LEISTUNGSSCHALTER

A circuit breaker has at least one pole arrangement with a movable contact. A twin-armed lever is pivotally mounted for opening and closing the movable contact. A switch-on energy storage device is provided and a cam disc that is coupled to the switch-on energy storage device and, via an actuating element, to a first end of the lever. The second end of the lever is connected to the movable contact piece of the pole arrangement. There is also provided at least one switch-off energy storage device. The circuit breaker has a simple and compact design. The actuating element is a switching shaft, which interacts with the cam disc, is mounted such that it can rotate and is connected to the first end of the twin-armed lever via the switch-off energy storage device.