Plug connection system, and electrified motor vehicle with such a plug connection system

A plug connection system for a mechanical and electrical connection of flat conductors, in particular of a high voltage direct current connection in a battery electric motor vehicle, the plug connection system comprises:

• a plug part;
• and
• a socket part that includes two socket contacts arranged in parallel,
• wherein the plug part includes a housing through-feed for two parallel flat conductors arranged with flat sides of the two parallel flat conductors facing each other, and
• wherein the two parallel flat conductors in the plug part and the two socket contacts in the socket part are configured to be connected by parallel contact rails whose cross-section contour respectively corresponds to a cross-section contour of a flat conductor of the two parallel flat conductors.