Wide applications: This switch can be used for home and public places, especially suitable for office buildings and public places that require fire fighting.Power supply EPS electric: This transfer switch adopted fire EPS power supply interface, DC12-24v can reliably long distance double point.Automatic and manual: This switch automatic not only supports automatic mode, but also can be operated by manual button, simple operation and reliable performance.Full protection function: This switch supports variety protection function , including short circuit, overload, phase failure and undervoltage protection.Easy Installation: Reasonable structure, small size, equipped with; a protective cover, the power supply is easy to install and reliable. Features: Reasonable structure, small size, beautiful appearance, equipped with a protective cover, the power supply is more safe and reliable. Full protection function, short circuit, overload, phase failure, undervoltage protection. With the interface of EPS power supply, DC12-24v can ensure reliable double point over long distances. Quiet operation, energy saving, easy installation, simple operation and reliable performance. > Particularly suitable for office buildings requiring fire protection. Features: Model: ZGQ1M - 63 / 3P Input voltage: 220V Insulation voltage: 4000 (V) Rated voltage: 400 (V) ) EPS external indication: DC12-24V Rated current: 63 (A) Rated impulse withstand voltage: 4 (KV) 3C rated voltage range: 37V-440V Size: 18.5 x 13.5cm / 7.28 x 5.31in Weight: 1685g Package Included: 1 x Automatic Transfer Switch