the utility model also relates to an arc extinguishing system which includes the arc extinguishing chamber and a miniature breaker which includes the arc extinguishing system.
本实用新型还涉及包括所述灭弧室的灭弧系统、以及包括所述灭弧系统的微型断路器。
a vacuum degree measuring instrument of a vacuum switch without the detachment of an arc extinguishing chamber belongs to the detection field.