The plug connector part 2 comprises a housing 20 and a contact carrier 21 having a plurality of electrical contacts 210. The plug connector part 2 can be plugged into the mating plug connector part 3 in one direction along a plug-in axis S and can be pulled off in the opposite direction (see FIG. 1). In the present case, the mating plug connector part 3 can be mounted in a housing wall, which, however, is only an exemplary embodiment.

The contact carrier 21 of the plug connector part 2 comprises a plurality of contact pins 211, which can be plugged into contact receptacles 30 of the mating plug connector part 3. Electrical contacts 31, here in the form of a pin, are arranged in the contact receptacles 30 in order to be electrically contacted by the corresponding electrical contacts 210 of the plug connector part 2. In the present case, the plug connector part 2 and the mating plug connector part 3 each comprise three electrical contacts 31, wherein specifically two contacts are respectively provided for a DC connection. In the present case, the contact carrier 21 is a load contact carrier. A protective conductor contact 213, shown in FIG. 2 below the other two electrical contacts, in the case of the plug connector part 2, as in the example shown, can be firmly attached to the housing 20 or alternatively can be formed with on the contact carrier 21.