SPD, Overvoltage Protector, Dual Power Automatic Transfer Switch manufacturer / supplier in China, offering MCCB with Leakage Protection Molded Case Circuit Breaker, Flame-Retardant, Overload & Short-Circuit Protector, Low-Voltage AC Surge Protective Device (SPD) 4p 275V/385V, 20ka-40ka Discharge Capacity Type 2 Surge Arrester for House & AC Systems DIN Rail Mount, 2p DC SPD Surge Protector for Home Shield Appliances & Electronics From Power Surges and Lightning DC Surge Arrester for Solar Panels & Battery Systems and so on.