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Oct 3, 2023 at 12:21 comment added Amogam As far as I'm aware MCB is meant to trip when here's too much current flowing probably so much current is drawn as a result of short circuit or simply load is high .. I mean AC , water heater,Iron box etc. all are on the run and circuit is drawing much power and it trips.. RCD is when when some gets electrocuted.. it detects the incoming and outgoing current is not same so it trips... GFCI is meant for Groud Fault related things.. both are not same
Sep 19, 2023 at 17:28 vote accept Gnoupi
Sep 19, 2023 at 9:30 history edited Simon B CC BY-SA 4.0
Updated after comment below
Sep 19, 2023 at 5:58 comment added Daniël van den Berg Only after adding my answer did I realize GFCI and RCDBs are the same... perhaps see of you can add the word GFCI somewhere in your answer, I feel like more people are familiar with that than with RCDBs? Me, for one...
Sep 19, 2023 at 1:31 comment added nobody This should be the accepted answer.
Sep 19, 2023 at 1:01 comment added david eaton.com/au/en-gb/products/… "A residual current circuit breaker must be used in conjunction with a miniature circuit breaker (MCB)."
Sep 18, 2023 at 21:23 history answered Simon B CC BY-SA 4.0