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AJT - Class J - Time-delay

Approvals & Standards
AJT (1-600):
UL listed to standard 248-8 File E2137
DC listed to UL standard 248
CSA certified to standard C22.2 No. 248.8
IEC 60269-2-1
AJT (70-600) EI:
UL listed
DC tested to UL standard 248

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 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.

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 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.

Key features & benefits

  • Non-indicating or 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

Applications

  • Motor circuits

  • Mains

  • Feeders

  • Branch circuits

  • Lighting, heating & general loads

  • Transformers

  • Control panels

  • Circuit breaker back-up

  • Bus duct

  • Load centers

Technical Specifications
Frequency (Hz) 50/60 Hz
Amperage Range 1 to 600 A
Fuse Class Class J
Speed/Characteristic Time Delay
UL Category Code JDDZ

Reference Finder

103 references in this series

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Item number Ampere rating Fuse size Clearing I2t At Rated Voltage Indication System Product weight
AJT50N See product
 50A - - No 0.0757kg
AJT5N See product
 5A - - No 0.044kg
AJT6-1/4N See product
 6.25A - - No 0.044kg
AJT60 See product
 60A - - Yes 0.0757kg
AJT600 See product
 600A - - Yes 1.3698kg
AJT600EI See product
 600A - - Yes 1.3744kg
AJT600N See product
 600A - - No 1.3698kg
AJT60N See product
 60A - - No 0.0757kg
AJT6N See product
 6A - - No 0.044kg
AJT70 See product
 70A - - Yes 0.1093kg
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