WHZD-25A smart motor protector 1.CCC.ISO9001 2.have over six year's experience 3.apply to air compressor WHZD-25A smart motor protector Main Function 1,Protect function:Overload,phase failuer,block,three phase current unbalance,under-voltahe etc.2,Error display:With phase A,phaseB,phaseCworking power indicating(any one of the three phases failed,the indicating lamp off), overload display(when the ...