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