A4BQ1200 extends the Mersen A4BQ Series lineup with a 1200A rating. The electrical profile is 600V AC / 500V DC, with 200kA AC / 100kA DC published interrupting performance. The series is intended for applications needing 4-second time delay at 500% rating and very high current limitation.
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At 1200A, A4BQ1200 is one of the rated options available in Mersen’s A4BQ Series. The published rating combines 600V AC / 500V DC operation and 200kA AC / 100kA DC short-circuit capability. 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 UPS DC Links, Mains, Feeders. Check the official Mersen datasheet before final equipment coordination.
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