double pole breaker
/ˈdʌbəl ˈpəʊl ˈbɹeɪkə/
n
English · double pole breaker中文 · 双极断路器Español · interruptor automático bipolarFrançais · disjoncteur bipolaire
意味：Protection device for a 240-volt circuit that, in the event of overload, is released and thus cuts off electricity to the circuits.