BULLET™ CLASS L TIME-DELAY FUSES BULLET™ CLASS L FAST-ACTING FUSES Catalog Number LCL (300 - 6000A) Time-Delay 600 Volts AC or Less Catalog Number LCU (601 - 6000A) Fast-Acting 600 Volts AC or Less 300* 400* 500* 601 650 700 750 800 601 650 700 800 1000 1200 AMPERE RATINGS LCL 600V 801 1350 900 1400 1000 1500 1200 1600 LCU 600V 1350 1800 1500 2000 1600 2500 1800 2000 2500 3000 3500 4000 5000 6000 3000 3500 4000 6000 — — * Not UL Listed (See note below). LCL:Time-delay of 5 seconds minimum at 500% rated current allows closer sizing. LCU:Pure (over 99%) silver links insures maximum current limitation capability. NOTE: LCL 300 - 600 amp fuses are physically the same as 800 amp size; Use in 800 amp switch where load current is not fully utilized and a smaller fuse amp size is desired. Also useful in new installations to allow for future upgrades in service. BENEFITS: • “O-ring” construction insures maximum current limiting ability. • Silver plated micro-peened terminals. • High strength melamine fuse tubes. APPLICATIONS: • LCL: Recommended for AC power distribution system mains and large feeders. • LCU: Recommended for non-inductive heating and lighting loads. Also suitable for protection of low interrupting rating circuit breakers. 14 LCL/LCU SPECIFICATIONS LCL: Time-Delay LCU: Fast-Acting Voltage Rating: LCL - 600VAC, LCU - 600VAC Ampere Rating: LCL: 300 - 6000 Amps LCU: 601 - 6000 Amps Interrupting Rating: 200,000 RMS Symmetrical Amps Current Limiting: Class L Fuse Agency Approvals: UL Listed, Class L, Guide JDDZ, File E162363 CSA Certified HRC-L per C22.2, No. 248.10 Self-Certified DC Ratings: Voltage Rating: LCL and LCU (601-1600) 340 VDC Interrupting Rating: 50,000 Amperes DC RECOMMENDED SIZING: LCL: 150% or more of motor full load current. RECOMMENDED UPGRADE: None Available. EDISON LCL LCU CROSS REFERENCE BUSSMANN GOULD KLU A4BY KTU None LITTELFUSE KLP-C, KLLU None BULLET™ CLASS L TIME-DELAY FUSES BULLET™ CLASS L FAST-ACTING FUSES AVERAGE TIME/CURRENT CURVE 5000A 6000A 4000A 3000A 2000A AMPERE RATING 1200A 1350A 1600A Cat. No. LCU (Amp) 600 VAC 800A 4000A 1200A 1600A 2000A 3000A 300 800A Cat. No.LCL (Amp) 600 VAC AMPERE RATING 300 200 100 100 80 60 40 30 20 10 10 8 6 TIME IN SECONDS TIME IN SECONDS 4 1 3 2 1 .8 .6 .4 .3 .2 .1 .1 .08 .06 .04 .03 80,000 100,000 60,000 40,000 30,000 20,000 8,000 10,000 6,000 4,000 3,000 1,000 100,000 .01 10,000 1,000 .01 2,000 .02 RMS SYMMETRICAL CURRENT IN AMPERES RMS SYMMETRICAL CURRENT IN AMPERES 15 BULLET™ CLASS L TIME-DELAY FUSES BULLET™ CLASS L FAST-ACTING FUSES PEAK LET-THROUGH CURRENT CURVES* LCL (600V) LCU (600V) B 400,000 B 400,000 6,000 5,000 4,000 3,000 2,500 2,000 1,600 1,200 800 601 RMS SYMMETRICAL CURRENTS IN AMPERES A-B= ASYMMETRICAL AVAILABLE PEAK (2.3 X SYMM RMS AMPS) 60,000 AMPERE RATING 40,000 30,000 20,000 10,000 8,000 6,000 4,000 3,000 A 200,000 80,000 100,000 60,000 40,000 30,000 20,000 8,000 10,000 6,000 4,000 1,000 3,000 2,000 2,000 200,000 1,000 1,000 100,000 A 100,000 80,000 1,000 10,000 200,000 INSTANTENOUS PEAK LET THRU CURRENT AMPERES AMPERE RATING 100,000 10,000 INSTANTENOUS PEAK LET THRU CURRENT AMPERES 300,000 4,000 3,000 2,500 2,000 1,600 1,200 800 RMS SYMMETRICAL CURRENTS IN AMPERES A–B=ASYMMETRICAL AVAILABLE PEAK (2.3 X SYMM RMS AMPS) CURRENT LIMITATION TABLES** LCL (600V) LCU (600V) Current-Limiting Effects *Prosp. Let-Thru Current (Apparent RMS Symmetrical) S.C.C. Versus Fuse Ratings 800A 1200A 1600A 2000A 3000A 5,000 5,000 5,000 5,000 5,000 5,000 10,000 10,000 10,000 10,000 10,000 10,000 15,000 13,000 15,000 15,000 15,000 15,000 20,000 14,000 18,000 20,000 20,000 20,000 25,000 16,000 21,000 25,000 25,000 25,000 30,000 16,500 22,500 26,000 30,000 30,000 40,000 18,000 25,500 29,000 34,000 40,000 50,000 19,000 27,000 32,000 37,000 42,000 60,000 21,000 29,000 35,000 41,000 45,000 80,000 24,000 32,000 39,000 45,000 51,000 100,000 26,000 36,000 41,000 51,000 55,000 150,000 30,000 40,000 48,000 58,000 66,000 200,000 34,000 45,000 52,000 65,000 76,000 Current-Limiting Effects *Prosp. Let-Thru Current (Apparent RMS Symmetrical) S.C.C. Versus Fuse Ratings 800A 1200A 1600A 2000A 3000A 4000A 5,000 5,000 5,000 5,000 5,000 5,000 5,000 10,000 9,700 10,000 10,000 10,000 10,000 10,000 15,000 11,500 13,000 15,000 15,000 15,000 15,000 20,000 12,500 15,400 18,000 20,000 20,000 20,000 25,000 14,000 16,000 21,000 25,000 25,000 25,000 30,000 14,500 17,500 22,000 27,000 30,000 30,000 35,000 15,000 18,000 24,000 28,000 35,000 35,000 40,000 15,500 19,000 25,000 29,000 40,000 40,000 50,000 16,000 21,000 26,000 32,000 44,000 48,000 60,000 19,000 24,000 28,000 34,000 48,000 51,000 80,000 20,000 26,000 31,000 36,000 52,000 60,000 100,000 23,000 29,000 39,000 40,000 57,000 68,000 150,000 27,000 34,000 40,000 47,000 70,000 79,000 200,000 29,000 39,000 43,000 50,000 78,000 93,000 * RMS Symmetrical Amperes Short-Circuit Current. NOTE: Data derived from Current Limiting Curves. 4000A 5,000 10,000 15,000 20,000 25,000 30,000 40,000 45,000 50,000 57,000 64,000 78,000 92,000 6000A 5,000 10,000 15,000 20,000 25,000 30,000 40,000 50,000 60,000 80,000 90,000 110,000 140,000 5000A 6000A 5,000 5,000 10,000 10,000 15,000 15,000 20,000 20,000 25,000 25,000 30,000 30,000 35,000 35,000 40,000 40,000 50,000 50,000 60,000 60,000 72,000 80,000 81,000 95,000 98,000 115,000 110,000 141,000 *RMS Symmetrical Amperes Short-Circuit Current. NOTE: Data derived from Current Limiting Curves. *Curves test data obtained at 15% short-circuit power factor when possible. **"Apparent Let-Thru Amperes" values are read from "Peak Let-Through Current Curves" and the peak current value divided by 2.3 Asymmetry Factor. 16 BULLET™ CLASS L TIME-DELAY FUSES BULLET™ CLASS L FAST-ACTING FUSES GENERAL APPLICATION: Edison Class L fuses, Catalog Numbers LCL time-delay or LCU fast acting are recommended for high capacity main, feeder or branch circuits in power distribution systems and for special applications such as system upgrading, install ahead of network protectors, etc. The choice of LCL or LCU depends on the extent of mixed inductive and non-inductive loads diversity. Apply LCL fuses for protection of large individual motor circuits. Size LCL fuses at 150% or more of the motor nameplate current rating by checking starting characteristics against minimum melt Time/Current Curve. CLASS L FUSES SPECIFICATION: INSTALL CLASS L FUSES (600VAC) in switches rated 800-6000 amperes and in AMPERE RATINGS and “timedelay” or “fast-acting” types as shown on the plans. Installed and spare “time-delay” fuses shall be Catalog Number LCL and “fast-acting” fuses shall have silver links and be Catalog Number LCU. Fuses shall be manufactured by Edison Fusegear or equivalent submitted to the design engineer for approval 10 days prior to the project bid date. MOUNTING OF “BOLT-ON” FUSES shall be made by installing stainless steel bolts of correct number, diameter and length+, stainless steel spring washers on each side of the bolt and stainless steel nuts. The nuts shall be tightened to the torque recommended by ASTM Standards for the bolt size used. +Bolts shall have the largest diameter to fit fuse bolt holes and length to allow full nut thread engagement. Bolts shall be installed in each fuse mounting hole. CLASS L FUSES MOUNTING DIMENSIONS IN INCHES* OVERALL DIMENSIONS IN INCHES* 17