FIXING AND UNLOCKING MECHANISM FOR PLUG-IN TYPE CIRCUIT BREAKER

A fixing and unlocking mechanism for a plug-in type circuit breaker comprises a housing (1). A button (2) is mounted in a button slot (101) of the housing (1). The fixing and unlocking mechanism is characterized in that the housing (1) is provided with a locking mechanism (3) therein, so that the plug-in type circuit breaker cannot be unplugged from a mounting cabinet, and the housing (1) is further provided with an unlocking mechanism (4) therein, which can unlock the locking mechanism (3) to make the plug-in type circuit breaker is unplugged from the mounting cabinet. In the fixing and unlocking mechanism, by additionally arranging the fixing and unlocking mechanism in the circuit breaker, the circuit breaker is stably and smoothly mounted in the cabinet; by means of the housing, wires and other parts, the circuit breaker cannot be taken out from the cabinet; after the circuit breaker is disconnected, the button is outwards to unlock the circuit breaker from the cabinet, the button is continuously pulled to easily take the circuit breaker out from the cabinet, thereby improving the use safety performance of the circuit breaker.