A removable electric current switching element includes first and second housing parts fitted to the other and that can be moved between an assembled configuration and a partially disassembled configuration. The first housing part includes side walls provided with through inspection windows, the second housing part includes insulating walls which each delimit a volume in the second housing part around a corresponding mobile conductor. The first and second housing parts are arranged relative to one another in such a way that, in the assembled configuration the insulating walls mask the inspection windows and that, in the intermediate configuration the insulating walls are away from the inspection windows to free access to the inspection windows.