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main breaker /ˈmeɪn ˈbɹeɪkə/ n

中文：主断路器

中文 · 主断路器Español · interruptor automático principalFrançais · disjoncteur principal
Meaning：Mechanism controlling the supply of electricity to the hot bus bars; it allows the current to all the dwelling’s circuits to be cut.
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Found in these illustrated scenes（1）

Circuit breaker panel

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