... changeover from one kind of circuit to the other.Old series:Model no.: QS5-15A, 15N, 15P/3, 30A, 30N, 30P ... , 63P/3, 100A, 100N, 100P/3Specification ModelMarkRated current(A)Motor controlcapacity(HP)Electrical life(times)Mechanical life(per hr)Frequency ofoperation(per ... /4I-O-II6322for 3 poletwo circuits60-0-60QS5-100P/410030New series:Model no.: LYN (my company model no.), someother call also ...