http://library.abb.com/GLOBAL/SCOT/scot235.nsf/VerityDisplay/3663BE35527D485185256B44006F3182/$File/AMVAC%20White%20Paper.pdf
The above should be of interest. I used the same method to build a bistable permenant magnet back in the early 80's. The document is copyrighted so I can't post a copy here.
If you have any experience with how much force is needed to operate one of these breakers you'll think about what is happening.
This is FYI so don't expect me to respond to this thread.