1)B Series AC Contactor CJX8 2)The manufacturer electrical motor magnetic thermal ac contactor series 3)Different type It has function of no voltage protection. ... life(10,000,000times)10.3 Operating frequency(time/h)AC-3600400300 AC CONTACTOR SERIES: LC1-D, LC1-DN, LC2-D, LC1-F, LC2 ... -F, 3TF, 3TH, 3TB, 3TD, 3TP, 3RT, EH, EB, GMC, A, B ...