$145.86 per piece


Brand / Manufacturer: MERSEN (FERRAZ SHAWMUT)

Amperage Rating: 400

Voltage: 500

UPC: 0782001947910

Department: 16

Series: A50QS

Catalog Number: A50QS400-4

Catalog / Class: Semiconductor

Speed: Very Fast Acting

SKU: A50QS400-4

Categories: , , , , ,

*Prices Subject to Change



Amp-Trap Form 101 Semiconductor Fuse, Fast-Acting, Blade Bolt-In, 500VAC IR AC 200kA, 500VDC IR DC 100kA, 400A, 400 Amp, UL Recognized, CSA, A50QS-400-4, A50QS 400-4, Ferraz Shawmut

A50QS Amp-Trap® Form 101 fuses grew out of the need to improve the overall performance of semiconductor fuses in response to new equipment requirements. The A50QS encompasses the best protection features – lower I2t to provide better protection for equipment, longer life when subjected to cyclic loading and lower watts loss. A50QS is today’s best choice for the protection of dynamic solid state equipment such as motor drives, inverters, UPS, etc.

  • Lowest I2t for greatest protection of semiconductor circuits
  • Low watts loss for cooler operation
  • Superior cycling ability gives an equipment design advantage
  • State-of-the-art protection for 500V equipment
  • Ultra compact sizes allow down-sizing of existing equipment


  • Protection of 500V or less motor drives, UPS, inverters, etc.