*Rated to start up to a ~10 hp 3 phase motor*, though I have started a 12 hp shaper with it and a few 9 hp motors no problem. *Not available immediately* Still in regular use and will likely need a ~2-3 week notice before it can leave my shop. I have used this phase converter in my small one person professional woodshop for the last 3 years. Kay MA-2-R-VS - 10 hp Rotary Phase Converter