Abstract: A plug connector module for a modular industrial plug has a connection side for connecting a conductor of a cable, in particular a multi-wire cable, and a contact side for electrically connecting to a mating plug connector module. Precisely one connection opening for a conductor of the cable is provided on the connection side, and at least two contact openings are provided on the contact side for accessing a mating plug connector module. The plug connector module has a bridge contact element which has precisely one connection region for an electric conductor, and the connection region is paired with the connection opening, wherein the bridge contact element has at least two contact regions for contacting a respective mating contact element of a mating plug connector module, and each contact region is paired with a contact opening.

Abstract: It is proposed to design a retaining frame (1) for retaining plug-in connector modules (40) in such a way that retaining means (41) of the plug-in connector modules (40) can be retained in recesses (11) of the retaining frame (1) in a play-free manner. To this end, the retaining frame (1) is designed in two pieces, wherein a slot (2/3) between the two retaining frame pieces (2/3) extends through the recesses (11). By under-sizing the recesses (11) in relation to the dimension of the retaining means (41) of plug-in connector modules (40), a press-fit of the retaining means (41) in the recesses (11) is effected by the assembly of the retaining frame parts (2, 3).