I have had them shipped to a US address before and I don't think it will be an issue in the future. My main concern, later on, is the warranty. Will they honor it knowing it's installed in NA (North America)? Probably but that remains to be seen.
At the moment I don't see why not. Basically you would connect L1 and L2 to the N and L inputs of the inverter. The only issue is to make sure that there isn't any ground bond between N and PE internally in the inverter. Or if there is, remove it. I don't believe there is but I have to confirm this. Outside of that, an AT on the load output should take care of everything. You would only use a single CT on the input (L) though because L1 and L2 are carrying the load as a single circuit.