The invention relates to a terminal block for data and telecommunications systems, comprising at least one insulating body. At least one connecting element (8), designed to house a grounding clip (9), is configured on the underside of said body. According to the invention, the grounding clip (9) has a first detent geometry for connecting to the connecting element (8) and a second detent geometry for connecting to a mounting frame. The connecting element (8) has a geometry that is independent of the mounting frame, the first detent geometry of the grounding clip (9) is adapted to the geometry of the connecting element (8) and the second detent geometry is adapted to the mounting frame.