HA ! even if the breakers are symmetric and can be fitted both ways, it does not really mean it is a good idea to do so.
I'd suggest that to avoid mistakes of thinking things are off when they are on, then they should be turned to face the same way on any given side, outward is on seems to be the modern trend, as upward is on. The regs do require clear labeling of switchgear to avoid errors, and I;d put this in the same class.
I'd not be worried about a mix and match of MCB and RCBO particularly, or units of varying age, so long as they fit on the rail and connect well to the bus bar (as some makers seem to have changed their terminal reference plane between models so a good fit is not guaranteed) but I think user uncertainty about the on/off direction could quite easily cause an accident.
HA ! even if the breakers are symmetric and can be fitted both ways, it does not really mean it is a good idea to do so.
I'd suggest that to avoid mistakes of thinking things are off when they are on, then they should be turned to face the same way on any given side, outward is on seems to be the modern trend, as upward is on. The regs do require clear labeling of switchgear to avoid errors, and I;d put this in the same class.
I'd not be worried about a mix and match of MCB and RCBO particularly, or units of varying age, so long as they fit on the rail and connect well to the bus bar (as some makers seem to have changed their terminal reference plane between models so a good fit is not guaranteed) but I think user uncertainty about the on/off direction could quite easily cause an accident.
