An element for coupling a lighting appliance to an electrified rail includes two separate components, the first of which exclusively provides the electrical connection to the electrified rail, and the second of which is mechanically separate from the first component and is of essentially of box form. In one embodiment, the second component includes a U-shaped bracket configured to clamp to the electrified rail from the outside, to support the lighting appliance, and to house electrical components, each lateral flange of the clamping bracket having an inner surface that is partially shaped to be complementary to the outer surface of the rail. The second component further includes a U-shaped bracket configured to interlink with the clamping bracket and to confine the volume defined by the clamping bracket that is not taken by the rail.