Ah I see. I know when I bought a bunch of my A2s last year - 2nd hand, they were setup for 240v and had to be manually switched to 120v on the PSU.
Wow! I wish I had those, as my 240v PDU's will only turn off half the circuit, so most PSU's autoselect back down to 110v and keep running - total pain. I've got a bunch of A2's from different periods, and haven't seen those power supplies - I wonder if whoever you bought them from had already replaced them?