WARNING A certified AC Surge Protection Device (SPD) is suggested to be installed upstream close to the charging station. SPDs shall comply with standard IEC / EN 61643-11, and the rated voltage against lightning overvoltage shall be up to 2.5kV. A certified Type A or Type B Residual Current Device (RCD) must be installed upstream, close to the EV charger. The RCD shall have a 1-phase 40A rated current and comply with one of the following standards: IEC 61008-1, IEC 61009-1, IEC 60947-2 or IEC 62423.
All these protection devices shall be chosen based on the appropriate technical specifications, i.e., working voltage ≥ charging station working voltage, working current ≥ charging station working current, Ingress Protection (IP) ≥ IP54 or installed inside IP54 protection box for outdoor use. 5