The invention proposes an electrical switch (10) comprising: - a horizontal bottom plate (12), the horizontal top face (12s) of which supports at least two electrical contacts (16); - a contactor (14) which is placed on the top face (12s) of the bottom plate (12) and which can be elastically deformed to electrically link the two electrical contacts (16); - a pushbutton (24) which is positioned vertically above the contactor (14) and which can be manually displaced downward to provoke the elastic deformation of the contactor (14); and - an elastic film (32) which consists of a elastic film protecting the contactor (14) which covers the contactor (14) and the pushbutton (24), which is fixed to the top face (12s) of the plate (12), so as to secure the contactor (14) vertically on the plate (12), and that the pushbutton (24) is secured on the top portion (14s) of the contactor (14), and in that the elastic film (32) is secured near the top portion (14s) of the contactor (14) and secured on the top section (24s) of the pushbutton (24).