For engineering selection, Mersen MI5SA40V0.63 is a 400VAC 5×20mm medium time-lag semiconductor fuse, carrying 0.63A with a 400VAC system rating, optimized for semiconductor and electronic circuits with short-duration inrush in the cartridge / clip configuration.
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Mersen positions MI5SA40V0.63 in the 5SA family for semiconductor and electronic circuits with short-duration inrush, using a 400VAC 5×20mm medium time-lag semiconductor fuse format. 0.63A and 400VAC define the primary electrical envelope, while medium time-lag semiconductor protection and cartridge / clip describe protection and fit. Use the filter data together with Mersen source documentation to confirm electrical and physical compatibility.
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