Within its Mersen family, A4J90 is a Class J fast-acting current-limiting fuse; its primary electrical envelope is 90A, 600VAC / 300VDC, suited to feeders, panelboards and general high-fault-current circuits in a blade format.
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A4J90 belongs to Mersen’s A4J range and is configured as a Class J fast-acting current-limiting fuse for feeders, panelboards and general high-fault-current circuits. Electrical and mechanical selection centers on 90A, 600VAC / 300VDC, Class J current limitation with 200kA AC and 100kA DC interrupting ratings, and the blade format. Confirm installation details and coordination against the official Mersen datasheet before design release.
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