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Three-phase motor contactor button interlock action for swit

2016-09-04 19:53  
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Three-phase motor contactor button interlock action for switching circuit
Just shown in the figure, STF, STR, SB1 and SB2 all are composite buttons. STF and STR are respectively positive and reverse button, which operate along with the contactor’s auxiliary contacts for achieve interlock action. SB1 and SB2 both are jog buttons.