... ,Vacuum ,Electromagnetic Actuator Mine Explosion-proof Vacuum Electromagnetic Actuator ApplicationsThe actuator is mainly used ... stopping the three-phase squirrel-cage induction motor under the mine with explosive gases (methane) in the AC circuit, with the ... . power kW of the controlled motor when η×cosφ=0.75660V380V660V380V45256035 Mine Explosion-proof Vacuum Electromagnetic Actuator