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Nedco: Mersen – AJT200 FUSE (J) 600V TIME DELAY

Nedco: Mersen - AJT200 FUSE (J) 600V TIME DELAY

April 11, 2025

AJT200 FUSE (J): Current Limiting Fiberglass Tube Solid State Smart Stop Indicator

Fuse AJT – Class J – Time-delay 600VAC 500VDC 200A Blade SmartSpot Amp-Trap 2000

Amp-Trap 2000 SmartSpot AJT fuses now provide a visual open fuse indicator. With advanced material technology the AJT200 fuse provides IEC Type 2 No Damage protection to main, feeder, and branch circuits, for all types of loads — yet they require only half the mounting space needed for 600VAC Class RK fuses. AJT’s time-delay characteristics are ideal for handling typical motor and transformer inrush currents, while also providing superior current-limiting ability.

AJT200 FUSE Features & Benefits

  • Solid state SmartSpot visual blown fuse indicator
  • Time-delay for motor starting and transformer inrush
  • 300kA interrupting rating – self-certified, UL witnessed tests
  • Extremely current-limiting for low peak let-thru current
  • Most current-limiting UL class fuse
  • Recommended for Arc Flash energy reduction
  • Small footprint requires less mounting space and allows smaller, more economical fuse blocks
  • Easy 2-to-1 selectivity for prevention of nuisance shutdowns
  • Unique Class J dimensions prevent replacement errors
  • 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 mount for AJT70 to 600 open fuse indication

Highlights

  • SmartSpot indicator
  • Time-delay
  • Highly current limiting
  • Arc Flash mitigating
  • DC ratings
  • Optional mechanical indicator (70 to 600A fuses)

Applications

  • Motor Circuits
  • Mains
  • Feeders
  • Branch Circuits
  • Lighting, Heating & General Loads
  • Transformers
  • Control Panels
  • Circuit Breaker Back-Up
  • Bus Duct
  • Load Centers

Technical Specifications

Class J Fuses
Mfr UNSPSC39121604
DescriptionAJT200 FUSE J TD 600V
Terminal TypeBLADE
Length5-3/4 INCH
Additional InformationCURRENT LIMITING FIBERGLASS TUBE SOLID STATE SMART STOP INDICATOR
Product NamePOWER FUSE
ApprovalUL 198L, UL 248-8, CSA C22.2
Voltage Rating600 VAC/500 VDC
Mfr FullnameMERSEN (FORMERLY FERRAZ SHAWMUT INC)
TypeCLASS J
CharacteristicsTIME DELAY
Diameter1-5/8 INCH
MfrcodeMFZ
Catalog NumberAJT200
Interrupting Rating200 KILOAMPERE (AC), 100 KILOAMPERE (DC)
Current Rating200 AMPERE
April 11, 2025 - Nedco_ Mersen - AJT200 FUSE (J) 600V TIME DELAY

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