| 摘要 |
A safety switching device for a modular failsafe control system for switching on and safely switching off an electrical load, having at least one switching element which is subject to wear and is designed to carry out a switching process by means of a control signal which is generated by the control system, in order to switch the electrical load, comprising an apparatus for detection of the number of switching processes carried out and having a memory apparatus for permanent failsafe storage of the detected number.
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