Dualpower automatic transfer switch, 4pole 63A, blue and gray. Designed to keep critical circuits powered during utility interruptions by switching between common and standby power automatically or manually. Key benefits Fast transfer to reduce downtime: automatic switching in about 2 seconds helps maintain continuity for sensitive loads. Reliable conductivity and durability: grade plastic housing combined with pure copper motor and copper terminals for stable electrical performance and resistance to heat and corrosion. Builtin protection features: shortcircuit and overload protection plus phaseloss and undervoltage detection protect connected equipment and the switch during abnormal conditions. Internal circuit breaker includes an arcextinguishing cover to reduce contact damage. Flexible operation and monitoring: automatic and manual modes with clear indicator lights for straightforward status monitoring and control. Compact and adaptable installation: wallmountable horizontally or vertically with predrilled M6 mounting holes, suitable for tight spaces and varied mounting orientations. What it does and why you need it Automatically transfers load from main power to standby power when voltage loss or phase anomalies occur, then restores to main power when conditions . This prevents interruptions to essential systems and reduces manual intervention. Protects electrical systems from overloads and short circuits while isolating arcs inside the breaker assembly, improving operational safety during switching events. Offers clear visual status and an option for manual control when planned switching or maintenance is required. Materials and performance highlights Shell material: grade plastic for impact and corrosion resistance. Conductive parts: pure copper components for lowresistance connections and reliable contact performance. Contact design: edged output contacts and ring cross actuator for stable mechanical switching. Switching speed: approximately 2 seconds. Designed for continuous operation with wearresistant components to extend service life. Common applications Backup power transfer for elevators and fire control systems where automatic switching is required for continuity. Automatic source transfer for office equipment, small server rooms, and residential backup systems using generators or alternative supplies. Industrial and mechanical installations such as ports, plants, and workshops that require fast, reliable switching and vibrationresistant mounting. Key specifications Number of poles: 4 Rated current: 63A Operating voltage: AC110V Rated voltage: AC240V Line current range: 6A to 63A Working frequency: 50Hz 60Hz Insulation voltage: AC690V Conversion mode: automatic transfer and selfrecovery Display: indicator light display Contact type: edged output contacts Circuit type: bidirectional Bore: M6 (6mm) Mounting hole distance: 8.11 in Base width: 4.92 in Product size: 8.82 x 5.31 x 3.94 in Net weight: 3.88 lbs Color: Blue and Gray Used level: AC33iB What you get 1 dual power automatic transfer switch 1 English manual Installation and use tips Can be mounted horizontally or vertically to fit site requirements. Use the provided M6 holes and sturdy mounting surface to minimize vibration. Verify wiring and voltage compatibility before commissioning. Use the manual mode for testing and maintenance, and monitor indicator lights during operation. This transfer switch combines fast automatic switching, solid materials, and practical protections to maintain reliable power for critical circuits in homes, commercial sites, and industrial installations.