Electric switching device with closed-circuit protection

Abstract

The invention relates to an electric switching device with a signalling element which triggers a switching function when the closed circuit is interrupted, a relay safety assembly being switched into the closed circuit. The incoming and outgoing electrical lines from the closed circuit to the signalling element are each surrounded by a safety shielding which is connected to the earth potential of the signalling element at one end and to the protective-conductor terminal of the relay safety assembly at the other end. The secondary circuit of the transformer in the relay safety assembly is connected to the safety shielding on one side.

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