| 摘要 |
<p>A dual-mechanism 1P+N earth leakage circuit breaker comprises an L-pole circuit breaker unit (1) and an N-pole earth leakage protection unit (2). The L-pole circuit breaker unit and the N-pole earth leakage protection unit are independent devices, and each has a same independent actuating mechanism. A handle of the L-pole circuit breaker unit is linked with a handle of the N-pole earth leakage protection unit through a shaft pin (4), and trip off is linked with the shaft pin through lock catches (9, 28) so as to implement simultaneous breaking protection of the L pole and the N pole. The dual-mechanism 1P+N earth leakage circuit breaker has a small volume and thickness, a long life, and high stability and reliability. The structure is unique in that the L pole may be separated to function as a 1P circuit breaker. The circuit breaker has earth leakage indication and earth leakage reset functions. The L pole or N pole may be connected with accessories to provide a multi-functional earth leakage circuit breaker.</p> |
