Safety switch for guarding accesses

A safety switch for guarding access to industrial machines and plants, comprising:

• a switching device (2) adapted to be anchored to a fixed part of the access to be guarded and housing switching means for the control of one or more control and/or service circuits of the machine or plant;
• a driving device (3) adapted to be anchored to the movable part of the access and to interact with said switching means upon the opening/closing the access for opening/closing one or more circuits;
• signaling means comprising one or more sources of light signals adapted to emit one or more light and/or visible signals representative of the state of said one or more circuits;
• wherein said switching device (2) has at least one portion or cap (6) made of a transparent or translucent material which encloses one or more of said sources of light signals to make them visible from the outside at least in the powered condition,
• wherein said portion or cap (6) made of transparent or translucent material extends at least partially on at least two faces of said switching device (2), to be visible from at least two sides with respect to said switching device (2) when in the anchored position,
• wherein said switching device (2) comprises a casing (4) housing thereinside switching means for controlling one or more control and/or service circuits of the machine or plant, and
• wherein said portion or cap (6) is arranged at an end face of said casing (4).