| Description de l'article | Overvoltage protection / overvoltage protection type 1+2+3 (b+c+d) according to EN 61643-11:2012 / po i 3 r 280V/12, 5KA is designed to balance the lightning strike potential and is installed on the line inlet to the main switchboard. Connected TN-c, 3 phase, 4 wire system (L1, L2, L3 and pen). It contains a replaceable VARISTOR insert and has a contact for remote status indication. High diverting capability provided by power varistors mov. Mounting is on DIN rail TS35 MM. Usage as the 1ST level T1 of overvoltage protection it provides overvoltage protection for appliances installed in the main distributor in the range of T1, T2, T3 (coarse, medium and fine protection).po i 3 r 280V/12, 5KA it is intended to protection of mains and appliances in industrial buildings, administration buildings, buildings of civil amenities and detached houses against the effects of overvoltage wave caused |