Removable electrical equipment module, wiring box for receiving such an equipment module and method for replacing such an equipment module

The invention concerns an electrical equipment module (130), to be inserted into a wiring box (110), comprising a housing (131) made of an insulating material and consisting of a side wall (132) closed at the front by a front wall (134) to define an inner space for receiving an electrical mechanism (140). According to the invention, the electrical equipment module comprises snap-fastening means (137) intended to hook on to the wiring box, which means comprise at least one hooking member (137A) movable between a retracted position in which it does not interfere with the insertion of the housing into said wiring box, and a projecting position in which it is intended to hook on directly to the wiring box, as well as means (137C) for controlling the snap-fastening means, that can be accessed from the front via an access opening (139) provided in said front wall, to bring back said hooking member to the retracted position thereof.