Feature: 1. STABLE STRUCTURE: Dynamic and static silver alloy contact greatly improve the electrical conductivity and service life of the product. Built in switch signal output port, can be connected to the signal indicator light, easy to observe outside the cabinet 2. SAFE AND FLAME RETARDANT MATERIAL: This automatic transfer switch is made of excellent flame retardant material, possess good insulation, high temperature resistant, aging resistant, safe and reliable 3. MILLISECONDS SWITCHING: Automatic transfer switch is very useful, when the normal power supply is abnormal, the backup power supply works immediately, ensure the continuity, reliability and safety of the power supply 4. 2 OPERATION MODES: Power transfer switch support automatic operation or manual operation, the power supply is switched in milliseconds without interruption, has compact structure, reliable transmission, widely used in various places where continuous power failure is not allowed 5. WIDE APPLICATION: Power transfer switch possess isolation interference resistant, self investment and self compound, widely used in families, shopping malls, factories, laboratories, farms and other occasion Specification: Item Type: Dual Power Automatic Transfer Switch Use: The power supply is transferred to the standby power supply in case of power failure, and the main power supply is transferred to the call Operating Frequency: 50/60HZ Rated Current: 63A Insulation Voltage: AC690V Number of Poles: 4P Rated Voltage: AC220V Rated Impulse Withstand Voltage: 8kV Operation Mode: Automatic and manual Conversion Time: <50ms. Package List: 1 x Dual Power Automatic Transfer Switch Note: 1. The maximum ambient temperature should not exceed 40℃, the minimum should not be lower than ‑5℃, and the average temperature within 24 hours should not be higher than 35℃.2. The altitude of the installation site should not be higher than 2000meter.3. When the maximum temperature reaches 40℃, the relative humidity of the installation site should not exceed 50%; when the temperature is the lowest temperature of ‑5℃, the relative humidity is higher, for example, if the temperature is 25℃, the relative humidity is 90%. Special measures should be taken to deal with occasional condensation on product surfaces due to temperature changes.