Busbar contact-making means with bar thickness compensation for mechanical attachment and electrical contacting of an electrical apparatus in combination with a busbar having a first thickness or a busbar having a second thickness which is smaller than the first thickness, on which busbar the busbar contact-making means can be locked, with - a base body which comprises a base with an opening and, at a distance therefrom, arranged substantially parallel to the base, a counterpiece, wherein the separation distance is suitable for a busbar having the first thickness; - a contact element which sits at least partially in the opening of the base and which is exposed to force in the direction onto the counterpiece; - a spacer part which is suspended in a manner so it can be swiveled from a starting position on the counterpiece of the base body, wherein the swivel axis of the opening faces the base and which comprises a first eccentric lever and a second eccentric lever at a distance from said first eccentric lever; characterized in that the spacer assumes the initial position under spring load in a state that is not loaded by a busbar, wherein, in the initial position, both the first eccentric lever and also the second eccentric lever protrude into the gap between the base and the counterpiece, and the free lever edge of the first eccentric lever narrows the gap between base and counterpiece in such a manner that the clear width (l 1) of the gap is smaller than the first thickness (d 1) but larger than the second thickness (d 2), and the free lever edge of the second eccentric lever narrows the gap between base and counterpiece in such a manner that the clear width (l 2) of the gap is smaller than the second thickness (d 2), wherein the first eccentric lever is positioned in the slide-on direction onto a busbar in front of the second eccentric lever. - a base body which comprises a base with an opening and, at a distance therefrom, arranged substantially parallel to the base, a counterpiece, wherein the separation distance is suitable for a busbar having the first thickness; - a contact element which sits at least partially in the opening of the base and which is exposed to force in the direction onto the counterpiece; - a spacer part which is suspended in a manner so it can be swiveled from a starting position on the counterpiece of the base body, wherein the swivel axis of the opening faces the base and which comprises a first eccentric lever and a second eccentric lever at a distance from said first eccentric lever; characterized in that the spacer assumes the initial position under spring load in a state that is not loaded by a busbar, wherein, in the initial position, both the first eccentric lever and also the second eccentric lever protrude into the gap between the base and the counterpiece, and the free lever edge of the first eccentric lever narrows the gap between base and counterpiece in such a manner that the clear width (l 1) of the gap is smaller than the first thickness (d 1) but larger than the second thickness (d 2), and the free lever edge of the second eccentric lever narrows the gap between base and counterpiece in such a manner that the clear width (l 2) of the gap is smaller than the second thickness (d 2), wherein the first eccentric lever is positioned in the slide-on direction onto a busbar in front of the second eccentric lever.