| 摘要 |
<p>The breaker has a set of distinct and autonomous sub-assemblies arranged in a case, and a main circuit sub-assembly (10) including a magnetic coil (24), main thermal bimetallic strip (21), main mobile contact, secondary fixed contact and an arc sheet of arc cut-off chamber. An arc cut-off sub-assembly includes a stack of anti-ion plates, side cheek portions provided with an armor plate and a main fixed contact. A secondary circuit sub-assembly (15) includes a resistor, secondary thermal bimetallic strip (17) and a secondary mobile contact.</p> |
