Patent ID: 7714237

Claim:
Electrical apparatus which can be fixed to a supporting frame provided with a mounting window to receive said electrical apparatus, the electrical apparatus comprising: a main body having a substantially box-like shape; and first fixing elements provided on first and second opposite sides of said box-like main body to engage corresponding second fixing elements provided on said frame, said first fixing elements including: guiding fixing elements to allow axial and guided sliding of said electrical apparatus with respect to said frame in inserting said apparatus into said mounting window; and snap-in fixing elements to block said axial sliding of said electrical apparatus with respect to said frame once a predetermined snap-in position has been reached, wherein said supporting frame has a substantially frame-like body surrounding said mounting window and includes a pair of opposite fixing walls, said second fixing elements include a projecting element on said fixing walls, and said snap-in fixing elements include a flexible tooth having one end attached to said box-like main body and a second opposite free end suitable to engage, in said predetermined snap and lock position, with said projecting element.