The simplest circuit that I have seen to limit the inrush current into a highly inductive low resistance load is merely a mains relay or contactor and a low value resistor.
The relay is after the on switch, straight across the mains, and when it pulls in, it shorts out the resistor which is in series with the load.
The short time it takes for the relay to operate is enough for the magnetic field to become established.
Regards,
Clive
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