Appliance having a temperature-monitored plug-in connection

An appliance to be connected to a power cable, the appliance comprising:

• a control unit having a first measurement input and a second measurement input;
• an appliance interface configured to form a plug-in connection with an appliance-side interface unit of the power cable;
• said appliance interface including at least one power contact part configured to form a power connection with a power contact part of the appliance-side interface unit to supply the appliance with electrical energy from an electrical supply grid;
• said appliance interface including a first thermoelectric element configured to make contact with a second thermoelectric element of the appliance-side interface unit when said power connection exists;
• said first thermoelectric element being coupled to said first measurement input of said control unit;
• said appliance interface including a measurement contact part configured to form a measurement connection between the second thermoelectric element and said second measurement input of said control unit with a measurement contact part of the appliance-side interface unit;
• and
• said control unit being configured to determine measurement data relating to a measurement voltage between said first measurement input and said second measurement input.