Feature: 1. [Power Supply Switching] The power transfer switch features 2 workstation design, with A aas the common power supply and B as the backup power supply, suitable for 50 to 60Hz AC systems. 2. [Rapid Power Switching] The power transfer switch provides millisecond level switching speed, when there is an abnormality in the power supply, the backup power supply will immediately start working. 3. [Wide Application Scope] This power changeover switch is suitable for emergency power systems in various settings where continuous electricity is needed. 4. [Premium Materials] The automatic transfer switch is constructed from flame retardant PC plastic, with high insulation performance, anti heat and aging. Silver touch point can improve conductivity and service life. 5. [Easy Installation] This is a compact household power switch designed for detecting the normalcy of the main or backup power source. Its small size, lightweight, and user friendly features simplify the installation process, making it convenient for use. Specification: Item Type: Power Automatic Transfer Switch Material: PC Model: SGQ1-63AE/4P Rated Insulation Voltage (Ui): 690V Impulse Withstand voltage: 8KV Rated Current: 63A Frequency: 50/60Hz . Package List: 1 x Automatic Transfer Switch Note: Please read the manual carefully before use.