China Yb3 YB2 Atex Explosion Proof Motor for Coal Mine Mining Three Phase Induction Asynchronous Electric Motor Ex dII plant Ex d IIBT4 d II BT4 380V 660V 460V 60Hz, Find details about China explosion proof motor, flame proof motor from Yb3 YB2 Atex Explosion Proof Motor for Coal Mine Mining Three Phase Induction Asynchronous Electric Motor Ex dII plant Ex d IIBT4 d II BT4 380V 660V 460V 60Hz