Mine Explosion Proof and Intrinsically Safe Four Circuit (Double Circuit) Vacuum Motor Starter QJZ-80+120,2×120,120+200/1140（660）SF

Our explosion proof and intrinsically safe vacuum motor starter is applicable to the underground coal mining with explosive gases to control and switch the dual power dual fan connected in the power line with the frequency of AC 50Hz and voltage of 660 or 1140 V, so as to ensure uninterrupted ventilation in the coal mine.

Intelligent control; screen display; having protection functions of over load/voltage, short voltage, short circuit, open phase, leakage locking; local/remote control; power supply for double fans; auto switching in case of fault (adjustable switching time)