlls (600v) fuses short circuit current* apparent rms symmetrical current for various fuse ratings 30a 60a 100a 200a 400a 600a 800a 1200a 5,000 750 1,225 1,400 2,850 4,600 5,000 5,000 5,000 10,000 945 1,525 1,700 3,600 6,000 8,500 9,400 10,000 15,000 1,050 1,700 2,000 4,050 6,600 9,750 10,500 13,000 20,000 1,150 1,900 2,200 4,450 7,250 10,500 11,000 14,750 25,000 1,300 2,050 2,400 4,800 8,000 11,500 12,500 15,500 30,000 1,375 2,150 2,450 5,000 8,250 12,000 13,750 16,500 35,000 1,400 2,250 2,600 5,100 8,500 13,000 14,000 17,000 40,000 1,425 2,400 2,800 5,200 8,700 14,000 14,750 18,000 50,000 1,600 2,450 2,900 6,000 9,500 14,500 16,000 20,000 60,000 1,650 2,625 3,100 6,250 10,000 15,500 17,300 21,000 80,000 1,825 2,800 3,400 7,000 11,000 17,000 18,750 23,000 100,000 2,000 3,100 3,700 7,250 12,000 18,000 20,000 25,000 150,000 2,250 3,400 4,300 8,500 13,000 21,000 23,000 28,500 200,000 2,450 3,800 4,600 9,000 15,000 23,000 25,000 31,000 * prospective rms sy mm etrical a m peres short-circuit current note: data derived from peak let-thru curves current-limiting effects of jlln (300v) fuses short circuit current* apparent rms symmetrical current for various fuse ratings 30a 60a 100a 200a 400a 600a 800a 1200a 5,000 700 775 1,100 1,650 3,500 4,000 5,000 5,000 10,000 900 1,000 1,400 2,100 4,400 5,100 6,750 8,250 15,000 1,000 1,100 1,600 2,400 5,000 5,900 7,750 10,000 20,000 1,100 1,250 1,800 2,700 5,500 6,500 8,750 11,000 25,000 1,230 1,300 1,950 2,900 6,000 7,000 9,500 12,000 30,000 1,300 1,475 2,050 3,100 6,400 7,500 10,000 12,500 35,000 1,330 1,575 2,150 3,300 6,750 7,750 10,500 13,500 40,000 1,430 1,600 2,300 3,500 7,000 8,000 11,000 14,000 50,000 1,500 1,750 2,400 3,700 7,500 8,750 12,000 15,000 60,000 1,700 1,900 2,700 4,000 8,000 9,500 12,500 16,000 80,000 1,850 2,100 2,800 4,400 9,000 10,500 14,000 17,500 100,000 2,000 2,250 3,150 4,800 9,750 11,500 15,000 18,500 150,000 2,300 2,600 3,600 5,500 11,000 13,000 17,500 22,000 200,000 2,600 2,800 3,900 6,000 12,000 14,500 19,500 24,000 * prospective rms sy mm etrical a m peres short-circuit current note: data derived from peak let-thru curves
general purpose fuses general purpose fuses 43 w w w . l i t t e l f u s e . c o m ? 2005 littelfuse ? powr-gard ? products catalog jlln/jlls powr-t ? class t fuses 300/600 vac ? fast acting ? 1 C 1200 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 1 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 8 10 20 30 40 60 80 100 5 30a 60a 100a 200a 400a 600a 800a 1200a time in second s current in amperes 558007 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 1 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 8 10 20 30 40 60 80 100 5 30a 60a 100a 200a 400a 600a 800a time in seconds current in amperes 559008 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000 100 200 300 400 600 800 1000 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000 300000 400000 600000 800000 1000000 1200a 800a 600a 400a 200a 100a 60a 30a peak let -thru in amperes ava ilable f aul t current symmetrical r. m. s. amperes 05558007 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000 100 200 300 400 600 800 1000 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000 300000 400000 600000 800000 1000000 800a 600a 400a 200a 100a 60a 30a peak let -thru in amperes ava ilable f aul t current symmetrical r. m. s. amperes 05559007 jlls jlln jlls jlln
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