From the hardware install guide at https://support.arubanetworks.com/Documentation/tabid/77/DMXModule/512/EntryId/8442/Default.aspx
So only the RAP-3WNP requires a separate country specific power cord.
From my memory, but I don't have a box laying around to check, the 12V power adapter for the RAP-3WN is indeed the block that you put in your power outlet and it comes with some clip-on adapters to fit the local power sockets physically. And the 'standard' AP-AC-UN will fit the RAP-3WN if you need a replacement.