... to develop, The rated insulating voltage is 950V, Suitable for AC 50Hz(60Hz), rated working voltage 690V or below, ... back panel connection plug-in connection; 4, According to operation way: For direct handle operation for external rotary handle operating, formotor operating; 5, According ... closing and opening with the other three poles. 10, Type C: With overload release on N pole, which closing and ...