Semiconductor Fuses


  • L50QS

  • The L50QS Series is a next generation High-Speed Fuse for the protection of power semiconductor devi...More

  • Amps (A): 35, 40, 50, 60, 70, 80, 90, 100, 125, 150, 175, 200, 225, 250, 275, 300, 325, 350, 400, 450 more

  • VAC (V): 500

  • VDC (V): 500

  • L70QS

  • The L70QS Series is a next generation High-Speed Fuse for the protection of power semiconductor devi...More

  • Amps (A): 35, 40, 50, 60, 70, 80, 90, 100, 125, 150, 175, 200, 225, 250, 300, 350, 400, 450, 500, 600 more

  • VAC (V): 700

  • VDC (V): 700

  • Littelfuse PSR High-Speed Fuse Series

    PSR Series

  • Littelfuse PSR Series High-Speed Square Body Fuses are specially designed for protection of power se...More

  • Amps (A): 125, 160, 200, 250, 315, 350, 400, 450, 500, 550, 630, 700, 800, 900, 100, 1100, 1000, 1250, 1400, 1500 more

  • Interrupting Rating: 200kA@700VAC, 100kA@1300VAC

  • Opening: Very Fast-Acting (FF)

Semiconductor fuses protect against over-voltages in various semiconductor applications such as rectifiers, inverters, DC drives, UPS and variable speed drive systems. Littelfuse offers a wide variety of semiconductor fuses to meet your growing needs.