{HEAD ~ The vacuum switch} includes a movable connecting pin, a drive lever, a spring, and {TAIL ~ a stop} 
includes
{ HEAD ~ The vacuum switch } includes a movable connecting pin , a drive lever , a spring , and { TAIL ~ a stop }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL