Abstract: To avoid the disadvantages of additionally required space, unwanted crosstalk and deterioration in transmission properties that are concomitant with a separate transformer, a plug connector is proposed, comprising: a plug base with terminal contacts for external contacting of the plug connector, base-side connection contacts, and a transformer unit for galvanic separation in a conductive path between the terminal contacts and the base-side connection contacts and a plug body with plug contacts, the plug base and the plug body enclosing a contact element for connecting the base-side connection contacts to the plug contacts and the contact element being planar in a plane perpendicular to a plug-in direction of the plug body. A shielding element for the plug connector is also proposed.