Zero insertion force electrical connector piece

A zero insertion force electrical connector part includes a sleeve contact (socket contact) and an activation element associated with the sleeve contact. The sleeve contact has contact members with a plug contact receptacle situated between the contact members for receiving an electrical plug contact. Each contact member has a contact region. The activation element is enclosed around the contact members. The activation element is displaceable relative to the sleeve contact between non-activated and activated positions. The activation element applies a contact force to the contact members of the sleeve contact which forces the contact regions against a plug contact inserted into the plug contact receptacle of the sleeve contact to make contact with the plug contact while the activation element is in the activated position.