Circuit breaker mounting structure

The utility model discloses a circuit breaker installation structure which comprises a circuit breaker body, a guide rail is fixedly installed on the outer surface of the circuit breaker body, a chassis frame is arranged below the circuit breaker body, a fixed notch is formed in the chassis frame, an adjusting screw rod is rotationally connected in the fixed notch, a movable frame is arranged in the fixed notch, and the movable frame is connected with the adjusting screw rod in a rotating mode. A threaded groove in threaded fit with the adjusting screw rod is formed in the movable frame, a connector is fixedly connected to one end of the adjusting screw rod, a movable notch is formed in the outer side of the chassis frame, a sliding groove communicated into the movable notch is formed in the fixed notch, and a sliding block in nested sliding fit with the sliding groove is fixedly connected to the movable frame. According to the utility model, the whole connecting structure is firm and stable in positioning, c