Electrical plug-in connection for high-current vehicle applications, comprising a first coupling part - that has a first electrical contact element comprising a base region and a lateral region, the lateral region having at least one slot extending from the base region to an edge region of the lateral region opposite the base region, - that has an electrical cable which comprises an electrical conductor and insulation sheathing this conductor, an end region of the conductor which protrudes from the insulation being electrically conductively connected to the base region of the first contact element, and comprising a second coupling part - that has a second electrical contact element which has an outer lateral surface over which the lateral region of the first electrical contact element can be plugged, characterized in that the first coupling part - has an insulating sleeve which surrounds the lateral region of the first electrical contact element and has an outer lateral surface (9") and an inner lateral surface, the inner lateral surface being spaced apart from an outer lateral surface (2") of the lateral region of the electrical contact element, and - comprises a first housing which surrounds the base region of the first contact element and the outer lateral surface (9") of the insulating sleeve as well as a connection region of the electrical cable, and which is produced by overmolding with a plastics material, and - in that the second electrical contact element is surrounded by a second housing which, together with the second electrical contact element, forms an annular space into which the first housing can be inserted, or in that the first coupling part - has an insulating sleeve which surrounds the lateral region of the first electrical contact element and has an outer lateral surface (9") and an inner lateral surface, the inner lateral surface being spaced apart from an outer lateral surface (2") of the lateral region of the electrical contact element, and - comprises a first housing which surrounds the base region of the first contact element and the outer lateral surface (9") of the insulating sleeve as well as a connection region of the electrical cable, - in that the second electrical contact element is surrounded by a second housing which, together with the second electrical contact element, forms an annular space into which the first housing can be inserted, and - in that a securing clip is provided for fixing the first housing to the second housing. - that has a first electrical contact element comprising a base region and a lateral region, the lateral region having at least one slot extending from the base region to an edge region of the lateral region opposite the base region, - that has an electrical cable which comprises an electrical conductor and insulation sheathing this conductor, an end region of the conductor which protrudes from the insulation being electrically conductively connected to the base region of the first contact element, and comprising a second coupling part - that has a second electrical contact element which has an outer lateral surface over which the lateral region of the first electrical contact element can be plugged, - has an insulating sleeve which surrounds the lateral region of the first electrical contact element and has an outer lateral surface (9") and an inner lateral surface, the inner lateral surface being spaced apart from an outer lateral surface (2") of the lateral region of the electrical contact element, and - comprises a first housing which surrounds the base region of the first contact element and the outer lateral surface (9") of the insulating sleeve as well as a connection region of the electrical cable, and which is produced by overmolding with a plastics material, and - in that the second electrical contact element is surrounded by a second housing which, together with the second electrical contact element, forms an annular space into which the first housing can be inserted, - has an insulating sleeve which surrounds the lateral region of the first electrical contact element and has an outer lateral surface (9") and an inner lateral surface, the inner lateral surface being spaced apart from an outer lateral surface (2") of the lateral region of the electrical contact element, and - comprises a first housing which surrounds the base region of the first contact element and the outer lateral surface (9") of the insulating sleeve as well as a connection region of the electrical cable, - in that the second electrical contact element is surrounded by a second housing which, together with the second electrical contact element, forms an annular space into which the first housing can be inserted, and - in that a securing clip is provided for fixing the first housing to the second housing.