This Acti9 iPRD20 surge arrester protects 3P+N installations. It allows quick replacement of damaged cartridges. This Type 2 device is recommended for medium risk level and incoming panel board. It can be turned over to allow the phase/neutral/earth cables to enter through either the top or the bottom. The associated circuit breaker Isc breaking capacity can go up to 50kA. This Acti9 iPRD20 is compatible with TT and TN-S earthing system. The Imax rated discharge current is 20kA. The In nominal discharge current is 5kA. The Uc maximum continuous operating voltage in common mode is 260VAC between neutral and earth, and 350VAC between phase and earth. The Up Voltage protection level in differential mode (between phase and neutral) is 1.1kV. The Up Voltage protection level in common mode (between neutral and earth) is 1.4kV. The Ue operating voltage is 230VAC or 400VAC +/- 10%. The operating frequency is 50Hz or 60Hz. The dimensions are (W) 72mm x (H) 85mm x (D) 69mm. The width in 9mm pitches is 8. The weight is 450g. The degree of protection is IP20 and IP40 in modular enclosure. The operating temperature is -25°C to 60°C. The storage temperature is -40°C to 85°C. This product is compliant with EN 61643-11 and IEC 61643-11 standards.