Hi Folks

I've got a problem with over voltage surges taking out a switch mode PSU. I
don't know a lot about electronics but looking at catalogues VDR/Varistors
look like they could be my friend. Basically I'm looking for a simple way
of blowing the inline 5a fuse if the input voltage goes over 240V AC.

Cost is also an issue here. Anyone got any suggestions on what I should use
?

--
Colin Birch
http://www.railscans.co.uk