1. Flame Retardant PC Material and Silver Contacts: The dual power automatic transfer switch is made of flame retardant PC material, which is well insulated and high temperature resistant, and silver s, which are anti aging and easy to install and maintain. 2. Widely Used: The automatic transfer switch is anti interference, self throwing and self repeating type, used in various scenarios where continuous power failure is not allowed, families, shopping centers, factories, laboratories, farms, etc. 3. Continuous Power Supply: The automatic transfer switch operates so that when the normal power supply is abnormal, the standby power supply works immediately to ensure the continuity of power supply. When the normal power supply is on, it will automatically switch back to normal power supply from the backup power supply. 4. Standard 35mm Rail Mount: This automatic transfer switch is suitable for 50 or 60Hz AC rated 110V 63A emergency power supply system, designed for home rail mounting and dedicated for PZ30 distribution box.