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Overview

AJT400

Amp-trap 2000 AJT fuses provide non-indication as well as A smartspot visual open fuse indicator. With advanced material technology the AJT 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 600V ac 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. Brand new in case.

  • 400 Amp Fuse
  • Smart Spot
  • Non-indicating or solid state smartspot visual open 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
  • Non-indicating fuses suitable for use in NEC class I division 2 hazardous locations1
  • 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 environments
  • High-grade silica filler ensures fast arc quenching
  • New

Specifications

BrandMersen
Product TypeTime Delay Fuse
AC Voltage Rating600 V
DC Voltage Rating500 V
Current Rating450 A
AC Interrupt Rating200 kA
DC Interrupt Rating100 kA
Frequency Rating50/60 Hz
Body MaterialGMG
Body StyleCylindrical
Fuse ClassJ
Compatible Fuse Block6631J;6633J
Mounting TypeClip;Bolt
Terminal MaterialBrass
Terminal TypeBlade
Bolt Hole Center-to-Center Distance6 in
Bolt Hole Width17/32 in
Bolt Hole Length11/16 in
Visual Indication (Yes/No)Yes
Diameter2.5 in
Length8 in
ApplicationMotor Circuit;Main;Feeder;Branch Circuit;General Load;Transformer;Control Panel;Circuit Breaker Back-Up;Bus Duct;Load Center
CertificationsUL Listed;DC Tested to UL Standard 248
Weight3.02 lb
Package Quantity1 Piece

Technical Documents

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