On Tuesday, 25 February 2020 17:47:29 UTC, Marland wrote:
Is it normal for plug on end of flex type RCD to have a warm spot?

This one has been in the tripped position for some hours after a 10 second
power cut caused it to drop out and on going to reset it noticed the warm
spot. Not enough to worry just surprised there would be any current flowing
to produce any .
No neons or other lights on to warm it either.

GH

Check for loose connections & tighten. If nothing apparent or if there are visible burn marks, ditch it.

It can only get worse & may start a fire.