... .apply to air compressor WHZD-25A smart motor protector Main Function 1,Protect function:Overload,phase failuer,block,three ... Aplace without violent impace and vibration. Points For Attention 1,User should select the protector with correct corrent accrding ... and exporting low voltage electricity, including ac contactor, air pressure switch, magnetic starter, motor protector, starter delta starter, oil ...