介绍了一种新型塑料外壳式断路器的过电流保护系统。
Introduction was made to a new kind of molded case circuit breaker over-current protection system.
介绍了一种新型塑壳断路器的过电流保护系统。
A new type of over current protection system of MCCB was Introduced.
电动机过载保护通常采用继电器，而配电线路过载保护多采用断路器的长延时过电流脱扣器来完成。
Protection against motor over - load usually adopt thermal relay, but protection against line over - load usually adopt long delay over- current release of circuit- breaker.
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