Ipf k 20 modular surge arrester - 3 poles + n - 340v this acti9 ipf k 20 product is a modular surge arrester. It protects 3p+n installations. The imax maximum discharge current is 20ka .the in nominal discharge current is 5ka. The multi-pole single-piece surge arrester range is adapted for tt, tn-s, tn-c earthing systems. This type 2 incoming protection surge arrester is recommended for a medium risk level. The uc maximum continuous operating voltage in common mode is 260vac between neutral and earth, and is 340vac between phase and earth. The uc maximum continuous operating voltage in differential mode (between phase and neutral) is 340vac. The up voltage protection level is 1.5Kv in common mode (between neutral and earth) and is 1.1Kv in differential mode (between phase and neutral). The ue rated operational voltage is 230vac or 400vac +/- 10%. The product colour is white (ral9003).the dimensions are (w) 72mm x (h) 81mm x (d) 69mm. The weight is 420g. 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 iec 61643-11 and en 61643-11 standards.