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Littelfuse L50QS250 - High-Speed Fuse 250A 500V

Littelfuse
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Littelfuse L50QS250 is a high-speed semiconductor fuse from the Powr-Speed family, designed to provide overcurrent protection for power electronic circuits. This round body fuse is rated for 500V AC/DC with a continuous current rating of 250A and an interrupting capacity of 200kA at 500V. It features a single-barrel construction with a 1.5-inch diameter and weighs 1 lb, utilizing a silver-plated element for low I²t and fast response. The fuse complies with UL and IEC standards for semiconductor protection. Typical applications include protection of rectifiers, inverters, UPS systems, and variable frequency drives in low-voltage industrial equipment.

Key Features & Specifications
  • Type: L50QS Series – High-Speed Semiconductor Fuse, Round Body
  • Voltage Rating: 500V AC/DC
  • Current Rating: 250A
  • Dimensions: Diameter 1.5 in
  • Standards: UL, IEC
  • Applications: Rectifiers, inverters, UPS systems, variable frequency drives
  • AIC rating: 200kA@500V
  • Barrels: 1
  • Weight: 1 lb


Product Identification
  • UPC: 079458860047