A joint connector for attaching a mounting rail butt at another mounting rail

The invention relates to a node connector (10) for connecting mounting rails (19, 20, 21) in the cross joint. The invention proposes to form the connecting node (10) having laterally projecting, U-shaped receptacles (16) into which the mounting rails (19) are inserted. A backup of the mounting rails (19) by means of a clamping device (34, 36) take place.