The MLQ6 Series 4P Automatic Transfer Switch is available in three ratings：160A, 250A, 400A and 630A， designed for dual-power-source systems. It continuously monitors both the primary and backup power sources and automatically switches to the backup power source in the event of a primary power failure. Manual operation is performed using a dedicated key, and the unit features a mechanical interlock to prevent simultaneous output from both power sources, ensuring power supply safety.
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