Dual power automatic transfer switch automatically switches between normal power and reserve power. The switch prioritizes normal power. When normal power is available, the switch connects to normal power. When normal power is lost and reserve power is available, the switch transfers to reserve power. This device does not start or stop the generator. Set the switch to Automatic mode to enable automatic transfer between power sources. Set to Manual mode to operate the switch direction manually. This automatic transfer switch is a terminal-type device designed for dual power supply systems. It is suitable for 3-phase 4-wire or 1-phase 2-wire AC 50/60Hz systems with a rated voltage of 230V and a maximum current of 63A. It automatically transfers connected load circuits from one power source to another in case of power failure, based on monitoring of Phase A voltage from both sources, including detection of voltage loss or phase loss, ensuring continuous power supply to connected loads. Rated voltage: AC 230V 50/60Hz Note: Power interruption occurs during switching. Maximum current: 63A Color: Grey, Black, Blue Material: PC plastic Package includes: 1 x Automatic Transfer Switch Note: Other items not included. Lighting and display differences may cause slight color variations between image and actual product. Measurement may vary by +/- 1-3 cm.