Features: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 EPS 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.Specifications:Model: ZGQ1M - 63/4PInsulation voltage: 4000 (V)Input voltage: 220VRated voltage: 400 (V)EPS external indication: DC12-24V Rated current: 63 (A)Rated impact withstand voltage: 4 (KV)3C rated voltage range: 370V-440VHole: M6Size: Approx. 220 x 132 x 120mm / 8.7 x 5.2 x 4.7inWeight: 1862gPackage included:1 x Automatic Transfer Switch.Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.