63A 400V 3,Pole Automatic Transfer Switch, Reliable Power for Homes Offices, Fire,Rated

Reasonable structure, small size, beautiful appearance, equipped with protective cover, power supply is more safe and reliable. Complete protection function, short circuit, overload, lack of phase, undervoltage protection. With fire power supply interface, DC12-24v can reliably long distance double point. Noiseless operation,energy saving, easy installation, simple operation and reliable performance. Especially suitable for office buildings requiring fire fighting.