A module connector for batteries includes two connecting parts that can be electrically conductively connected to one another. The first connecting part has a first conductor element and a first contact element. The second connecting part has a second conductor element and a second contact element. The two connecting parts can be connected to one another via a common fastening element. When the two connecting parts are not connected to one another, an intermediate space is formed in the first connecting part between the fastening element and the first contact element. When the two connecting parts are not connected to one another, the fastening element is arranged in a park position and a separating element for electrically insulating the fastening element is arranged in the intermediate space between the fastening element and the first contact element and the first conductor element. The separating element has a sleeve shape.