This component was inside an isolation transformer. It's obviously for limiting inrush current, but how does it work and what is inside?
I believe it's a relay of some sort, switching a resistor in series with the input or something like that. When voltage are applied to it's input i can hear the relay inside oscillating, so clearly somethings wrong. Makes me wonder how it triggers on the inrush current and why they didn't go for a NTC current limiter.
Thanks :)