... used to start forward or backward and stop direclty three-phase asynchronous electric motor with AC 50Hz,voltage up to 500V and capacity ... Old series:Model no.: QS5-15A, 15N, 15P/3, 30A, 30N, 30P/3, 63A, 63N, 63P/3, 100A, 100N, 100P/3Specification ModelMarkRated current(A)Motor ... -0-60QS5-100N10030QS5-63P/4I-O-II6322for 3 poletwo circuits60-0-60QS5-100P/410030New series:Model no.: LYN (my company model ...