“MAT” Series Automatic Transfer Switch (ATS) provides the ability to transfer power to loads from Mains to Mains / Mains to Generator / Generator to Generator. ATS is a mechanically held device with high endurance that provides higher level of reliability in source switching. ATS monitors the incoming AC Mains power supply, starts the Stand-By Generator in the event of Mains power failure (blackout / brownout) and transfers the building load from the Mains to The Generator. When the Mains power supply returns, the ATS re-transfers building load from Generator to Mains power and shuts down the Generator after a set amount of cool-down period. Equipped with Microprocessor based controller that senses the source directly without the need for external auxiliary power. Sensing, Delay, Stabilization and Pre-Signal timers are adjustable through front display.