Cylindrical fuse A4J series
fast-actingcurrent-limitingClass J

Cylindrical fuse - A4J series - Mersen - Electrical Power - fast-acting / current-limiting / Class J
Cylindrical fuse - A4J series - Mersen - Electrical Power - fast-acting / current-limiting / Class J
Cylindrical fuse - A4J series - Mersen - Electrical Power - fast-acting / current-limiting / Class J - image - 2
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Characteristics

Configuration
cylindrical
Type
fast-acting, current-limiting
Class
Class J
Applications
for lighting, for distribution switchgear, capacitor
Amperage

Max.: 600 A

Min.: 1 A

Service temperature

Max.: 80 °C
(176 °F)

Min.: -25 °C
(-13 °F)

Description

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. 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 • Load centers • Panelboards • Switchboards • Bus duct • Feeder circuits • Lighting, heating, and general loads

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Exhibitions

Meet this supplier at the following exhibition(s):

Intersolar 2026
Intersolar 2026

23-25 Jun 2026 Munich (Germany) Hall B4 - Stand 480

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