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This Acti9 iPRD20r 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. The surge arresters with r indication have remote transfer of the information Cartridge to be replaced. 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 Acti 9 iPRD20r is compatible with TT and TN-S earthing system. The Imax rated discharge current is up to 40kA. The In nominal discharge current is 15kA. The Uc maximum continuous operating voltage in DM differential mode (between phase and neutral) is 350VAC. The Uc maximum continuous operating voltage in CM common mode (between neutral and earth) is 260VAC. The Up Voltage protection level in CM common mode and in DM differential mode is below 1.4kV. The Up Voltage protection level in CM common mode (between phase and neutral) is 1.2kV. The Un rated service voltage is 230VAC or 400VAC. 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 standard.