Patent ID: 8872050

Claim:
A circuit breaker, comprising: a movable contact and a fixed contact configured to open and close contact pieces of the movable and fixed contacts facing each other; a switch shaft; and a contact lever, rotationally mounted on or in the switch shaft and extending transversely to a longitudinal axis of the switch shaft, a free end of the contact lever, protruding from the switch shaft, carrying on one side of its outer contour the contact piece of the movable contact, and a same side of the rotational axle and an opposite side of the outer contour including a recess for suspension of a pin extending parallel to the switch shaft, each side of the contact lever including a spring configured to apply a force to the pin, each of the two springs applying a torque to the contact lever in a closing direction, each of the two springs including a cover element, each cover element extending along the respective spring and each cover element being arranged between a corresponding one of the two springs and an electric arc formed between the contact pieces, when the circuit breaker is opened, the cover elements of the two springs being connected to each other via a transverse element, the transverse element being clamped on the pin.