{TAIL ~ A voltage surge suppressor} 1 further comprising diagnostic means to indicate the status of {HEAD ~ the varistor} 
{ TAIL ~ A voltage surge suppressor } 1 further comprising diagnostic means to indicate the status of { HEAD ~ the varistor }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD