... TRANSFER SWITH 1.63A--630A 2.Delay-time 0.5s 3.Certificate:CE,CCC 4.Detection signal,to prevent error action automatic transfer ... up to you; automatically or hand-operating is available; Protection for lost voltage, over voltage, under-voltage, phase loss, frequency deviation ... full specification; Rated voltage: 400V, rated current: 10~3200A. AUTOMATIC TRANSFER SWITH