A25X800-128 is a Mersen 250–300VAC high-speed semiconductor fuse, specified at 800A across a 250–300VAC rating, intended for heavy-duty rectifiers and semiconductor converters and built around cartridge / clip mounting.
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A25X800-128 is specified as a Mersen 250–300VAC high-speed semiconductor fuse for heavy-duty rectifiers and semiconductor converters. The configuration combines a 800A current rating, 250–300VAC, cartridge / clip mounting, and low-I²t current-limiting semiconductor protection. For replacement or new builds, compare the mounting details with the linked manufacturer documentation.
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