In an embodiment, the present invention provides a plug connector part for connection to a mating plug connector part, including a plurality of electrical contact elements for carrying an electrical current and establishing electrical contact with contact elements of a mating plug connector part, the plurality of electrical contact elements including a plurality of temperature sensors, each of which is arranged on one associated contact element, respectively, of the plurality of contact elements, to detect a change in a temperature of the associated contact element, the temperature sensors being connected to a common sensor line.