单极断路器
/ˈsɪŋɡəl ˈpəʊl ˈbɹeɪkə/
n
English: single pole breaker · 单极断路器
English · single pole breakerEspañol · interruptor automático unipolarFrançais · disjoncteur unipolaire
释义：Protection device for a 120-volt circuit that, in the event of overload, is released and thus cuts off electricity to the circuits.