Three-pole large-frame molded case circuit breaker equipped with solid-state electronic trip unit. It continuously samples phase current signals and executes multi-stage protection logic, including long-time overload, short-delay and instantaneous short-circuit protection. Built-in hardware self-diagnosis detects trip unit fault, and supports optional auxiliary alarm contact output. It can be used as incoming and feeder protection device for heavy-load equipment in industrial low voltage power distribution systems.

Certification: IEC, CE

Insulating molded housing, electronic trip module, silver alloy contact assembly, arc extinguishing chamber, mechanical operating mechanism and test terminal. Common faults: contact overheating, trip threshold drift, instantaneous false tripping and trip unit power damage.