Wiring shore power connection to a Victron inverter

[Davidm]

I've got a 30A/250V shore power connection installed with the cable wired into an RCD in a consumer unit. It will go then from the consumer unit to a Victron Multiplus 12/500/20 inverter. I only have a 6amp and a 10 amp MCB in the consumer unit and wanted to keep the 10amp MCB for a plug socket used when on shore power. Is the 6amp MCB OK to use to wire up the Multiplus AC input?