Circuit breaker comprising an improved linkage mechanism

A circuit breaker comprising a movable contact slidingly mounted in the circuit breaker along a main axis of the circuit breaker and comprising at least one driving rod slidably mounted in the circuit breaker along the main axis,

• a linkage mechanism for driving the movable contact, comprising:
• a pivoted driving fork rotatably mounted in the circuit breaker along a secondary axis perpendicular to the main axis, which driving fork cooperates with the driving rod through a cooperation of a primary pin provided on the driving rod and a primary slot provided on the driving fork,
• a driven lever connecting the driving fork to the movable contact,
• wherein the driving rod supports a secondary pin which cooperates with a secondary slot of the driving fork when the driving rod is in a position between a predetermined position, in which the movable contact is disconnected from an associated contact and an extreme opened position of the circuit breaker,
• wherein the secondary pin is slidably mounted on the driving rod,
• wherein the linkage mechanism is designed to drive the movable contact in displacement from a beginning of an opening step of the circuit breaker until the movable contact reaches a predefined position located beyond a separation position, and
• wherein the movable contact remains stationary in the circuit breaker after having reached the predefined position.