For Residual Current Devices, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our Residual Current Devices has been well received by many customers and enjoyed a good reputation in many countries. SASSIN INTERNATIONAL ELECTRIC SHANGHAI CO.,LTD.Residual Current Devices have characteristic design & practical performance & competitive price, for more information on the Residual Current Devices, please feel free to contact us.