JQ3-□ M series dual power automatic transfer switch is composed of two three-pole or four-pole molded case circuit breakers and their accessories (auxiliary, alarm contacts), mechanical interlocking transmission mechanism, intelligent controller, etc. It is divided into two types: integral type and split type. The integral type is that the controller and the actuator are installed on the same base; the split type is that the controller is installed on the panel of the cabinet, and the actuator is installed on the base and installed in the cabinet by the user. cable connection.