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For the typical UK case where N is very much at a low potential to E by design and installation verification, then no.
They seem to bo common in the EU where they have TT as the norm and perhaps traditionally did not have N as near Earth potential. Either as historically it was more like a split-phase supply taking 2 of a 3-phase line set, or for whatever reason they demanded over-current protection on the N side.
The "neutral switching" 1P+N RCBO you see here will detect and isolate an earth fault that happens via the N side, but they do not detect over-current on that side as that is not a UK requirement going back a long, long way. Even when the 13A plug design was introduced in the 40s it was line-side fuse only as installations could be trusted to have N approx E in potential.
Are those double module RCBOs providing over-current protection on N? The reason I ask is that Hagar market them as 1P+N, rather than DP, which is the same terminology used in the single module RCBOs we see.
I know my questions probably seem incredibly stupid, but it seemed like a good time to ask. What I'm driving at is whether or not 1P+N single modules would provide adequate protection in other European countries or if I'm missing something about their operation?