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
L50S010csaru1050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S012csaru1250045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S015csaru1550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S020csaru2050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S025csaru2550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S030csaru3050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S035csaru3550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S040csaru4050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S050csaru5050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S060csaru6050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S070csaru7050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S080csaru8050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S090csaru9050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S100csaru10050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S125csaru12550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S150csaru15050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S175csaru17550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S200csaru20050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S225csaru22550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S250csaru25050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S275csaru27550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S300csaru30050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S350csaru350500450200000A@500VACVery Fast-Acting (FF)CheckOrder
L50S400csaru40050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S450csaru45050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S500csaru50050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S550csaru55050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S600csaru60050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S700csaru70050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S800csaru80050045020000A@450VDCVery Fast-Acting (FF)CheckOrder

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