The Mersen Amp-Trap® A4J60 is a 60-amp, Class J current-limiting fuse built for professional electricians and contractors who demand reliable, high-performance overcurrent protection on every job. Rated for 600 V AC / 300 V DC with an industry-leading 200/100 kA interrupting capacity, this fast-acting fuse limits peak let-through current to protect sensitive downstream equipment — from motor controls and variable frequency drives to panelboards and industrial disconnects. Its unique rejection-style ferrule design ensures it can only be installed in Class J fuseholders, eliminating dangerous misapplication in the field. The durable fibreglass body maintains dimensional stability in harsh industrial environments, while the easy-to-read imprint label speeds up identification and replacement during service calls. Tin-plated and silver-plated copper contacts ensure low resistance and long service life, making the A4J60 a dependable choice for North American power distribution applications.

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