Class J Fuses


  • Voltage: 600VAC, 300VD
  • AC Amperages: 1A to 600A
  • DC Amperages: 1A to 600A
  • Interrupting Rating: 200KA AC, 100KA DC
  • Fast Acting & Time Delay


  • Class J fuses are designed with special dimensions to prevent the substitution of other fuses with lower voltage ratings, interruption ratings, or current limiting capability.
  • High Current Limiting for low peak let-thru current. Designed for Capacitors, Load Centers, Panelboards, Switchboards, Bus Duct, Feeder Circuits, Circuit Breakers, Lighting, Heating, and General Loads.
  • UL / CSA Standard protection against short circuit.
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