A4BQ450 extends the Mersen A4BQ Series lineup with a 450A rating. Core electrical data includes 600V AC / 500V DC operation and 200kA AC / 100kA DC interruption. The series is intended for applications needing 4-second time delay at 500% rating and very high current limitation.
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At 450A, A4BQ450 is one of the rated options available in Mersen’s A4BQ Series. The circuit rating is 600V AC / 500V DC; published interrupting performance is 200kA AC / 100kA DC. A key selection characteristic is 4-second time delay at 500% rating and very high current limitation. The Class L format uses blade terminals with cartridge/clip mounting. Typical selection contexts include Feeders, Large Motors, Lighting & Heating. Check the official Mersen datasheet before final equipment coordination.
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