SPD, Overvoltage Protector, Dual Power Automatic Transfer Switch manufacturer / supplier in China, offering 2p 63A DC Circuit Breaker - IP65 Waterproof, for Solar PV Systems, PV Combiner Box & Air Switch Application (DC500V/1000V Optional), 4p 63A/125A ATS Dual Power Automatic Transfer Switch - PV Rated, AC400V 50/60Hz, Manual/Auto Mode, Selector Switch, 4p 63A/125A ATS - AC400V 50/60Hz Dual Power Changeover Switch with Manual/Auto Mode, Selector (SA) Switch, MCB Form Factor and so on.