We (at least I) just don't know. In some senses, this could be a side effect of those who believe that OPDs exist only to protect cables. If those who write regulations and Standards, and those who design, manufacture and test accessories think that way, they may not even have considered this issue.If they cannot, then should it be considered that the 13A (or16A) is an absolute maximum current that it can handle.
I suppose the first thing (stillp??) would be to ascertain whether BS1363 has anything to say about the ability of plugs/sockets to withstand ('brief') fault and overload currents (i.e. in excess of the 'rated' value).
Again, as above, we (at least I) just don't know. Routinely replacing accessories after an OPD protecting the circuit would seem rather OTT, but what do you think?If so, how would that be ensured when faults occur - or should it always be replaced after such incidents?
Kind Regards, John