| 摘要 |
A safety switching apparatus for safe disconnection of an electrical load in an automated installation has at least one input for connecting a signaling device. The safety switching apparatus has an evaluation and control unit and at least one switching element controlled by the evaluation and control unit in order to interrupt an electrical power supply path to the load. The switching element is a changeover switch having at least two mutually alternative switching paths, with a first switching path being located in the electrical power supply path to the load and with a second switching path leading to a monitoring unit.
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