Schneider Electrics RCBO

[carlyai]

What is the function of Nin?

Sorry if this has been covered before, but I can't access the TV database.

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[Wirejerker]

A normal single pole circuit breaker operates on over current so it only requires to measure current in the active conductor..Your RCBO operates on over current plus out of balance or leakage current so it checks the current active going out matches the current returning in the neutral. Nin is the fly lead which you connect to the neutral bar and the circuit you are protecting is connected to Lout and Nout

 

cheers

[carlyai]

You should read Nin as "N in" (so the connection where the Neutral wire goes in).
 
 

Thanks Arjen. Simple, '...with a little help from my friends'.

I was thinking about the inbalance of current in the load/neutral and not 'N in'. deeerrr.

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