{HEAD ~ Apparatus} for interrupting {TAIL ~ supply} of power from power system to portion of consumer load in response to control signal from power system 
for interrupting
{ HEAD ~ Apparatus } for interrupting { TAIL ~ supply } of power from power system to portion of consumer load in response to control signal from power system
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH