| 摘要 |
A contact device having a rotatable fixed contact of a breaker, the contact device comprising a fixed contact (10) and a fixed contact bracket (40); the fixed contact (10) is embedded and mounted in the fixed contact bracket (40), and a limiting member for restricting the fixed contact (10) to move along an axial position is provided on the fixed contact bracket (40); the fixed contact (10) is rotatable about a central shaft (71) provided on the fixed contact bracket (40), and a fixed contact spring (50) for restricting the fixed contact (10) to rotate is provided in the fixed contact bracket (40), the fixed contact spring (50) being connected to the fixed contact (10) to secure the fixed contact (10). The fixed contact (10) is rotatably mounted on the fixed contact bracket (40), and a repulsive force is generated on the contact for enabling a movable contact and the fixed contact (10) to rotate simultaneously, thus elongating an arc to accelerate arc quenching of the arc; and the limiting member formed on the fixed contact bracket (40) can effectively prevent the fixed contact (10) from moving along an axial direction of the shaft body, so as to ensure the contact area of the movable contact and the fixed contact, thus effectively reducing assembly difficulty, and improving assembly efficiency. |
