The invention relates to an electrical high-current contact element essentially comprising a basic contact element made of metal exhibiting good conductivity and a steel spring, which is incorporated into a plug connector housing for the mounting of a high-current plug connector. The steel spring comprises two spring arms at a distance from one another, which are connected to one another by means of a U spring arm base. The contact arm is arranged in a manner reaching through the spring arm base between the spring arm and the spring arm. The high-current mating contact element is inserted into the mouthlike plug-in opening during the production of the plug connection, functional parts at plug connector housing and high-current mating plug connector opening the two spring arms and thus also the plug-in opening. In order to produce a high-current plug connection, the high-current plug connector is to be plugged into a high-current mating plug connector according to the invention with a high-current mating contact element.