Generac 800A Non-Service Automatic Transfer Switch800A NON SERVICE AUTOMATIC TRANSFER SWITCH Featuring a NEMA 3R aluminum enclosure and Heavy Duty Generac Contactor, this 800 Amp Non service Entrance switch is designed for use with single phase generators. Using the integrated load management technology, four individual HVAC loads can be managed with no additional accessories required. This switch features a 5 year limited warranty. FEATURES Intelligent Load ManagementManage up to four HVAC loads