Other than the physical size and cost*, is there any other reason to choose between a unit with a main switch +RCBOs and a unit with main switch +RCD +MCBs?
Need to fit a consumer unit in a small space and very restricted on the length (though depth and height not a problem).
*Only needs to have 1*6A, 1*32A and 1*40A, so the cost issue of RCBOs vs MCBs isn't important.