An electronic -operated safety switch comprises a switching device (2) adapted to be anchored to a fixed part of the protection and having a case (4) defining a longitudinal axis (X) and housing there inside switching means (5) adapted to be operatively connected to one or more control and/or service circuits of the plant, an operating device (3) adapted to be anchored to a movable part of the protection for engaging the switching means (5) upon the closing of the movable part. The switching device (2) comprises a head (8) housing there inside a locking mechanism (36) of the operating device (3) in the closing position, the head further having a first portion (8) provided with a centering hole (9) accessible by the locking mechanism (36) and a second portion (8) having sensor means (10) operatively coupled with the switching means (5) for modifying their operative condition in function of an inlet signal. The operating device (3) is adapted to send a proximity signal to be received by the sensor means (10) for controlling the switching means (5) and is also provided with a centering member ( 11) adapted to be introduced into the centering hole (9) for positioning the operating device (3) in correspondence of the head (8). The switching means (5) are of the electronic or electro mechanical type and comprise an actuator (39) operatively coupled with the locking mechanism (36) to operate on the same exclusively upon the receiving of the inlet signal. At least one between the first portion (8) and the second portion (8) of the head (8) is rotatably mounted on the case (4) for rotating about a same central axis (R) of said head (8) and modifying the orientation respectively of the centering hole (9) and/or of the sensor means (10) with respect of the case (4).
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