... Motor Controller,Motor Protector,Circuit Breaker,Contactor,It constitutes controlling circuit of electrical motor with AC contactor and other switching apparatus. when abnormal ... main circuit of electrical motor, such as phase failure,overload,block,3-phase imbalance,leakage and so on. the motor ... . 4. Display type: Working state is indicated by LED5. Contact type: 1NO and 1NC(HHD5-G); 1NO (HHD5-1)6 ...