series low voltage soft starter ,intelligent economic soft start,designed for use with three phase induction motors Digital Motor Voltage ... Ie:175A, 210A, 250A; Type: AC-53a; Pole No.:3P 2010/04/23 --- 2014/09/30 Certificate ... 470A, 570A, 720A, 840A; Type: AC-53a; Pole No.:3P 2010/04/08 --- 2014/09/30 Certificate ... 470A, 570A, 720A, 840A; Type: AC-53a; Pole No.:3P 2010/04/08 --- 2014/09/30 CE ...