Anti-rebound protection device and circuit breaker comprising the same

An anti-rebound protection device for a circuit breaker comprising an operating mechanism, the operating mechanism comprising a housing, a main shaft arranged in the housing, and an output lever connected to the main shaft;

• wherein the anti-rebound protection device comprises:
• a control cam configured to be connected to the main shaft so as to be driven to rotate during closing of the circuit breaker, and to remain stationary during opening of the circuit breaker;
• a control lever configured to be rotatable relative to the housing, and provided with a first stopper for abutting against the control cam;
• and
• a locking mechanism comprising a locking member configured to be rotatably connected to the output lever and a second stopper provided on the control lever,
• and wherein the locking mechanism is configured, during the opening of the circuit breaker, such that:
• a) the locking member is rotated relative to the output lever against the second stopper when the output lever is driven to rotate in a first direction, so as to allow the output lever to keep rotating in the first direction;
• b) rotation of the output lever in a second direction opposite to the first direction is limited by interference between the locking member and the second stopper.