A plug connector set has first and second plug connector parts, an unlocking part and a plate. The first plug connector has at least one first contact element and a latching lug. The second plug connector part has at least one second contact element. An unlocking part is used to displace the latching lug out of a locking position into the unlocking position or for latching to the latching lug and locking the first and second plug connector part to each other. A plate is adjacent to the latching lug and projects away from the first plug connector part.