For 800A circuit protection, A4BQ800-TA is a catalog member of Mersen’s A4BQ Series. For selection, note the 600V AC / 500V DC rating and 200kA AC / 100kA DC interrupting data. Its selection value is strongest where the circuit needs 4-second time delay at 500% rating and very high current limitation. This catalog code identifies the TA remote blown-fuse trigger actuator option.
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Part A4BQ800-TA belongs to the Mersen A4BQ Series and is rated 800A. For coordination, the key ratings are 600V AC / 500V DC and 200kA AC / 100kA DC interrupting performance. The series is engineered around 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. This SKU is the TA remote blown-fuse trigger actuator option. Final application limits and dimensional details should be verified against Mersen’s official datasheet.
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