A socket for a high-current plug-in connection is provided, which includes a contact sleeve and a hollow cylindrical contacting system. The contacting system includes a plurality of elongated contact lamellae, is situated in an inner area of the contact sleeve, and is supported with at least a portion of its outer wall on the inner wall. The contact lamellae extend between a first collar and a second collar of the contacting system. The socket includes a contact lamella, in an area between the first collar and second collar, having an arm, via which the contact lamella is additionally connected to a collar of the contacting system in a supporting manner.