Operating mechanism of circuit breaker

An operating mechanism of a circuit breaker, comprising:

• a moving contact bracket, a moving contact assembly and a reset torsion spring;
• wherein,
• the moving contact bracket is provided with a rotating shaft, and the moving contact bracket is allowed to be rotated around the rotating shaft;
• a first end of the reset torsion spring is arranged on a base of the circuit breaker, and a second end of the reset torsion spring is arranged on the moving contact assembly;
• the moving contact assembly is rotatably arranged on the moving contact bracket, and the moving contact bracket is provided with a limiting portion, so that in a closing process of the circuit breaker, the moving contact assembly is pressed against the limiting portion and rotated synchronously with the moving contact bracket, and the reset torsion spring applies a force rotated towards a disconnection direction of the circuit breaker to the moving contact bracket;
• and
• while the circuit breaker is closed, the moving contact assembly and the moving contact bracket are rotated relatively, and the reset torsion spring applies a contact pressure to the moving contact assembly.