Semiconductor Fuses / European Cylindrical Style

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Few of today's powered products don't rely on semiconductor technology to some degree. That means extending circuit protection to thyristors, triacs, diodes, and a host of other solid-state components. Ferraz Shawmut offers a vast, truly international line of semiconductor fuses to protect these sensitive components.
A15QS Series / 150V

600V Size 10x38 URB/URD/URL

  • High Interrupting Rating
  • 0.10 to 30 Amps
  • 500-600V AC Voltage Rating
A30QS Series / 300V

700V - A070gRB Size 10x38

  • Extremely Fast Acting
  • 1 to 30 Amps
  • Current limiting
A50QS Series / 500V

690V Size 14x51, 22x58 URC/URD

  • High Interrupting Rating
  • 6 to 1200 Amps
  • 690V AC Voltage Rating
A60Q Series / 600V

690V - 1000V Size 27x60
URB/URQ/URS

  • High Interrupting Rating
  • 32 to 250 Amps
  • 690V-1000V AC Voltage Rating
A70QS Series / 700V

690V Size 27x60 URGD

  • PROTISTOR® FUSES
  • 63 to 250 Amps
  • 600V - 690V AC
A70QS Series / 700V

800V Size 27x60 GRB

  • High Interrupting Rating
  • 8 to 110 Amps
  • Built in Trip Indicator

Fuses and breakers set your panel's short-circuit rating. See how our UL 508A shop rates it.