Profile: Twinsource, LLC is a manufacturer of rack mount transfer switches and dual cord conversion devices. Our electromechanical type automatic transfer switch minimizes the contact failures and cross connections due to contact arcing and pitting. Our single cord loads converts all single corded racks to dual cord, that enables continuity of operations. Our automatic transfer switch is an enclosure for larger applications that use motorized wiping blade type, circuit breaker or contactor type transfer devices.