Stator of an electric motor with a connection unit

The invention relates to a stator (1) of an electric motor, having a polyphase stator winding (5) having a first plurality of coils (5a) and a frontally arranged circular arc-shaped connection unit (2) for the coils (5a), wherein the connection unit (2) a second plurality of bus bars (12, 13, 14) each having a third number of winding and / or contact elements (7, 8) for the coil (5a), and wherein the winding and / or contact elements (7, 8 ) are joined as a separate punching members (12b, 13b, 14b) (with a die strip (12a, 13a, 14a) to form the respective bus bar 12, 13, 14).