Miniature circuits breaker operating mechanism and miniature circuit breaker

A miniature circuit breaker operating mechanism, comprising:

• an operating handle, configured to realize opening and closing of a circuit breaker;
• a lock catch, configured to keep a moving contact of the circuit breaker in a closed state, and the operating handle and the lock catch being rotatably connected to a circuit breaker housing, respectively;
• a first connecting link, being rotationally connected to the circuit breaker housing, and wherein the first connecting link and the lock catch share and rotate around a same rotating shaft, the moving contact being arranged on the first connecting link;
• and
• a second connecting link, being connected with the operating handle, and being matched with the lock catch and the first connecting link to cooperate with a linkage structure,
• wherein when the operating handle is rotating to a closed position, the second connecting link is driving the lock catch and the first connecting link to rotate to realize closing, and
• wherein when the lock catch is tripped, a position limit of the moving contact and the first connecting link is released, so that the moving contact and the first connecting link are restored under action of a first elastic member.