... , rated voltage to 660V (individual grade to 1140V), current to 630 A,for frequently making and breaking the circuit and controlling the ... -40, CJ20-63, CJ20-100, CJ20-160, CJ20-250, CJ20-630 with long-itudinal seam arc chute; CJ20-160/11, CJ20 ... -250/06, CJ20-400, CJ20-630/06, CJ20-630/11, with grid piece arc chute.Rated control power ...