I found this component in parallel to a switch and 100nJ capacitor. My guess it that it is part of the de-bouncing circuit. Can somebody tell me what it is?
The blue disc has a diameter of about 8mm.
In case it helps:
- this was part of a 12V circuit.
- the mechanical switch may activate either a relay coil or a semiconductor switch
- the label reads to me like "HEL (weird 7-like symbol) D560K"