Abstract: An apparatus for an electric connection between a printed circuit board inserted into a receiving channel of a guide rail and a module rail carrying the guide rails of a component rack is disclosed. A sliding bow contact is aligned parallel to the inner walls of the first receiving channel of a guide rail into which the peripheral region of a printed circuit board in which region is located a ground conductor path is inserted. The sliding bow contact is secured to the guide rail. The sliding bow contact has at least one contact tip and at least one contact lug which are in electrical communication with the module rail and a divider strip insertable into a second receiving channel in the module rail.