| Description de l'article | Overvoltage protection / overvoltage protection type 1+2+3 (b+c+d) according to EN 61643-11:2012 / pom i 2 50KA 280V/25KA is used for protection of mains and appliances against the effects of overvoltage wave caused by a close, direct or indirect lightning hit. Connected TN-s, 1 phase, 3 wire system (l, n and PE). Designed as one monoblock with varistors. High diverting capability provided by power varistors mov. Mounting is on DIN rail TS35 MM. Usage as the 1ST level ( T1, coarse protection) in a 3-LEVEL overvoltage protection concept. It provides overvoltage protection for appliances installed in the main distributor in the range of T1, T2, T3 (coarse, medium and fine protection).pom i 2 50KA 280V/25KA is used for protection of mains and appliances against the effects of overvoltage wave caused by a close, direct or indirect lightning hit. Usage as the 1ST level ( T1, coarse protection |