High-current electrical connector and electrical connector system

A high-current plug connector (1, 1′) for installing and/or mounting in or on an electrical device and for mating with a mating plug connector (4) and for transmitting electrical energy to the mating plug connector (4), the high-current plug connector (1, 1′) comprising:

• an insulating body (14), which has a polarization element (146) for defining an alignment of the mating plug connector (4) on the insulating body (14) and a coding element (145) for preventing mismatings;
• and
• a plug contact (11) arranged in and/or on the insulating body (14) and having a plug-in region (116) and, opposite thereto, a connection region (117) with a screw thread (113),
• wherein the plug contact (11), by means of its screw thread, can be fixed on the electrical device and electrically contacted thereby, and
• wherein the insulating body (14) is at the same time held on the plug contact (11) such that it is rotatable about a plug contact axis (S) of the plug contact (11).