L50S Series – High-Speed Semiconductor Fuse Series - Littelfuse L50S High-Speed Fuses Provide Superior Protection

Series: L50S Series – High-Speed Semiconductor Fuse
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POWR-Speed Overcurrent Protection Fundamentals
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The L50S series is a POWR-SPEED® high-speed fuse designed for modern-day, sensitive power electronic devices that require ultimate protection against overcurrent. POWR-SPEED® brand fuses are optimized for performance and efficiency to help extend equipment life. They offer Littelfuse-developed technology that sets tomorrow’s standards for accuracy, consistent quality, reliability, and predictable performance. Littelfuse engineers have redefined high-speed fuse technology by using advanced metallurgical, polymer, and materials research, mathematical modeling, and computerized statistical analysis.

The L50S is very fast-acting with voltage rating at 500 V ac and 450 V dc. It is specifically designed 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. They may be used wherever extremely fast-acting, current-limiting fuses with no time delay are required.

Features

  • Extremely current-limiting
  • Low watt losses
  • POWR-SPEED® technology
  • Low energy let-through (I2t)
  • Controlled transient overvoltages

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Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)Interrupting RatingOpeningVAC (V)VDC (V)StockSamplesCompare
L50S0101020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0121220 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0151520 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0202020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0252520 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0303020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0353520 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0404020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0505020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0606020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0707020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0808020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S0909020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S10010020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S12512520 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S15015020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S17517520 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S20020020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S22522520 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S25025020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S27527520 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S30030020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S350350200 kA @ 500 VacVery Fast-Acting (FF)500450CheckOrder
L50S40040020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S45045020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S50050020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S55055020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S60060020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S70070020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
L50S80080020 kA @ 450 VdcVery Fast-Acting (FF)500450CheckOrder
Catalog # Certificates
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L50S010 CSAiconURiconCURicon
L50S012 CSAiconURiconCURicon
L50S015 CSAiconURiconCURicon
L50S020 CSAiconURiconCURicon
L50S025 CSAiconURiconCURicon
L50S030 CSAiconURiconCURicon
L50S035 CSAiconURiconCURicon
L50S040 CSAiconURiconCURicon
L50S050 CSAiconURiconCURicon
L50S060 CSAiconURiconCURicon
L50S070 CSAiconURiconCURicon
L50S080 CSAiconURiconCURicon
L50S090 CSAiconURiconCURicon
L50S100 CSAiconURiconCURicon
L50S125 CSAiconURiconCURicon
L50S150 CSAiconURiconCURicon
L50S175 CSAiconURiconCURicon
L50S200 CSAiconURiconCURicon
L50S225 CSAiconURiconCURicon
L50S250 CSAiconURiconCURicon
L50S275 CSAiconURiconCURicon
L50S300 CSAiconURiconCURicon
L50S350 CSAiconURiconCURicon
L50S400 CSAiconURiconCURicon
L50S450 CSAiconURiconCURicon
L50S500 CSAiconURiconCURicon
L50S550 CSAiconURiconCURicon
L50S600 CSAiconURiconCURicon
L50S700 CSAiconURiconCURicon
L50S800 CSAiconURiconCURicon
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
L50S010.T FUS 500V SEMICONDUCTOR 10A RoHS No 01/01/2007 PbFree No No
L50S012.T FUS 500V SEMICONDUCTOR 12A RoHS No 01/01/2007 PbFree No No
L50S015.T FUS 500V SEMICONDUCTOR 15A RoHS No 01/01/2007 PbFree No No
L50S020.T FUS 500V SEMICONDUCTOR 20A RoHS No 01/01/2007 PbFree No No
L50S025.T FUS 500V SEMICONDUCTOR 25A RoHS No 01/01/2007 PbFree No No
L50S030.T FUS 500V SEMICONDUCTOR 30A RoHS No 01/01/2007 PbFree No No
L50S035.T FUS 500V SEMICONDUCTOR 35A RoHS No 01/01/2007 PbFree No No
L50S040.T FUS 500V SEMICONDUCTOR 40A RoHS No 01/01/2007 PbFree No No
L50S050.T FUS 500V SEMICONDUCTOR 50A RoHS No 01/01/2007 PbFree No No
L50S060.T FUS 500V SEMICONDUCTOR 60A RoHS No 01/01/2007 PbFree No No
L50S070.T FUS 500V SEMICONDUCTOR 70A RoHS No 01/01/2007 PbFree No No
L50S080.T FUS 500V SEMICONDUCTOR 80A RoHS No 01/01/2007 PbFree No No
L50S090.T FUS 500V SEMICONDUCTOR 90A RoHS No 01/01/2007 PbFree No No
L50S100.T FUS 500V SEMICONDUCTOR 100A RoHS No 01/01/2007 PbFree No No
L50S125.V FUS 500V SEMICONDUCTOR 125A RoHS No 01/01/2007 PbFree No No
L50S150.V FUS 500V SEMICONDUCTOR 150A RoHS No 01/01/2007 PbFree No No
L50S175.V FUS 500V SEMICONDUCTOR 175A RoHS No 01/01/2007 PbFree No No
L50S200.V FUS 500V SEMICONDUCTOR 200A RoHS No 01/01/2007 PbFree No No
L50S225.V FUS 500V SEMICONDUCTOR 225A RoHS No 01/01/2007 PbFree No No
L50S250.V FUS 500V SEMICONDUCTOR 250A RoHS No 01/01/2007 PbFree No No
L50S275.V FUS 500V SEMICONDUCTOR 275A RoHS No 01/01/2007 PbFree No No
L50S300.V FUS 500V SEMICONDUCTOR 300A RoHS No 01/01/2007 PbFree No No
L50S350.V FUS 500V SEMICONDUCTOR 350A RoHS No 01/01/2007 PbFree No No
L50S400.V FUS 500V SEMICONDUCTOR 400A RoHS No 01/01/2007 PbFree No No
L50S450.X FUS 500V SEMICONDUCTOR 450A RoHS No 01/01/2007 PbFree No No
L50S500.X FUS 500V SEMICONDUCTOR 500A RoHS No 01/01/2007 PbFree No No
L50S550.X FUS 500V SEMICONDUCTOR 550A RoHS No 01/01/2007 PbFree No No
L50S600.X FUS 500V SEMICONDUCTOR 600A RoHS No 01/01/2007 PbFree No No
L50S700.X FUS 500V SEMICONDUCTOR 700A RoHS No 01/01/2007 PbFree No No
L50S800.X FUS 500V SEMICONDUCTOR 800A RoHS No 01/01/2007 PbFree No No
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