Abstract: The plunger of a latching control button is held in its retracted position by a latching ring which is rotatable about the axis of the system and releases the plunger when the control member is depressed.

Abstract: In a push-pull type latching control button, in particular a button for operating an electrical component, a main plunger of the control button is associated with an auxiliary plunger through which a shank of a control member can actuate the main plunger. Like the main plunger, the auxiliary plunger is releasably retained by a latching arrangement. An elastic spreader arrangement is provided between the main plunger and the auxiliary plunger. The elastic spreader arrangement also constitutes a return spring arrangement associated with the control member.

Abstract: The control member of a push-and-turn type latching control button is associated with a position indicator mobile between a retracted position which is its position when the control member is in an out position and a deployed position which is its position when said control member.

Abstract: The electrical apparatus, for example a switching device includes an enclosure (2), elements (62, 64, 66) for mounting it accordingly to at least two mounting methods, and connection blocks (8, 10) attached to the enclosure (2) and which can be moved in such a way that the screws (56) are accessible for clamping the connection wires (60) from the front or from the rear of the apparatus. The flexible hooking lugs (64, 66) which are used for the rail mounting (68) are secured by the connection blocks (8, 10) in their rear position. Moving the connection blocks (8, 10) ensures that the openings giving access to the unused clamping screws (68) are blocked out.

Abstract: A multipolar rotary switch, in particular a cam switch, is constituted by a stack of wafers with the contact elements and the connection elements being received in chambers lying between end walls and intermediate walls. The end walls and the intermediate walls are provided in the form of molded parts (16) of thermoplastic material and these parts are mechanically assembled to one another and are rigidly fixed together. The molded parts (16) have lugs (50) which, during assembly, overlap the sides of the adjacent molded parts and latch behind projections (62) provided thereon. After latching, the lugs (50) are welded to the side walls of the molded parts (16) in order to provide an assembly which is rigid.