A60X70-4K is a Mersen A60X reference configured as a 70A aR high-speed semiconductor fuse specified for 600V AC duty and 200kA AC fault clearing for rectifier, traction and heavy-duty power-electronics protection, with Type 4K bolted-blade construction.
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A60X70-4K is engineered within Mersen’s A60X family as a 70A aR high-speed semiconductor fuse. Its published series ratings pair 600V AC service with 200kA AC circuit interruption. Installation uses Type 4K bolted-blade construction, while the series documentation cites UL JFHR2 for compliance and selection.
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