Wiring ring, stator and electric machine

An electric machine comprising a stator, the stator including:

• a stator body having a plurality of stator teeth, a plurality of stator windings which are arranged in stator grooves formed between the stator teeth, and an interconnection ring arranged on an axial end face of the stator, wherein the interconnection ring includes a housing having a plurality of groove-like recesses;
• and
• a plurality of busbars in the shape of a circular ring or circular ring segment arranged in the groove-like recesses, wherein the busbars establish an electrical contact between winding wire ends of the plurality of stator windings and contact connections of a power electronics unit for controlling the electric machine, wherein, in at least one of the busbars, the electrical contact to the contact connections of the power electronics unit includes a screw connection, wherein the screw connection includes a screw nut arranged loosely in a receiving space of a receptacle underneath a through-opening of the busbar connection region, and wherein the screw nut is movable in the receiving space along an x-axis, a y-axis and a z-axis.