Abstract: A device for a switching device, in particular for grounding switches for medium-voltage voltage switchgear assemblies, has a grounding device shaft in a stationary switch panel, which grounding device shaft can be operated manually, is connected by means of a drive mechanism, which transmits radial movement, to a drive coupling, which accommodates the radial movements, of the switch panel, and can be moved to the coupled state only in a permissible manner by means of a module shaft which is mounted in a movable switching module such that it can rotate. The locked state is indicated by the axial movement of the module shaft beyond the contour of the switching module. In order to operate the disconnector contact when it is coupled, the switching module is locked to the switch panel by the disconnector shaft.

Abstract: A locking device (6) which is provided in particular for vacuum contactors prevents an unintentional closing of the contact due to arbitrary mechanical influence as long as the electromagnetic actuator (1) is not excited. This takes place by means of a blocking lever (10), which is adjustably attached to a bearing block (7) between both of the parallel-mounted coils (3) of the actuator (1). A particularly rapid response of the blocking lever (10) is achieved by means of an acute-angled blade that sticks out, which is designed as an extension of the midsection (17) of the U- or C-shaped principal body of the blocking lever (10).