A plug receptacle is disclosed, comprising a receptacle housing having a passage configured to receive at least a part of a plug of a plug connector, a front side having a first opening and a top side having a second, elongated opening that intersects the first opening, the passage opening to the front side via the first opening and to the top side via the second opening. The plug receptacle also comprises at least one plug receptacle cover that is reversibly extendable between a cover position and an open position. In the cover position, the at least one plug receptacle cover covers the second opening at least partially. In the open position, at least a part of the at least one plug receptacle cover is extended outwards, so that the at least the part of the plug partially extends through the second opening.