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L50S400 Dataheets PDF



Part Number L50S400
Manufacturers Littelfuse
Logo Littelfuse
Description Semiconductor Fuses
Datasheet L50S400 DatasheetL50S400 Datasheet (PDF)

Semiconductor Fuses 150/250/500/600/700 VAC s Very Fast-Acting s 1 – 1000 Amperes SPECIFICATIONS Voltage Ratings: L15S: 150 V AC/DC (1 – 60A) 150 VAC (70 – 1000A) 100 VDC (70 – 1000A) L25S: 250 V AC/DC (1 – 200A) 250 VAC (225 – 800A) 200 VDC (225 – 800A) L50S: 500 VAC/450VDC L60S: 600 VAC KLC: 600 VAC L70S: 700VAC/650VDC Interrupting Rating: AC: 200,000 rms amperes (L15S series 100,000 amperes) DC: 20,000 amperes Ampere Range: 1 – 1000 amperes See Rating Table for ratings available in each se.

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Semiconductor Fuses 150/250/500/600/700 VAC s Very Fast-Acting s 1 – 1000 Amperes SPECIFICATIONS Voltage Ratings: L15S: 150 V AC/DC (1 – 60A) 150 VAC (70 – 1000A) 100 VDC (70 – 1000A) L25S: 250 V AC/DC (1 – 200A) 250 VAC (225 – 800A) 200 VDC (225 – 800A) L50S: 500 VAC/450VDC L60S: 600 VAC KLC: 600 VAC L70S: 700VAC/650VDC Interrupting Rating: AC: 200,000 rms amperes (L15S series 100,000 amperes) DC: 20,000 amperes Ampere Range: 1 – 1000 amperes See Rating Table for ratings available in each series. Approvals: UL Recognized under the Components Program and CSA Recognized under the Component Acceptance Program. UL File No: E71611 CSA File No: LR29862 L15S and L25S series fuses are Littelfuse Certified for DC ratings shown in Rating Table. AMPERE RATINGS See Rating Table. RECOMMENDED FUSE BLOCKS LSCR series:Refer to Fuse Block section of this catalog for additional information. Designed to protect today’s equipment and systems, Littelfuse semiconductor fuses are manufactured with Littelfuse-developed technology that sets tomorrow’s standards for accuracy, consistent quality, reliability, and predictable performance. By using advanced metallurgical, polymer, and materials research; mathematical modeling, and computerized statistical analysis; Littelfuse engineers have redefined “State-of-the-Art.” SAFETY s 200,000 A.I.R. — Reliable interruption of all overcurrents up to 200,000 amperes . . . meets present and future system requirements. (Note: L15S series has 100,000 A.I.R.) Extremely Current Limiting — Low I2t and peak let-through currents meet most semiconductor requirements. UL Recognized — Littelfuse semiconductor fuses are recognized under the components program of Underwriters Laboratories, Inc., and carry the mark. UL Recognized semiconductor fuses may be used to provide supplementary protection in UL listed equipment. s s APPLICATIONS Designed specifically for supplementary protection of semiconducting devices such as silicon controlled rectifiers (SCR’s), 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 no time delay are required. LONGER EQUIPMENT LIFE s Low Watt Losses — Means less heating and power consumption in circuit. Controlled Transient Overvoltages — All circuits are subject to transient overvoltages during fault current interruption. These transient overvoltages (arc voltages) start when fuse links melt or circuit breaker contacts part, and subside when circuit is interrupted. Semiconductors are very sensitive to overvoltages. Littelfuse semiconductor fuse designs keep transient overvoltages to low levels and help reduce semiconductor failure. s 80 Semiconductor Fuses 150/250/500/600/700 VAC s Very Fast-Acting s 1 – 1000 Amperes RATING TABLE Series & .


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