| 摘要 |
The present invention relates to a ring main unit circuit breaker equipped with a contact force controller, and particularly, to a ring main unit circuit breaker equipped with a contact force controller, capable of controlling a contact force between contacts of a vacuum interrupter, by controlling an interval between the contacts, through a simple manual operation from outside, without having a disassembly operation. In a circuit breaker comprising: a rotational shaft (10); a cam (16) configured to convert a rotation force of the rotational shaft into a vertical force; a power transmission pin (20) which performs up-down movement by the cam; a movable rod (25) coupled to the power transmission pin; a contact spring (30) configured to provide a contact force to the movable rod; and a vacuum interrupter (35) having one end connected to the movable rod, the circuit breaker comprises: a driving shaft (45) installed at a driving unit (40); a driving link (50) which rotates by being coupled to the driving shaft; a transmission link (60) formed to have a controllable length, and performing up-down movement with its one end coupled to the driving link; and a rotation link (70) coupled to another end of the transmission link, and providing a rotation force to the rotational shaft. |
