Electromechanical switching device and arrangement with several switching devices
AssigneeSiemens Aktiengesellschaft
InventorsFritz Pohl, Wilfried Jaehner
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AssigneeSiemens Aktiengesellschaft
InventorsFritz Pohl, Wilfried Jaehner
Estimating the term…
Switching devices can have means for contactless switching position detection. According to the invention, magnetic field sensors arranged at suitable locations inside and/or outside a device housing are provided for switching position detection. In particular, position-dependent magnetic fields are measured for ON/OFF position detection, overcurrent triggering, and contact welding; however, the magnetic field of the current flowing is detected to recognize short-circuit triggering. Differential Hall effect sensors and Reed contacts, respectively, can be used for these purposes. In addition, a sound sensor can be provided for detecting the switching noise, whose signal is evaluated together with the overcurrent triggering signal for short-circuit detection.
An electromagnetic switching device comprising:
An apparatus, comprising:
Dependencies are inferred from the claim text.