KLPC Series POWR-PRO® Class L Fuses 600 VAC ■ Time-Delay ■ 200 – 6000 Amperes SPECIFICATIONS Voltage Ratings: AC: 600 Volts DC: 480 Volts Interrupting Ratings: AC: 200,000 amperes rms symmetrical 300,000 amperes rms symmetrical (Littelfuse self-certified). DC: 20,000 amperes Ampere Range: 200 – 6000 amperes Approvals: AC: Standard 248-10, Class L UL Listed 601 – 6000 amps (File No: E81895) UL Recognized 200 – 600 amps (File No: E71611) CSA Certified 200 – 6000 amps (File No: LR29862) QPL Federal Specifications WF-1814 700 – 6000 amps DC: Littelfuse self-certified AMPERE RATINGS 200 500 800 1350 2000 3500 250 600 900 1400 2100 4000 300 601 1000 1500 2200 4500 350 650 1100 1600 2300 5000 400 700 1200 1800 2500 6000 450 750 1300 1900 3000 Example part number (series & amperage): KLPC 1000 KLPC series POWR-PRO® fuses provide ideal overcurrent protection for circuits from 200 through 6000 amperes. KLPC series POWR-PRO® fuses specification-grade construction and performance meet or exceed the most stringent project specifications: 99.9% pure silver links, silver-plated copper end bells, glass-reinforced melamine bodies, O-ring seals between body and end bells, and granular quartz fillers. KLPC series POWR-PRO® fuses are the only UL listed Class L fuses that provide a minimum of ten seconds time delay at 500% rated current and are also as current limiting as the fastest Class L fuse on the market. On average, the peak letthrough currents of KLPC series fuses are 10% less than any other “time-delay” Class L fuse. FEATURES AND BENEFITS ■ Eliminate unnecessary downtime — KLPC POWRPRO® series fuses’ time delay withstands system surges and keeps your circuits in service. ■ Best protection for system components — Maximum current limitation means less equipment and system damage when short circuits occur. Reduced damage means that electrical service can be restored quickly, reducing costly downtime, and often permitting equipment repair rather than replacement. ■ Coordinates with other system components — KLPC series fuses provide maximum coordination with fuses and circuit breakers both on the line and load side of the fuses. See the Fuseology section of this catalog for additional information. ■ Eliminate need to oversize fuses — This may permit the use of smaller less expensive switches, and, since the lower rated fuses are more current limiting, equipment receives even better protection. 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.) ■ 300kA Interrupting Rating — Littelfuse self-certified to 300,000 amperes as standard. Meets future trend towards higher available short circuit currents. Primary and secondary protection for transformers Protection of power circuit breakers 7 KLPC Series POWR-PRO® Class L Fuses 600 VAC ■ Time-Delay ■ 200 – 6000 Amperes J J H J F C B A D E F C B A M C B A N M N M FIG.1 FIG.2 J H J H C B A D E F D E F G FIG. 3 A F D B L N M K G G FIG. 4 8 M FIG. 5 DIMENSIONS IN INCHES (mm in parentheses) AMPERES FIG. NO. 200 – 800 1 3-3/4 (95.3) 5-3/4 6-3/4 (146.1) (171.5) 801 – 1200 2 1201 – 1600 A B C D E F G H J K L M N — — 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) — 3-3/4 (95.3) 5-3/4 6-3/4 9-1/4 9-1/2 10-3/4 (146.1) (171.5) (235.0) (241.3) (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) 2 3-3/4 (95.3) 5-3/4 6-3/4 9-1/4 9-1/2 10-3/4 (146.1) (171.5) (235.0) (241.3) (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 – 2000 2 3-3/4 (95.3) 5-3/4 6-3/4 9-1/4 9-1/2 10-3/4 (146.1) (171.5) (235.0) (241.3) (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 – 2500 3 4 101.6) 5-3/4 6-3/4 9-1/4 9-1/2 10- 3/4 (146.1) (171.5) (235.0) (241.3) (273.1) 1-5/8 (41.3) 1-3/4 (44.5) 3-1/2 (88.9) 5 3/4 (127.0) (19.1) 5/8 X 3/4 (15.9) x (19.1) 5/8 X 1- 1/8 (15.9) x (28.6) 2501 – 3000 3 4 5-3/4 6-3/4 9-1/4 9-1/2 10- 3/4 (101.6) (146.1) (171.5) (235.0) (241.3) (273.1) 1-5/8 (41.3) 1-3/4 (44.5) 4 5 3/4 (101.6) (127.0) (19.1) 5/8 x 3/4 (15.9) x (19.1) 5/8 x 1- 1/8 (15.9) x (28.6) 3001 – 4000 4 4 5-3/4 6-3/4 9-1/4 9-1/2 10- 3/4 (101.6) (146.1) (171.5) (235.0) (241.3) (273.1) 1-3/4 (44.5) 3-1/4 (82.6) 4-3/4 5-3/4 3/4 (120.7) (146.1) (19.1) 5/8 x 1-3/8 (15.9) x (34.9) 5/8 x 1-3/8 (15.9) x (34.9) 4001 – 5000 5 4 (101.6) 5-3/4 (146.1) — 9-1/4 (235.0) — 10-3/4 (273.1) 1-5/8 (41.3) 3-1/4 (82.6) 5-1/4 (133.4) 7-1/8 1 (181.0) (25.4) 5/8 DIA. (15.9) — 5001 – 6000 5 4 5-3/4 (101.6) (146.1) — 9-1/4 (235.0) — 10-3/4 (273.1) 1-5/8 (41.3) 3-1/4 (82.6) 5-3/4 (146.1) 7-1/8 1 (181.0) (25.4) 5/8 DIA. (15.9) — KLPC Series POWR-PRO® Class L Fuses 600 VAC Time-Delay ■ ■ 200 – 6000 Amperes Apparent RMS Symmetrical Current for various fuse ratings 800A 1200A 1600A 2000A 3000A 4000A 5000A 6000A 5,000 5,000 5,000 5,000 5,000 5,000 5,000 5,000 8,800 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,500 13,500 15,000 15,000 15,000 15,000 15,000 15,000 12,000 15,000 19,000 20,000 20,000 20,000 20,000 20,000 13,000 16,000 21,000 24,000 25,000 25,000 25,000 25,000 14,000 18,000 23,000 26,000 30,000 30,000 30,000 30,000 15,000 19,000 24,000 27,000 32,000 35,000 35,000 35,000 16,000 20,000 25,000 28,000 34,000 40,000 40,000 40,000 17,000 22,000 27,000 31,000 37,000 42,500 50,000 50,000 18,000 24,000 29,000 34,000 40,000 46,000 52,000 60,000 20,000 26,000 32,000 37,000 44,000 51,000 57,000 70,000 21,000 27,000 34,000 40,000 46,000 57,000 65,000 75,000 23,000 31,000 38,000 44,000 54,000 67,000 75,000 87,000 24,000 34,000 42,000 46,000 57,000 70,000 80,000 95,000 1600A 2000A 2500A 3000A 3500A 4000A 5000A 6000A 800A 1200A Short Circuit Current* 5,000 10,000 Current-Limiting 15,000 Effects of KLPC 20,000 25,000 (600V) fuses 30,000 35,000 * Prospective RMS Symmetrical 40,000 Amperes Short-Circuit Current 50,000 Note: Data derived from Peak 60,000 Let-Thru Curves 80,000 100,000 150,000 200,000 1000 800 600 1000000 800000 600000 400 300 400000 300000 200 6000A 5000A 4000A 3000A 2000A 1600A 1200A 800A 200000 100 80 60 100000 80000 60000 PEAK LET-THRU IN AMPERES 40 30 10 8 6 4 3 2 1 .8 .6 .4 .3 20000 10000 8000 6000 4000 3000 2000 400 300 .1 .08 .06 200 .04 .03 200000 60000 80000 100000 30000 40000 20000 6000 8000 10000 3000 4000 2000 600 800 1000 300 400 100 600000 800000 1000000 300000 400000 200000 60000 80000 100000 30000 40000 20000 6000 8000 10000 3000 4000 2000 300 400 200 80 100 600 800 1000 CURRENT IN AMPERES 200 100 .02 .01 40000 30000 1000 800 600 .2 50 TIME IN SECONDS 20 AVAILABLE FAULT CURRENT SYMMETRICAL R. M. S. AMPERES 9