An electrical plug connector with a plug end surface which is provided for connecting the electrical plug connector to a mating plug connector includes an electrical contact for connecting an electrical conductor to the electrical plug connector. The plug connector includes a spring cage having a clamping spring acting as a pressure spring and a busbar contact region opposite the clamping spring. The plug connector further includes a single-part or multipart connection housing designed to accommodate the contact and to latch the clamping spring in a latching state in an open position. The latching and open position can be brought out of engagement by inserting the conductor. The plug connector further includes a release element which is provided for releasing the electrical conductor from the contact so that the conductor can be removed from the plug connector. The release element is integrated in the plug connector.