This Mersen FES model, FESF400, provides 400A HRC-II Class C fast-acting fuse protection using 600V AC / 460V DC electrical ratings with 200kA AC / 40kA DC protection for short-circuit and motor-controller back-up protection, with FESF bolt-in blade construction.
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Mersen FESF400 is the 400A configuration in the FES range, using HRC-II Class C fast-acting fuse protection. For coordination work, use 600V AC / 460V DC as the voltage rating and 200kA AC / 40kA DC as the interrupt rating. Installation uses FESF bolt-in blade construction, while the series documentation cites IEC 269-2-1|BS 88 for compliance and selection.
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