Within the Mersen range, OT250 is a Class K5 fast-acting one-time fuse; its key ratings are 250A and 250VAC / 250VDC, suited to feeder, branch-circuit and resistive-load protection in a blade format.
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OT250 belongs to Mersen’s OT range and is configured as a Class K5 fast-acting one-time fuse for feeder, branch-circuit and resistive-load protection. Key selection data includes 250A, 250VAC / 250VDC, Class K5 fast-acting protection with a 50kA interrupting rating, and a blade installation format. Confirm installation details and coordination against the official Mersen datasheet before placing it into a design.
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