Within its Mersen family, A25X450-4 is a 250–300VAC high-speed semiconductor fuse, carrying 450A with a 250–300VAC system rating, intended for heavy-duty rectifiers and semiconductor converters and built around bolted blade mounting.
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A25X450-4 belongs to Mersen’s A25X range and is configured as a 250–300VAC high-speed semiconductor fuse for heavy-duty rectifiers and semiconductor converters. 450A and 250–300VAC define the primary electrical envelope, while low-I²t current-limiting semiconductor protection and bolted blade describe protection and fit. For replacement or new builds, compare the mounting details with the linked manufacturer documentation.
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