The Utility Automatic Transfer Switch is the ideal solution for transferring power from the Mains to a Standby supply with Generator Start/Stop signal. With Mains and Standby supply monitoring plus full electrical and mechanical interlocking you can be confident of switching supply under fault conditions at any time. Status LEDs are visible through the glazed front door. A 4 pole or (2 pole up to 125A) motorised changeover switch is used. Monitoring parameters are fixed but two adjustable ‘delay on changeover' timers are fitted. Conforms to IEC 60947-6-1.