1.mine explosion-proof, 2.high-voltage, cable connector Purposes Explosion proof (high pressure) cable connector applies for coal dust, methane, and other explosive mixtures, matching to the equipment and switchgear cabinets, combination switches, Load switches and domestic power switch, In AC 3.3kV,10kV,1.12kV, frequency 50Hz line, as high pressure switches or transform motor, coupling device ...