contactor position lines connect to said signal contacts for transmitting information about {HEAD ~ positions} of {TAIL ~ the three phase contactors} 
of
contactor position lines connect to said signal contacts for transmitting information about { HEAD ~ positions } of { TAIL ~ the three phase contactors }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL