The invention relates to a power-supply connector for shelves, comprising a bottom cover, a top cover disposed on the bottom cover, positive and negative power-supply contacts clamped between the bottom cover and the top cover, and a cable with one end extending into a holding cavity formed by the bottom cover and the top cover, wherein the cable is electrically connected with the positive and negative power-supply contacts. According to the invention the positive and negative power-supply contacts are respectively rotatably supported about a pivot center, so that when one of the two free ends of a respective power-supply contact moves in a direction away from the top cover in the corresponding through-hole the other of the two free ends of the respective power-supply contact moves in a direction closer to the top cover.