Dual RCD will have the board split in two (upstairs/downstairs) with an RCD on several circuits.
RCBO board with have individual RCBO's on certain circuits.
The RCBO board stops nuisance tripping from affecting other circuits but costs more due to having more than just two RCD's.
Thanks! No difference in safety, just convenience, then?
@lemonade started
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Dual RCD will have the board split in two (upstairs/downstairs) with an RCD on several circuits.
RCBO board with have individual RCBO's on certain circuits.
The RCBO board stops nuisance tripping from affecting other circuits but costs more due to having more than just two RCD's.