the series AC contactor is suitablt for using in the circuits up to the rated voltage 660V AC 50/60Hz,rated current up to 95A,for making,breaking.frequently starting&controling the AC motor,combined with thr auxiliary contact block,timer delay&machine-interlocking device etc,it becomes the delay contactor,star-delta starter,with the thermal relay,it is combined into the electromagnetic starter,the contactor is producted according to IEC947-2,VDE0660,BS5432