Abstract: A rotary switch actuating mechanism for at least two control elements is provided, including at least one axial cam, parallel to the axis of rotation, which, in a given position of the rotary switch actuating mechanism, comes into direct engagement with one of the control elements through a transmission lever actuated by the cam in another position of the rotary switch actuating mechanism for acting on another control element.

Abstract: A switching and/or signalling apparatus is provided including a case formed of a base and a lid in which at least one manually or remote controlled switching unit is housed, particularly a contactor with an electro-thermal relay which is associated therewith, and the control members provided on the lid for actuating the switching unit, wherein, between the control unit and the side walls of the case, there is provided at least one fixed support element for at least one control element associated with the switching unit and actuated by the corresponding control member.

Abstract: A device is provided for the indexed fixing of a control unit on a hat shaped section, wherein, at least one auxiliary adjustment device formed of a tenon and a cavity, is disposed between the hat shaped section and the control unit, the mechanical cooperation of the two making it possible to fix the control unit in the longitudinal axis of the hat shaped section.