Mz-0.3 / 0.5 and mzp-0.3 / 0.5 are applicable to the power connection of electric drills with rated voltage of 0.3/0.5kv and below.

Myq-0.3 / 0.5 is applicable to the lighting of coal mine underground roadway, the interlock and control of conveyor and the power connection of signal equipment, and it is not applicable to the places with frequent winding and retracting.