Abstract: A power switch includes a vacuum interrupter held in a pole shell including a fixed contact and a moving contact, and a drive rod embodied in an electrically insulating fashion in order to apply a driving movement of a switch drive to the moving contact in order to open and close the contact system of the vacuum interrupter. Furthermore, a method is disclosed for avoiding incorrect orientations of the drive rod of such a power switch. A guide and/or centering element is proposed, connected to the drive rod and provided radially between the drive rod and the pole shell to bring about independent axial orientation of the drive rod in the pole shell.

Abstract: An electric circuit breaker including a spring energy store drive having a spring and a manual winding device for manually tensioning the spring. In accordance with an embodiment, the manual winding device includes a rotatable latching disk, a latching pawl arranged next to the disk, and a manual actuating device connected to the latching pawl. The latching pawl is guidable into a latching toothed portion of the disk. The pawl is also capable of moving, owing to an actuation of the actuating device. As a result, the disk is capable of rotating along a preset desired rotation direction for tensioning the spring. The latching toothed portion is asymmetrical and a force transmission from the pawl onto the disk is possible along the desired rotation direction. The disk slides along the pawl when the disk rotates along the desired rotation direction more quickly than the pawl.

Abstract: A connection piece is disclosed for a switch pole of a switching apparatus which improves the properties of the switch pole as concerns centering and current-carrying capacity. According to an embodiment of the invention, a connection piece for a switch pole of a switching apparatus is provided for connecting in electrically conductive manner to a movement contact connection pin of a vacuum switching tube disposed in the switch pole. The connection piece includes a centering ring for centering the vacuum switching tube, the centering ring being formed from an electrically conductive material and being connected in electrically conductive manner via at least one connector to a connection region of the connection piece.

Abstract: A power switch includes a vacuum interrupter held in a pole shell including a fixed contact and a moving contact, and a drive rod embodied in an electrically insulating fashion in order to apply a driving movement of a switch drive to the moving contact in order to open and close the contact system of the vacuum interrupter. Furthermore, a method is disclosed for avoiding incorrect orientations of the drive rod of such a power switch. A guide and/or centring element is proposed, connected to the drive rod and provided radially between the drive rod and the pole shell to bring about independent axial orientation of the drive rod in the pole shell.

Abstract: An electric circuit breaker including a spring energy store drive having a spring and a manual winding device for manually tensioning the spring. In accordance with an embodiment, the manual winding device includes a rotatable latching disk, a latching pawl arranged next to the disk, and a manual actuating device connected to the latching pawl. The latching pawl is guidable into a latching toothed portion of the disk. The pawl is also capable of moving, owing to an actuation of the actuating device. As a result, the disk is capable of rotating along a preset desired rotation direction for tensioning the spring. The latching toothed portion is asymmetrical and a force transmission from the pawl onto the disk is possible along the desired rotation direction. The disk slides along the pawl when the disk rotates along the desired rotation direction more quickly than the pawl.

Abstract: A connection piece is disclosed for a switch pole of a switching apparatus which improves the properties of the switch pole as concerns centering and current-carrying capacity. According to an embodiment of the invention, a connection piece for a switch pole of a switching apparatus is provided for connecting in electrically conductive manner to a movement contact connection pin of a vacuum switching tube disposed in the switch pole. The connection piece includes a centering ring for centering the vacuum switching tube, the centering ring being formed from an electrically conductive material and being connected in electrically conductive manner via at least one connector to a connection region of the connection piece.

Abstract: In order to form a locking mechanism for a switch-on button of a circuit breaker which has a simple and inexpensive configuration, the locking mechanism has a locking element which is mounted rotatably on the switch-on button. The locking element, held directly in a first position by a first spring, enables actuation of the switch-on button and, directly in the switched-on state of the circuit breaker by a second spring, can be moved into a second position. The switch-on button of the circuit breaker is locked to prevent actuation in the second position.

Abstract: In order to form a locking mechanism for a switch-on button of a circuit breaker which has a simple and inexpensive configuration, the locking mechanism has a locking element which is mounted rotatably on the switch-on button. The locking element, held directly in a first position by a first spring, enables actuation of the switch-on button and, directly in the switched-on state of the circuit breaker by a second spring, can be moved into a second position. The switch-on button of the circuit breaker is locked to prevent actuation in the second position.