"chris French" wrote in message
...
....
I can check out the MCB by swopping it with others in the CU I guess, if
it is faulty then I'm not sure if replacing it is going to be a problem or
not.

The CU is a pretty old Crabtree one, you can see a couple of piccies he

http://galoka.adsl24.co.uk/temp/IMG_0085.jpg
http://galoka.adsl24.co.uk/temp/IMG_0088.jpg

Does anyone know if I will be able to find something to fit?

They look the same type as used in a couple of my factory distribution
boards and they haven't been available for the past ten years.

Colin Bignell