Dual power automatic transfer switch selector electric changeover switch 400VAC 63A 4KA 1. Product structure: consists of 2 mini circuit breaker unit and accessories (auxiliary contact, alarm contact), mechanical locking gear, controller and other components.2. High efficiency: double power automatic transfer switch has the advantages of simple structure, small size, single motor drive, small impact, low noise and stable operation.3. Locking function: with mechanical locks and electric locking functions, can be switched according to reliability and supports manual or automatic power supply, high power.4. Clear indication: equipped with a user terminal that can reflect the status of the circuit breaker (open or closed). The panel has various indications that are clear and intuitive.5. Wide Application: Dual Power Automatic Transfer Switch has good interference isolation and is widely used in families, shopping malls, factories, laboratories, farms, etc. Specification: Item Type: Automatic Transfer Switch Model: SJCS Q1 63 4P Rated Current: 63A Rated Voltage: 400VAC Frequency: 50Hz Poles: 4P Rated impulse withstand voltage: 4KV Insulation voltage: 4000V Breaking capacity: 4KA ATSE level: CB level Working principle: The power supply signal of the dual power power supply controller and driving mechanism of this series depends on the A phase and N line of the input port of the common switch or standby switch. In the automatic state, when the A and N phase input voltage is normal (AC190-240V), the public switch will be closed first, regardless of whether the public supply voltage B. C and the backup switch abc and N are normal. At the same time, the power indicator and public shutdown indicator light up. When the incoming public switch A phase and N line have no voltage, and the incoming standby switch A phase and N line have normal voltage, whether the voltage of normal switch B and standby switch C is normal or not, the 2-way power supply is switched to standby mode. The power indicator and standby indicator are on. Manual function, whether the normal power supply and standby power supply have voltage, can use manual control mode. In case of manual control, the manual automatic button should be placed in the manual control position. Turn the push handle clockwise to the clamp, the standby power air switch R is open and the public power air switch N is closed. When the pusher handle rotates counterclockwise to the clamp, the standby power air switch R is closed and the public power air switch N is open. Package List: 1 x Automatic Transfer Switch