SPD, Overvoltage Protector, Dual Power Automatic Transfer Switch manufacturer / supplier in China, offering 1p+N 18mm SPD 20-40ka Surge Protector Lightning Protection Low-Voltage Arrester Device D40 2p AC275V DIN Rail for Distribution Box, 4p Leakage Protection MCCB Molded Case Circuit Breaker Flame-Retardant Overload & Short-Circuit Protector, 3p MCCB with Leakage Protection Molded Case Circuit Breaker Flame-Retardant Overload Short-Circuit Protector and so on.