Patent ID: 6998547

Claim:
A load changeover switch for a tap changer, wherein for each phase to be switched there are provided two fixed permanent main contact pairs which can be bridged over by a single movable electrically conductive permanent main contact pivotable into two different end settings, wherein in each phase to be switched a respective one of the two permanent contact pairs is bridged over in the stationary state and conducts the constant current, wherein each of the two permanent main contact pairs consists of a respective lower permanent main contact and a respective upper permanent main contact electrically insulated therefrom, wherein one lower permanent main contact is electrically connected with a side (A), and the other lower permanent main contact with a second side (B), of the load changeover switch, wherein the two upper permanent main contacts are electrically connected with a common load shunt of the load changeover switch, wherein the movable permanent main contact is disposed in constant electrical connection with the upper permanent main contacts, wherein the movable permanent main contact has in a region and on either side a respective contact surface in such manner that alternatively one of the two contact surfaces is disposed in electrical connection with a respective one of the lower permanent main contacts only in each of the two end settings, and wherein each of the lower permanent main contacts consists of a plurality of individual contact plates and each of the contact plates is resiliently articulated by means of a contact spring, the longitudinal axes of the contact springs at which the contact plates are respectively articulated extending in the same direction as the direction of impinging of the respective contact surface of the movable permanent main contact in such a manner that the direction of deflection of the contact plates and thus of the lower fixed permanent main contacts respectively corresponds with the direction of impinging of the movable permanent main contact.