Plug connector

A plug connector, comprising:

• a prong strip housing containing prong contacts;
• a multichambered socket housing having a plug contact side, electrical lines, contacts having edges connected to said electrical lines for plugging said plug contact side of said socket housing onto said prong strip housing in a given plug-in direction, resilient inner walls with distal detent hooks, and detent elements for securing said contacts inside said socket housing;
• a cup-shaped cover cap to be fitted and thrust onto said plug contact side of said socket housing orthogonally to said given plug-in direction, said cover cap having a contact region with openings formed therein;
• said cover cap having a T-shaped rib engaging between said resilient inner walls and pressing said resilient inner walls into recesses formed in said contacts for primary locking, and said rib having a T-shaped end piece engaging from behind said edges of said contacts;
• said prong strip housing having an annular wall to be fitted completely over said cover cap, said annular wall having an end surface to be disposed in an encompassing recess formed in said socket housing;
• and
• a snap-type connection having at least one outer hook on said prong strip housing and at least one opening formed in said socket housing, for locking said socket housing onto said prong strip housing and placing said prong contacts into electrical contact with said contacts.