Check import prices/shipping and then got to your wholesaler and see what the cost is for them to order the parts?I buy all my car parts and a ton of electrical from the states with no hassle a the border what so ever.FPE/Square D have the same mother company over here(Schneider) so any wholesaler who has one will have the other.I doubt you will be able to get them without paying the import tax etc anyways.Our dollar is around 80 cents US right now so...
Be sure they are accepted under UL before hand since Canadian build specs are slightly different.Ask if each breaker carries a UL marking which I'm sure it will.I'm in Windsor Ontario 1/4 mile south of Detroit and can hook you up with a wholesaler if you like.Why do you need Canadian made breakers.
cheers