... as main switch for household and similiar installation.Technical Data1,Pole:1,2,3,42,Rated Current:16,25,40,63 ... ,Rated frequency:50/60Hz5,Rated short-circuit making capacity:3KA.6,Rated withstand current:1500A within 1sec.7,Electro-mechanical endurance ... ,Installation:-On symmetrical din rail 35mm-Panel mounting TOIS7 three-pole isolator