Yes, presuming you have some RCD protection in the downstream board
A switchfuse may be thought of as a 1-way CU with a fuse rather than a breaker. You have the main switch, then you have your protective device for your one outgoing circuit which is usually a submain to a dist board, which is where any required RCD protection would be fitted.
A switchfuse may be thought of as a 1-way CU with a fuse rather than a breaker. You have the main switch, then you have your protective device for your one outgoing circuit which is usually a submain to a dist board, which is where any required RCD protection would be fitted.