Abstract: A guide rail for electronic module supports has at each of the front and rear ends of the guide rail body a latching element for latchable connection with a respective transverse support member, and resilient latching heads or snap-in connector tabs which engage with correspondingly formed apertures in metal strips disposed in the transverse support members. In order to halve the distance between the guide rails to one another as determined by the apertures, there are provided between the latching arms of the latching elements correspondingly shaped separating or divider elements which are selectively insertable in the apertures or on the cross-pieces disposed between the apertures. For the latchable fastening of a connector on the inner rear surface of a rack there is further provided at the rear end of the guide rail body a securing element furnished with a plug.

Abstract: A modular assembly comprising a rack composed of side walls, two front and at least two rear transverse support members for the accommodation of one-tier or two-tier module supports. For the accommodation of the module supports which comprise at least one connector there are provided guide rails which are releasably attached to the transverse support members by means of resilient latching members. The guide rails each comprise securing means for attaching a connector by means of a plug. For securing two connectors there is provided in addition to the securing means of the guide rails a snap-on holder releasably attached to an intermediate transverse support member.