A switchgear device including a main unit supporting an operating mechanism, and at least one auxiliary unit, wherein the units each includes a rotary bar mounted in a mobile contact bridge for rotation around an axis of rotation, and two stationary contacts are connected with the mobile contact bridge. The operating mechanism moves a drive rod through an angular path which results in moving all of the mobile contact bridges between an open position and a closed position. A stop, against which the drive rod presses in the closed position, limits movement of the drive rod, and applies a rotational torque to the drive rod to keep it parallel to the axis of rotation.