Abstract: An electrical module connecting arrangement includes a male lug projection integral with a first module and arranged for insertion within an opening contained in a second module, which opening includes an entrance portion having cross-sectional dimensions less than those of the lug projection, and an enlarged chamber portion of greater dimensions, thereby to define a transition wall surface. The male lug projection is formed from a suitable non-resilient compressible synthetic plastic material, such as a polyamide, that is so operable that a first section of the projection is compressed within the opening entrance portion, and a second section subsequently expands, after a delay, within the enlarged chamber portion and engages the transition wall, thereby to lock the two modules together.

Abstract: An electrical module connecting arrangement includes a male lug projection integral with a first module and arranged for insertion within an opening contained in a second module, which opening includes an entrance portion having cross-sectional dimensions less than those of the lug projection, and an enlarged chamber portion of greater dimensions, thereby to define a transition wall surface. The male lug projection is formed from a suitable non-resilient compressible synthetic plastic material, such as a polyamide, that is so operable that a first section of the projection is compressed within the opening entrance portion, and a second section subsequently expands, after a delay, within the enlarged chamber portion and engages the transition wall, thereby to lock the two modules together.

Abstract: A component housing for electrical and electronic circuits and components includes a frame constituting respective narrow sides of the housing at least one of which has a plurality of openings having different configurations in conformity with various connecting techniques to be used. Two lateral covering plates are arrestingly connected to the frame. A contact protection housing portion of an electrically insulating material extends over at least a partial region of the one narrow side of the frame and bounds a receiving space at the region of the one narrow side of the frame, especially for contact protected accommodation of lug-shaped connectors which extend upwardly beyond the one narrow side of the component housing. The contact protection housing portion has apertures that give access to those of the openings which are provided in the region of the one narrow side of the frame and is held in position by the lateral covering plates.