MCB or MCCB?

[LeeH]

So what is that test button on it for ?

It's for testing it silly!

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[LeeH]

Yes it is Lee, at a guess, minimum of 40m run mix of clipped direct and buried.

Swap it out for B80, and your just in when you less the 2O% for operating temp.

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[LeeH]

*you're.

It's worth noting if you used the figures on the NICEIC cheat sheet 0.43 you wouldn't comply. Using the manufacturers data you do. 0.57x0.8=0.456.