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Approvals & Standards

  • UL recognized component UL File 60314
  • AC: UL guide no. JFHR2
  • DC Tested to UL standard 198L parameters (70-1200A)
  • CSA Certified LR12636

Key features & benefits

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.

More specifications


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

Product Specifications

Item Number



High Speed Fuse Amp-Trap® A50QS 500VAC 500VDC 125A Blade IL Indicator  

EAN/UPC code


Rated voltage AC UL

500   V

Rated voltage DC UL

500   V

Rated current

125   A

ROHS Compliant



High Speed  



AC Max I.R./Breaking Capacity: I1

50   kA

Indication System


Indication System Type

IL Indicator  

Contact materials

Tin-Plated Brass  

Connection/Terminal Type


Body/Insulating Material


Product Weight

0.2132   kg

Product Diameter

31   mm

Product Length

92.2   mm

Sell Pack Quantity

5   Each

Sell Pack Weight

1.1204   kg

Sell Pack Width

131.8   mm

Sell Pack Length

342.9   mm

Sell Pack Height

84.1   mm