OT45 combines Mersen engineering with a Class K5 fast-acting one-time fuse, with a 45A current rating and 250VAC / 250VDC, suited to feeder, branch-circuit and resistive-load protection in a cartridge / clip format.
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In feeder, branch-circuit and resistive-load protection designs, Mersen OT45 serves as a Class K5 fast-acting one-time fuse matched to the series architecture. The model carries a 45A rating with 250VAC / 250VDC; Class K5 fast-acting protection with a 50kA interrupting rating is paired with cartridge / clip mounting. Confirm installation details and coordination against the official Mersen datasheet before placing it into a design.
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