Molded case circuit breaker device

A molded case circuit breaker device, disclosed by the present invention, comprises a power board, a signal board, a main board, an electric mechanism, a handle and a housing; the power panel is used for converting an external power supply into a power supply with a preset voltage suitable for the circuit breaker; the signal board is used for detecting the real-time circuit information; the main board is used for judging whether a circuit abnormal condition exists in a target circuit or not based on a real-time circuit signal corresponding to the real-time circuit information, and determining an abnormal type when the circuit abnormal condition exists; the electric mechanism is used for assisting the fracture cut-off work of a circuit breaker switch when a tripping condition occurs, and assisting the fracture connection work of the circuit breaker switch according to the preset time corresponding to the tripping type; and the handle is used for assisting the operation and maintenance personnel in the fracture