A switching device is disclosed, in particular an electrical circuit breaker, including a housing and a switching unit disposed inside the housing. In at least one embodiment, the housing includes an openable housing cover with a switching opening through which a control lever head, which can be moved between an on-position and an off-position, of a control lever for switching the switching unit projects. The switching opening includes an opening contour and the control lever head includes an outer contour, which are aligned with one another such that the control lever head in the on-position prevents any movement of the housing cover via the control lever head, and in the off-position permits a movement of the housing cover via the control lever head.