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
L50S010ru1050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S012ru1250045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S015ru1550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S020ru2050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S025ru2550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S030ru3050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S035ru3550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S040ru4050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S050ru5050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S060ru6050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S070ru7050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S080ru8050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S090ru9050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S100ru10050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S125ru12550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S150ru15050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S175ru17550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S200ru20050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S225ru22550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S250ru25050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S275ru27550045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S300ru30050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S350ru350500450200000A@500VACVery Fast-Acting (FF)CheckOrder
L50S400ru40050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S450ru45050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S500ru50050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S550ru55050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S600ru60050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S700ru70050045020000A@450VDCVery Fast-Acting (FF)CheckOrder
L50S800ru80050045020000A@450VDCVery Fast-Acting (FF)CheckOrder

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