circuit breaker vs relay

circuit breaker

noun
  • An electrical switch capable of opening and closing an electrical circuit in all operating conditions, including fault situations. 

  • Synonym of trading curb 

  • More specifically, a circuit breaker that automatically breaks overcurrent conditions; a type of overcurrent protective device. 

  • Quarantine measures intended to prevent spread of pandemics, such as the coronavirus. 

relay

noun
  • An electrical actuator that allows a relatively small electrical voltage or current to control a larger voltage or current. 

  • A track and field discipline where runners take turns in carrying a baton from start to finish. Most common events are 4x100 meter and 4x400 meter competitions. 

  • A series of vehicles travelling in sequence. 

  • A new set of horses kept along a specific route so that they can replace animals that are tired. 

  • A new set of hounds. 

  • A new set of anything. 

verb
  • To pass on or transfer (information). 

How often have the words circuit breaker and relay occurred in a corpus of books? (source: Google Ngram Viewer )