Plug connector having shock hazard protection

A plug-side first electrical plug connector has at least two flat electrical contact elements arranged in parallel extending in a housing of the connector in the insertion direction of the connector for accommodating socket-side second plug connector in the direction of an opening of the housing. A plastic tip is formed on one end of a contact region of the contact elements, and at least one dome-like shock hazard protection element is provided in the housing, extending in the insertion direction adjacent to the contact elements and protrudes beyond the contact region of the contact elements. The plug connector is suitable for a motor vehicle inverter to supply power to an auxiliary unit of the motor vehicle, and provides shock hazard protection of the contact elements for a human finger and/or reliable operating security is provided.