A fastening device for detachable holding of an electrical distributor (2) by latching, with a base plate (3) and with two latch mechanisms (4) which project vertically away from the base plate (3). Several openings (5, 5′) for holding screws (6) are formed in the base plate (3), with which the base plate (3) can be fastened to the wall or other support (7), and free ends of the latch mechanisms (4) each having an elastic catch arm (8) with a catch hook (9) and a rigid contact arm (10) opposite the catch arm (8). The fastening device enables an electrical distributor to be fastened quickly and easily, but still reliably, to a wall or other support, with the possibility of also quickly and easily detaching the distributor, as necessary, from the wall without removing the fastening device.