Space-saving actuator for a connection device and method for electrically connecting and subsequently disconnecting an electrical conductor to/from a busbar with a connection device

An actuator for actuating a cage tension spring of a connection device, wherein the actuator

• can be brought into a first open position, in which it tensions the cage tension spring and thus enables an electrical conductor to be guided through a window recess of a tensioning leg of the cage tension spring in a cable insertion direction and which furthermore
• can be brought into a closed position, in which the actuator comparatively relaxes the cage tension spring with respect to the aforementioned open position and thus allows the electrical conductor arranged in the window recess to be electrically contacted by the cage tension spring with a busbar likewise guided through the window recess and is mechanically fixed to the busbar, wherein the actuator can be transferred from the first open position into the closed position by a translational movement,
• wherein
• the actuator can furthermore be transferred from the closed position to a second open position by a rotational movement, in which it tensions the cage tension spring again relative to the closed position and thus enables the electrical conductor to be removed from the window recess of the tensioning leg of the cage tension spring counter to the cable insertion direction.