Generac Smart Switch 400A Service Entrance Rated Automatic Transfer SwitchProduct Description 400A SERVICE ENTRANCE RATED AUTOMATIC TRANSFER SWITCHFeaturing a NEMA 3R aluminum enclosure and Heavy Duty Generac Contactor, this Service Entrance Rated 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. Product Feature Service Entrance RatedA