AC230V 63A 2P Automatic Transfer Switch Dual Power Changeover Switch for Electrical Equipments Item Type: Automatic Transfer Switch Model: LQ3-63 2P Material: PC Rated Voltage: 230V Coil Voltage: 220V Rated Current: 63A Frequency: 50/60Hz Specification: 2P Breaking Capacity: 35KA ATSE: Class CB Rated Current: 63ASize: Approx. 155 x 135 x 114mm / 6.1 x 5.3 x 4.5inWorking Principle: The dual power controller and drive mechanism of this series use AC220V power supply, and the power signal depends on the A phase and N line of the input port of the public switch or the standby switch. When the dual power supply is in the automatic state, when the voltage of input phase A and line N of the common switch is normal (AC190-240V), the common switch will be closed preferentially regardless of whether the voltage of public power supply B, C and standby switches A, B, C and N is normal. At the same time, the power indicator and the common closed indicator light are on. When there is no voltage on the incoming line A and N of the common switch, the input of the standby switch A and N is normal. No matter whether the voltage on the normal and standby switches B and C is normal, the dual power supply will be switched to the standby closed. The power indicator and standby closing indicator are on. Manual function, whether the common power supply and standby power supply have voltage or not, can adopt manual operation mode. During manual operation, the manual and automatic buttons shall be placed in the manual operation position. When the handle is rotated clockwise to the terminal, the standby power circuit breaker R is disconnected and the public power circuit breaker N is closed. When the handle is rotated counterclockwise to the terminal, the standby power circuit breaker R is closed and the public power circuit breaker N is disconnected.