| 摘要 |
<p>A circuit breaker having an arc extinguishing mechanism includes a plurality of grids (20) disposed in a longitudinal direction, each having protruding portions at both ends thereof so as to define a space therebetween, a fixing portion to support the grids, insulating plates (40,50) fixed to both sides of the grids, a stator (70) located below the grids, the stator including an arc runner (74) and a stationary contact disposed at an upper side of the arc runner, and a mover (60) contactable with or separated from the stationary contact with moving up and down within the space, wherein an interval between the insulating plates within the space is shorter than a width of the mover.</p> |
