| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a small sized earth leakage breaker having excellent balance characteristics. SOLUTION: A zero-phase current transformer 2 comprises a first conductive plate 1, a second conductive plate 11, and a third conductive plate 12 penetrating the transformer 2, and a board case 4, a printed board 3, and a board cover 7 are disposed above these. The zero-phase current transformer 2 is provided with a first shield member in the left-to-right direction of the first conductive plate 1 and the third conductive plate 12. The zero-phase transformer can be composed in small size, and parts can be easily mounted into an earth leakage breaker container. A small sized earth leakage breaker having excellent balance characteristics can thus be provided.</p> |
