Mersen A4BQ300 provides a 300A rating within the A4BQ Series. The datasheet specifies 600V AC / 500V DC and 200kA AC / 100kA DC interrupting capability. The series is intended for applications needing 4-second time delay at 500% rating and very high current limitation.
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Designed within Mersen’s A4BQ Series, A4BQ300 carries a 300A rating and Class L form factor. Selection data centers on a 600V AC / 500V DC voltage rating and 200kA AC / 100kA DC interrupting rating. 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 Large Motors, Lighting & Heating, Circuit Breaker Backup. Check the official Mersen datasheet before final equipment coordination.
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