This electromagnetic closing coil is matched with spring-operated vacuum circuit breaker. When energized by closing command signal, the electromagnetic force releases the pre-charged closing spring to complete circuit breaker closing action. It works with auxiliary switch for automatic cut-off after closing, preventing long-time energization burnout.

Certification: IEC, CE

Enameled wire winding, iron core, return spring, insulating framework and wiring terminal. Common faults: coil open circuit, insulation breakdown, core stuck, weak electromagnetic pull and terminal loose.