Generac RE100A3 Generac 100-Amp 120/240-Volt Service Disconnect Transfer Switch (Discontinued by Manufacturer) 100 Amp 120/240-volt service disconnect transfer switch monitors utility power Signals generator to start when utility power is interrupted Powder-coated steel switch enclosures; silver-plated or silver alloy main contacts 160 millisecond transfer time when contactor is energized 1-year limited warranty