Contact assembly for an electrical plug-in connector having a heat capacity element arranged on a contact element

A contact assembly for an electrical plug-in connector includes: at least one contact element having a first end region for connection to a corresponding plug-in connector, and a second end region, which faces away from the first end region and for connection to a load line; a heat capacity element arrangeable on the at least one contact element at least in regions; and an insulating material arrangeable in a region between the heat capacity element and the at least one contact element for electrically isolating the heat capacity element from the at least one contact element.