A modular electrical component includes {HEAD ~ a mating keying arrangement} complimentary to {TAIL ~ the keying arrangement} in the channel, and thereby only allows the modular electrical component to be insertable into the channel and coupled with a corresponding electrical terminal array in a preselected orientation 
complimentary to
A modular electrical component includes { HEAD ~ a mating keying arrangement } complimentary to { TAIL ~ the keying arrangement } in the channel , and thereby only allows the modular electrical component to be insertable into the channel and coupled with a corresponding electrical terminal array in a preselected orientation
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH