SPD, Overvoltage Protector, Dual Power Automatic Transfer Switch manufacturer / supplier in China, offering DIN Rail Surge Protector 1p+N 18mm 20-40ka Lightning Arrester D40 AC275V Low-Voltage SPD for Distribution Box, 20-40ka Surge Protective Device 1p+N 18mm SPD Lightning Arrester D40 AC275V DIN Rail Distribution Box, 1p+N 18mm SPD 20-40ka Surge Protector Lightning Arrester D40 AC275V DIN Rail for Distribution Box and so on.