Abstract: The invention relates to a safety switch intended to be connected into a safety circuit for an industrial machine, for example an industrial robot. The switch comprises a contact device (2) with a hand-operated device (3, 4) in which a pressure rod (31) is displaceable against the action of a return spring (33) from a first end position via an operating position to a second end position, the safety circuit being closed only in the operating position. During the return movement of the pressure rod from its second to its first end position, the contact device (2) is not affected, and the safety circuit thus remains open during the whole of this return movement.

Abstract: An arrangement for distributing a cable assemblage between a stationary part and a part which is arranged for limited rotation relative to the stationary part, the cable assemblage comprising at least one power cable and at least one signal transmission cable. The arrangement includes a centrally located tubular element mounted on the stationary part and a housing which surrounds the tubular element and which is connected to the rotatable part. The signal transmission cable extends axially through the tubular element and is folded or deflected through about 90.degree., and extends out through an opening provided in the element and is then loosely wound helically for a number of turns around the outer surface of the tubular element. The cable then extends out through an opening in the surrounding housing and is again folded or deflected through 90.degree., so as to extend substantially axially along the outer surface of the housing.