L50S Series - 500 Vac/450Vdc - Traditional Semiconductor Fuse

l50s fuses
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.”

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.

Safety
  • 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.
Safety
  • 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.

Access specifications, certifications, check availability and order parts below

Catalog #CertificatesAmps (A)VAC (V)VDC (V)Interrupting RatingOpeningStockSamplesCompare
L50S010CSA_142230 0298622iconUL_JFHR2 E71611icon1050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S012CSA_142230 0298622iconUL_JFHR2 E71611icon1250045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S015CSA_142230 0298622iconUL_JFHR2 E71611icon1550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S020CSA_142230 0298622iconUL_JFHR2 E71611icon2050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S025CSA_142230 0298622iconUL_JFHR2 E71611icon2550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S030CSA_142230 0298622iconUL_JFHR2 E71611icon3050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S035CSA_142230 0298622iconUL_JFHR2 E71611icon3550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S040CSA_142230 0298622iconUL_JFHR2 E71611icon4050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S050CSA_142230 0298622iconUL_JFHR2 E71611icon5050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S060CSA_142230 0298622iconUL_JFHR2 E71611icon6050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S070CSA_142230 0298622iconUL_JFHR2 E71611icon7050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S080CSA_142230 0298622iconUL_JFHR2 E71611icon8050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S090CSA_142230 0298622iconUL_JFHR2 E71611icon9050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S100CSA_142230 0298622iconUL_JFHR2 E71611icon10050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S125CSA_142230 0298622iconUL_JFHR2 E71611icon12550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S150CSA_142230 0298622iconUL_JFHR2 E71611icon15050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S175CSA_142230 0298622iconUL_JFHR2 E71611icon17550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S200CSA_142230 0298622iconUL_JFHR2 E71611icon20050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S225CSA_142230 0298622iconUL_JFHR2 E71611icon22550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S250CSA_142230 0298622iconUL_JFHR2 E71611icon25050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S275CSA_142230 0298622iconUL_JFHR2 E71611icon27550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S300CSA_142230 0298622iconUL_JFHR2 E71611icon30050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S350CSA_142230 0298622iconUL_JFHR2 E71611icon350500450200000A@500VACVery Fast-Acting (FF)CheckOrder
L50S400CSA_142230 0298622iconUL_JFHR2 E71611icon40050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S450CSA_142230 0298622iconUL_JFHR2 E71611icon45050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S500CSA_142230 0298622iconUL_JFHR2 E71611icon50050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S550CSA_142230 0298622iconUL_JFHR2 E71611icon55050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S600CSA_142230 0298622iconUL_JFHR2 E71611icon60050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S700CSA_142230 0298622iconUL_JFHR2 E71611icon70050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S800CSA_142230 0298622iconUL_JFHR2 E71611icon80050045020000A@450VDCVery Fast-Acting (FF)CheckOrder

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