Suitable RCCB replacent

[gazdkw82]

I need to replace this old RCCB with a suitable replacement.

Circuit Breaker Specialists

circuitbreakerspecialists.co.uk

Currently the one installed is not tripping on test and from the test point. Changing the entire consumer unit is not financially viable for the home owner at present so I would like to change this to at least reinstate RCD protection.

Any help would be appreciated

 

[suffolkspark]

It can occur if the N E fault is on a non rcd circuit in the same board, somebody once had a link to a diagram of how it occurs

 

[telectrix]

might be on a PME system, the N-E fault could case current to flow through E to MET and as this is strapped to N at the cut-out, backfeed through N to the RCD inhibit it from tripping. only a guess mind. as for above post. if i recall, it was a dual RCD board in one case and both RCD faied to trip.

 

[DefyG]

Dont expect something of that age to be cheap

Was quoted over £200 for a Sq D / Schneider replacement RCBO! .......It was cheaper to replace the board!