Fuse Amp-Trap® 600V 300A Fast-Acting Class J A4J Series

Fuse Amp-Trap® 600V 300A Fast-Acting Class J A4J Series The Fuse Amp-Trap® A4J Series is a fast-acting Class J fuse designed to deliver excellent current-limiting protection across a broad range of electrical applications. Ideal for use by electrical distributors and switchgear suppliers, it supports load centers, panelboards, switchboards, bus ducts, feeder circuits, circuit breakers, and lighting, heating, and general loads. Its unique dimensions prevent substitution with lower-rated fuses, ensuring reliable protection and system integrity. Specifications Amperage Rating: 300 A Voltage Rating: 600 VAC, 300 VDC Interrupt Rating: 200 kA Fuse Class: Class J Dimensions (L x W x H): 7.13 in x 2.12 in x 2.12 in Mounting Type: Clip Connection: Blade Product Weight: 1.75 lbs Insulation Material: GMG Manufacturer Part #: A4J300 Features 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 Fast-acting with very current-limiting characteristics DC ratings available Downloads & Links Curves 1 Spec Sheet Drawings Curves 2 Spec Sheet FR