An electrical connecting device includes: a first connection element; a second connection element; and a body element. The first connection element is connected with a support element and the second connection element. The body element has a main extension plane, the main extension plane of the body element being positioned between the first connection element and the second connection element. The first connection element and/or the second connection element extend in a direction substantially orthogonal to the main extension plane of the body element. The body element includes a first mechanical fastening element and a second mechanical fastening element.