Straight change-over switch

The utility model relates to a multilevel shifting switch which are adopted in such equipment as a large-sized transformer. The utility model is characterized in that the left and the right sides are respectively provided with an insulating grillage and an insulating knife frame that are connected by a bridge. The middle of the bridge has axle holes, central axes are arranged between two axle holes, the insulating grillage is provided with a central charging row, and two central axes are movably matched with handle sleeves. One end of the sleeve is provided with a handle, and the other end is respectively provided with clamping blocks, insulating fixtures and knife row type movable contacts. The central charging row are connected with the movable contacts through cables, and one side of the insulating knife frame at the right side are homogeneously distributed with a plurality of stationary contacts.