Features Auto and Manual Use: Supporting automatic mode, the transfer switch also enables simple manual operation, and the operation is very efficient. Multiple Protection: Designed to have short circuit protection, overload protection, under voltage protection, open phase protection and so on. High Working Safety: Comes with 63A rated working current Ie, 400V rated working voltage Ue, and 4KV rated impulse withstand voltage Uimp. Wide in Application: Can be used in families and public places, especially in office buildings and public places requiring fire protection. Simple Installation: Equipped with protective cover, the dual power automatic transfer switch with compact size is easy to install in minutes. Specification: Item Type: Dual Power Automatic Transfer Switch Model: SGQ1-63 4P Material: Pa66 Rated Working Current Ie: 63A Rated Working Voltage Ue: 400V Rated Impulse Withstand Voltage Uimp: 4KV Standards: GB14048.11, IEC60947-6-1 Package List: 1 x Dual Power Automatic Transfer Switch 1 x User Manual Package List 1 x Dual Power Automatic Transfer Switch 1 x User Manual