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A4J - Class J - Fast-Acting

Approvals & Standards
UL listed to standard 248-8 File E2137
CSA certified to standard C22.2 no. 248.8
DC listed to UL 248
IEC 269-2-1

Amp-Trap fast-acting A4J fuses deliver excellent current-limiting protection to a wide variety of applications. Their unique dimensions prevent the substitution of other fuses with lower voltage ratings, interrupting ratings, or current-limiting capability.

Amp-Trap fast-acting A4J fuses deliver excellent current-limiting protection to a wide variety of applications. Their unique dimensions prevent the substitution of other fuses with lower voltage ratings, interrupting ratings, or current-limiting capability.

Key features & benefits

  • High current limitation for low peak let-thru current

  • Unique dimensions prevent replacement by other fuse classes

  • Fiberglass body provides dimensional stability in harsh industrial environments

  • Easy-to-read imprint label for quick recognition and replacement

Applications

  • Capacitors

  • Load centers

  • Panelboards

  • Switchboards

  • Bus duct

  • Feeder circuits

  • Circuit breakers

  • Lighting, heating, and general loads

Technical Specifications

Frequency (Hz) 50/60 Hz
Amperage Range 1 to 600 A
Fuse Class Class J
Speed/Characteristic Fast-Acting
UL Category Code JDDZ

Reference Finder

34 references in this series

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Item number Ampere rating Fuse size Clearing I2t At Rated Voltage Indication System Product weight
A4J40 See product
 40A - - No 0.0771kg
A4J400 See product
 400A - - No 0.7938kg
A4J45 See product
 45A - - No 0.0771kg
A4J450 See product
 450A - - No 1.3698kg
A4J50 See product
 50A - - No 0.0771kg
A4J500 See product
 500A - - No 1.3698kg
A4J6 See product
 6A - - No 0.044kg
A4J60 See product
 60A - - No 0.0771kg
A4J600 See product
 600A - - No 1.3698kg
A4J600EI See product
 600A - - Yes 1.4969kg
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