Low Voltage UL/CSA Fuses

Class J

AJT Reducer Fuses - Class J - Time-delay

AJT Reducer Fuses are a safe permanent solution for decreasing your current rating without using a fuse reducer which are designed and list for temporary use only. These reducer fuses provide the same trusted protection levels as a traditional AJT fuses but in a larger body.



  • Replaces traditional temporary use only fuse reducers
  • Recommended for Arc Flash energy reduction
  • Extremely current-limiting for low peak let-thru current
  • Most current-limiting UL class fuse
  • Time-delay for motor starting and transformer inrush
  • High-visibility orange label gives instant brand recognition
  • Metal-embossed date and catalog number for traceability and lasting identification
  • Fiberglass body provides dimensional stability in harsh industrial settings
  • High-grade silica filler ensures fast arc quenching
  • Optional EI indicator/switch


  • Voltage Range (VAC) 600 or less VAC
  • Voltage Range (VDC) 500 or less VDC
  • Ampere Range (A) 125-200 (in 400A body) A
  • Standards UL listed to standard 248-8 File E2137
    IEC 269-2-1
  • ROHS Compliant Consult Technical Services
  • Lead Free Consult Technical Services
  • CE conformity Consult Technical Services


  • AJT125/400
  • AJT150/400
  • AJT175/400
  • AJT200/400
  • AJT250/600
  • AJT300/600
  • AJT350/600
  • AJT400/600


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