Device carrier made of galvanized, profiled sheet steel with zinc coating and combined with polyester resin paint ensures good corrosion protection. Tool-free fastening with two integrated twist locks. LED unit made of extruded aluminum profile, naturally anodized with plastic end faces. Suitable for fastening LED light guides. End faces made of plastic, all-round closed seal to the support rail. Direct, unshielded light distribution, LED diffuser cover made of polycarbonate. Heat-resistant cables including fixed 3-pin quick-assembly plug with tool-free phase preselection and search finger.