Special Purpose Fuses Semiconductor Fuses 150 1300 VAC Very Fast Acting 1 6000 Amperes Semiconductor Fuses Littelfuse Semiconductor fuses are very fast acting fuses designed specifically for the protection of diodes, thyristors, triacs, and other solid-state power semiconductor devices. These fuses are used in power electronic applications including variable speed drives, power rectifiers, UPS systems, and DC power supplies. They can be used wherever extremely fast acting, current-limiting fuses are needed to provide superior protection against the potentially damaging effects of short-circuit currents. The extensive line of Littelfuse Semiconductor fuses includes the traditional round body fuses, enhanced state-of-the-art round body fuses, and North American style square body fuses. Available ratings range from 150 to 1300 volts and up to 6000 amps. Applications Semiconductor fuses are designed specifically for supplementary protection of semiconducting devices such as silicon controlled rectifiers (SCRs), diodes, thyristors, triacs, transistors, and similar solid-state devices. These devices are used in power equipment including variable speed drives, power rectifiers, UPS systems, DC power supplies, and in a wide range of electronic equipment. May be used wherever extremely fast acting, current-limiting fuses with Features & Benefits no time-delay are required. Extremely current-limiting 2 Low I t and peak let-through currents Low watts loss High Interrupting ratings UL Recognized Wide range of ampere ratings Optional mounting types DC ratings Superior cycling abilities Compact sizes Optional blown fuse indicators Ratings 150V: 1 6000A 250V: 1 4500A 300V: 35 4500A 500V: 10 1200A 600V: 1 2000A 700V: 6 2500A 1000V: 15 1000A 1200V: 1 30A 1300V: 50 1800A Recommended Fuse Blocks: LSCR and 1LS series: Refer to the Blocks & Holders section of this catalog for additional information. 84 www.littelfuse.com 2005 Littelfuse POWR-GARD Products Catalog Special Purpose FusesSpecial Purpose Fuses Special Purpose Fuses Traditional Semiconductor Fuses 150/250/500/600/700 VAC Very Fast Acting 1 1200 Amperes Series & Voltage Specifications Ampere L15S L25S* L50S L70S* Ratings 150V AC 250V AC L60S KLC Voltage Ratings: 500V AC 700V AC 150V DC (1 60A) 250V DC (1 200A) 600V AC 600V AC L15S: 150 V AC/DC (1 60A) 450V DC 650V DC 100V DC (70 1000A) 200V DC (225 800A) 150 VAC (70 1000A) 1 L15S 1 L25S 1 L60S 1 KLC 1 100 VDC (70 1000A) 2 L15S 2 L25S 2 L60S 2 KLC 2 L25S: 250 V AC/DC (1 200A) 3 L15S 3 L25S 3 L60S 3 KLC 3 250 VAC (225 800A) 4 L15S 4 L25S 4 L60S 4 KLC 4 200 VDC (225 800A) L50S: 500 VAC/450 VDC 5 L15S 5 L25S 5 L60S 5 KLC 5 L60S: 600 VAC 6 L15S 6 L25S 6 L60S 6 KLC 6 KLC: 600 VAC 7 L15S 7 KLC 7 L70S: 700VAC/650VDC 8 L15S 8 L25S 8 L60S 8 KLC 8 9 L15S 9 Interrupting Rating: 10 L15S 10 L25S 10 L50S 10 L60S 10 KLC 10 L70S 10 AC: 200,000 rms amperes 12 L15S 12 L25S 12 L50S 12 L60S 12 KLC 12 (L15S series 100,000A) DC: 20,000 amperes 15 L15S 15 L25S 15 L50S 15 L60S 15 KLC 15 L70S 15 1 1 1 17 2 L60S 17 2 KLC 17 2 Ampere Range: 20 L15S 20 L25S 20 L50S 20 L60S 20 KLC 20 L70S 20 1 1200 amperes 25 L15S 25 L25S 25 L50S 25 L60S 25 KLC 25 L70S 25 See Rating Table for ratings available in each 30 L15S 30 L25S 30 L50S 30 L60S 30 KLC 30 L70S 30 series. 35 L15S 35 L25S 35 L50S 35 L60S 35 KLC 35 L70S 35 40 L15S 40 L25S 40 L50S 40 L60S 40 KLC 40 L70S 40 Approvals: UL Recognized under the Components 45 L15S 45 L25S 45 L60S 45 KLC 45 Program and CSA Recognized under the 50 L15S 50 L25S 50 L50S 50 L60S 50 KLC 50 L70S 50 Component Acceptance Program. 60 L15S 60 L25S 60 L50S 60 L60S 60 KLC 60 L70S 60 UL File No: E71611 70 L15S 70 L25S 70 L50S 70 L60S 70 KLC 70 L70S 70 CSA File No: LR29862 80 L15S 80 L25S 80 L50S 80 L60S 80 KLC 80 L70S 80 L25S series fuses are Littelfuse Certified for 90 L15S 90 L25S 90 L50S 90 L60S 90 KLC 90 L70S 90 DC ratings shown in Rating Table. 100 L15S 100 L25S 100 L50S 100 L60S 100 KLC 100 L70S 100 *For availability of RoHS compliant 110 KLC 110 product, call 1-800-TEC-FUSE. 125 L15S 125 L25S 125 L50S 125 L60S 125 KLC 125 L70S 125 150 L15S 150 L25S 150 L50S 150 L60S 150 KLC 150 L70S 150 175 L25S 175 L50S 175 L60S 175 KLC 175 L70S 175 200 L15S 200 L25S 200 L50S 200 L60S 200 KLC 200 L70S 200 225 L25S 225 L50S 225 L60S 225 KLC 225 L70S 225 250 L15S 250 L25S 250 L50S 250 L60S 250 KLC 250 L70S 250 275 L25S 275 L50S 275 300 L15S 300 L25S 300 L50S 300 L60S 300 KLC 300 L70S 300 350 L15S 350 L25S 350 L50S 350 L60S 350 KLC 350 L70S 350 400 L15S 400 L25S 400 L50S 400 L60S 400 KLC 400 L70S 400 450 L15S 450 L25S 450 L50S 450 L60S 450 KLC 450 L70S 450 500 L15S 500 L25S 500 L50S 500 L60S 500 KLC 500 L70S 500 550 L50S 550 600 L15S 600 L25S 600 L50S 600 L60S 600 KLC 600 L70S 600 700 L25S 700 L50S 700 L60S 700 KLC 700 L70S 700 800 L15S 800 L25S 800 L50S 800 L60S 800 KLC 800 L70S 800 900 LA50P9004 LA70P9004 1000 L15S 1000 LA50P10004 LA70P10004 1200 LA50P12004 LA70P12004 KLC series fuses are recommended for replacement use only. 2005 Littelfuse POWR-GARD Products Catalog www.littelfuse.com 85