Vacuum switching device having: a housing body that comprises an electrically insulating material; a spatially fixed electrical contact, which is arranged in a spatially fixed manner in relation to the housing body and within the housing body; and a movable electrical contact, which is arranged in a movable manner in relation to the housing body and within the housing body such that, when it is moved toward the spatially fixed electrical contact, it establishes electrical contact therewith and, when it is moved away from the spatially fixed electrical contact, it interrupts the electrical contact; wherein a sliding bearing that is connected to the housing body and supports the movable electrical contact in a sliding manner for the movement thereof toward and away from the spatially fixed electrical contact; wherein the sliding bearing comprises an electrically conductive material and at least partially electrically shields the housing body; and has a spring support that supports a spring element that presses the movable electrical contact in the direction toward the spatially fixed electrical contact, wherein the housing body, on one of its axial ends, has a flange that comprises an electrically conductive material, wherein the sliding bearing at least partially electrically shields the flange, wherein the sliding bearing has a tubular sliding section that is seated so as to slide coaxially on the shaft section of the movable electrical contact, and a shielding section that extends radially externally from the sliding section and at least partially electrically shields the flange of the housing body and characterized in that the shielding section of the sliding bearing has at least one slot extending in a spiral shape. a housing body that comprises an electrically insulating material; a spatially fixed electrical contact, which is arranged in a spatially fixed manner in relation to the housing body and within the housing body; and a movable electrical contact, which is arranged in a movable manner in relation to the housing body and within the housing body such that, when it is moved toward the spatially fixed electrical contact, it establishes electrical contact therewith and, when it is moved away from the spatially fixed electrical contact, it interrupts the electrical contact; wherein a sliding bearing that is connected to the housing body and supports the movable electrical contact in a sliding manner for the movement thereof toward and away from the spatially fixed electrical contact; wherein the sliding bearing comprises an electrically conductive material and at least partially electrically shields the housing body; and has a spring support that supports a spring element that presses the movable electrical contact in the direction toward the spatially fixed electrical contact, wherein the housing body, on one of its axial ends, has a flange that comprises an electrically conductive material, wherein the sliding bearing at least partially electrically shields the flange, wherein the sliding bearing has a tubular sliding section that is seated so as to slide coaxially on the shaft section of the movable electrical contact, and a shielding section that extends radially externally from the sliding section and at least partially electrically shields the flange of the housing body and characterized in that the shielding section of the sliding bearing has at least one slot extending in a spiral shape.