The locking element can have an unlocking section, in particular in the form of a bevel. The unlocking section (in particular the bevel) can be configured to interact with an associated unlocking section of the slider, in particular in the form of a bevel, in order to actuate the locking element in such a way that it is transferred from a locked position into an unlocked position.

The plug connector part can be plugged onto the mating plug connector part along a plug-in axis, for example, and in particular can be plugged onto or into the mating plug connector part, wherein the elastic element can be tensioned, for example compressed, in particular in a direction parallel to the plug-in axis.

Optionally, the elastic element takes the form of a spring, in particular a spiral spring. This allows a particularly simple and robust design. Alternatively, for example, a piece of rubber is also conceivable as a simple and robust elastic element. Furthermore, the plug connector part can comprise two or more elastic elements, in particular spiral springs, which can effectively prevent tilting.

The contact carrier can comprise one or more electrical contacts, for example two contacts for a direct current (DC) connection. Each of the electrical contacts is configured to contact an electrical contact of the mating plug connector. An additional electrical contact for a protective conductor (PE) can be firmly attached to the housing. In this case, the elastic element(s) can move all contacts of the contact carrier simultaneously in order to pull them off the mating plug connector part. Depending on the plug-in depth, a plurality of contacts can be separated simultaneously or sequentially. Despite a plurality of contacts, the plug connector part can have a particularly simple structure.