This Acti9 PRD135r product is a modular surge arrester protecting 1P electrical installations against direct lightning strikes. The Imax maximum discharge current is 50kA .The In nominal discharge current is 35kA. The Type 1 surge arrester is recommended for electrical installations in the service sector and industrial buildings protected by a lightning conductor. It is used to conduct the direct lightning current, propagating from the earth conductor to the network conductors. The surge arresters with “r” indication have remote transfer of the information “Cartridge to be replaced”. The Uc maximum continuous operating voltage in common mode (between neutral and earth) is 440VAC. The Uc maximum continuous operating voltage in differential mode (between phase and neutral) is 440VAC. The Up Voltage protection level in common mode (between phase and earth) is 2.5kV. The Ue rated operational voltage is 400VAC to 690VAC +/- 10%. The product colour is anthracite grey (RAL7016).The dimensions are (W) 36mm x (H) 99mm x (D) 71mm. The weight is 401g. 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.