ATS,auto transfer switch, control panel,switchgear 1.Cummins engine, Marathon alternator, Smartgen digital ... , 4 wires;1500/1800 rpm; 50/60hz5.One year warranty6.Ultra Silent or open frame.Auto control system, control panel,ATSbreaker ... floor mounted containercapacity from 50Ampere to 5000Ampere ATS (Auto Transfer Switch)