For 90A circuit protection, AJT90EI is a catalog member of Mersen’s AJT Series. The electrical profile is 600V AC / 500V DC, with 200kA AC / 100kA DC published interrupting performance. The series is intended for applications needing 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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Part AJT90EI belongs to the Mersen AJT Series and is rated 90A. The published rating combines 600V AC / 500V DC operation and 200kA AC / 100kA DC short-circuit capability. A key selection characteristic is 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. Check the official Mersen datasheet before final equipment coordination.
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