Abstract: Housing for attachment to an electrical flat conductor rail with a flat conductor receptacle extending in a first axis, a connecting conductor receptacle extending transversely to the first axis in a second axis, wherein the flat conductor receptacle and the connecting conductor receptacle are formed from a upper housing side and a lower housing side with in each case an inner side and an outer side, which, in the closed state of the housing, receive the flat conductor rail with their inner sides lying opposite one another, characterized in that a shield contact element is arranged on at least one inner side, the shield contact element, in the closed state of the housing, bearing directly against a shield conductor of the flat conductor rail.