YEM2(NS) series moulded case Circuit breaker which adopt international advanced design and manufacture technolgy is one of the most advanced type breaker in the world. They are suitable for short circuit and overload protection for circuit of AC 690V 50/60HZ,rated current from 12.5A to 630A.It takes protect effect when mouse cage motors non-frequent start, breaking off working and protecting overload,short circuit and under voltage.