Patent ID: 8147258

Claim:
An adapter for accommodating electrical installation devices and for fixing to a conductor rail system, comprising a housing which is made of plastics material and comprises an upper housing wall, said housing wall comprising units for mounting an electrical installation device said adapter further comprising feet for fixing to said conductor rail system by gripping and a first contact member for connecting said electrical installation device, wherein the first contact member is extending at least substantially within the housing, and the second contact member is electrically connected to said first contact member, for contacting a respective one of said conductor rails of said conductor rail system, said housing comprising a guide recess, said second contact member being provided so as to be displaceable along said guide recess within said housing, wherein the second contact member comprises a guide unit and catch units and wherein said housing is provided with catch recesses which are provided in predetermined catch positions of the housing, wherein said catch units of the second contact member can be brought into engagement with said catch recesses.