Within the Mersen AJT Series, AJT250EI is configured for 250A. Published electrical limits are 600V AC / 500V DC with 200kA AC / 100kA DC short-circuit capability. This makes it suitable where high current limitation with time-delay performance for motor and transformer inrush. This catalog code identifies the EI visual/open-fuse indication configuration.
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Mersen lists AJT250EI in the AJT Series as a 250A circuit-protection device. Its electrical envelope is 600V AC / 500V DC, supported by 200kA AC / 100kA DC interrupting data. The protection profile emphasizes high current limitation with time-delay performance for motor and transformer inrush. The Class J format uses ferrule / blade (amp-dependent) terminals with cartridge/clip mounting. Typical selection contexts include Transformers, Control Panels, Motor Circuits. This SKU is the EI visual/open-fuse indication configuration. Use the official Mersen datasheet to confirm final coordination and dimensions.
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