Contact monitoring device for a safety-critical triggering device of a switching device

摘要

The invention relates to a contact monitoring device for a safety-critical tripping device of a switching device, with a circuit diagram for a tripping device (5, 16) arranged on a first switching carrier medium (1, 12) and triggering electronics (4, 15) arranged on a second switching carrier medium (2, 13). . The invention is characterized in that the contact monitoring device has redundant electrical connections (3, 14) which are monitored in such a way that the failure of a redundant electrical connection (3, 14) is already recognized.