The Metal ZnO Arrester (MOA) are important over-voltageprotection device. They are widely used in electric power system due to their excellent nonlinear and high surge absorbing capability.
Safety protection power circuit: Constant current control circuit, high standard standard protection system: preventing high voltage, temperature, surge, lightning and so on.
安全防护电源电路：恒流驱动电路，高标准防护系统：对过压、过热、浪涌、防雷具有良好的保护作用。
3
As the main appliance for overvoltage protection in electric system, the characteristic of Metal Oxide Surge Arresters (MOA) is decided by the unit residual voltage of non linear resistance.