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