The utility model provides an universal type circuit breaker, pedestal bottom plate that includes the circuit breaker body with locate the operating device on the pedestal bottom plate, the inside phase partition who separates each extremely electrically conductive system that is equipped with of pedestal bottom plate, operating device includes the curb plate that both sides perpendicular to pedestal bottom plates set up, and operating device's both sides curb plate is connected with two adjacent phase partition respectively and is fixed, still includes support piece, support piece locates and supports fixed connection to the both sides curb plate between the upper end of operating device's both sides curb plate. The utility model discloses universal type circuit breaker, the last end support through the both sides curb plate at operating device sets up support piece, has solved the problem that the mechanism was out of shape when the circuit breaker bore short -circuit current, satisfies high short -circuit current to operating device's high strength requirement, and operating device's mounting structure is simple, and the installation is swift, improves operating device's installation intensity.