Features： 1、AUTOMATIC TRANSFER SWITCH: This automatic switch not only supports automatic mode, but also can be operated by manual button for easy operation and reliable performance. 2、MULTIPLE PROTECTION: The switch supports multiple protection functions, including short circuit, overload, phase loss, and undervoltage protection. 3、COMPACT STRUCTURE: The switch's ATS is compact, reliable in transmission, can be installed vertically or horizontally, and the power supply is easy and reliable to install. 4、DURABLE MATERIAL: The shell is made of PC material, which has good insulation, high temperature resistance and anti aging, and the silver contact can greatly improve the conductivity. 5、WIDE APPLICATION: The switch is mainly used in hospitals, stores, banks, chemical industry, metallurgy, high rise buildings, military facilities and other important occasion where power failure is not allowed. Specification： Item Type: Dual Power Automatic Transfer Switch Material: PC, silver Number of Poles: 4P Insulation Voltage: 4000 (V) Rated Voltage: 400 (V) ATS Product Category: CB micro break type Conversion Time: Less than 3s Operating Frequency: 50, 60Hz Rated Impact Withstand Voltage: 4KV 3C Rated Voltage Range: 37V-230V Package List： 1 x Dual Power Automatic Transfer Switch