Abstract: A device (1) is configured to supply a consumer, the position of which initially cannot be exactly determined but later can be substantially stationarily fixed, with energy from a stationary supplier. The device includes a movable carriage or slide (2) connected to an arm (3). The arm (3) is movable between first and second positions (7, 8) and includes at least one plug part (4) for connection to a consumer's energy supply line (5). The plug part (4) is connected to the supplier with an energy supply line (6). A cover part (9), which is movable with the movement of the arm, is arranged on the arm (3). In the arm's first position (7), the cover part at least partially covers the plug part (4), and in the arm's second position (8), the cover part exposes the plug part (4) for connection to the consumer's energy supply line (5).