Glad to oblige...I'm glad things turned out the way they did (feeling very proud right now).
It would have to be a straight-rated 240V breaker, i.e. not slash-rated such as 120/240.
Not sure one is even manufactured.
[Time stamp makes it look like I'm being redundant rather than just concurring with AD. Fact is I pulled up the reply window prior to AD posting, had to leave my computer, but typed in my reply and posted when I returned without knowing AD already had it covered.]