Circuit breaker

A circuit breaker, comprising:

• a circuit breaker body;
• a handle;
• a bottom box;
• a linkage component, the linkage component comprising linkage rod;
• a movable contact arm, the movable contact arm comprising a moving contact;
• and
• a static contact piece, the static contact piece comprising a stationary contact;
• wherein:
• the circuit breaker body comprises an upper cover, a notch groove is formed on the upper cover, and two ends of the notch groove are positioned in the on/off position corresponding to the circuit breaker;
• the handle extends out of the notch groove;
• a circuit breaker actuating mechanism, a wire inlet end, and a wire outlet end are arranged on the bottom box, and the circuit breaker actuating mechanism is triggered by the handle;
• the built-in circuit breaker further comprises a bearing plate;
• the bearing plate is arranged between the upper cover and the bottom box and combined with an electrical operating mechanism, the electrical operating mechanism is provided with an execution end and connected with the handle, and the handle is switched in the on/off state during the operation of the electrical operating mechanism under the control of an automatic closing control unit;
• the linkage component is connected to the handle;
• the movable contact arm is hinged at the linkage rod;
• and
• the static contact piece is connected to the wire outlet end;
• when in use,
• the handle drives the linkage component to rotate;
• the linkage component drives the movable contact arm to rotate;
• and
• the moving contact arm drives the moving contact to contact with the stationary contact.