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   circuit breaker

   /ˈsəːkɪt breɪkə/

   noun

   • 1. an automatic device for stopping the flow of current in an electric circuit as a safety measure.
   • ▪ a short period in which travel, business, and human contact are restricted in order to prevent the spread of an infectious disease: "a circuit breaker was recommended by the government's official scientific advisers"
   • ▪ a temporary halt automatically placed on trading as a means of inhibiting panic selling: "the circuit breaker was triggered as plunges reached 7 per cent"

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