Another consumer unit question. Moving.

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RCCB - residual current circuit breaker - earth leakage only - double pole device that covers several circuits with MCBs.
RCBO - residual current breaker with over current protection - earth leakage and overcurrent.

Both are RCDs - residual current devices.

MCB - miniature circuit breaker - overcurrent only.
 
RCCB - residual current circuit breaker - earth leakage only - double pole device that covers several circuits with MCBs.
RCBO - residual current breaker with over current protection - earth leakage and overcurrent.

Both are RCDs - residual current devices.

MCB - miniature circuit breaker - overcurrent only.


Thanks for this. You learn something knew everything they say. Which ones do I have then on my unit.
 
Ignore - Mistakes - see below.

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