Patent ID: 7948391
Filing Date: 2011-05-24
Classification: H01H

Abstract:
1. A safety switching device for use in a safety circuit having a safety controller configured to interrupt the supply of power to an installation in a failsafe manner in response to receipt of an output signal from the safety switching device, the safety switching device comprising: a device housing having a plurality of terminals accessible on the outside of said housing including a first input terminal for receiving a fixed operating voltage and first and second output terminals for redundantly producing said output signal, the device housing accommodating: wherein the input of each of said first and second switching elements is connected internally within the device housing to said first input terminal for receiving the fixed operating voltage; and further wherein said safety switching device further comprises a third output terminal connected internally within said device housing directly to said first input terminal for supplying said fixed operating voltage in an unswitched manner directly to said third output terminal.