| 摘要 |
<p>A new single pole circuit breaker (10), intended for use in a multipole circuit breaker, is disclosed. Among other distinctions, upon being tripped, a relatively large torque is imparted to the trip lever (270) of the single pole circuit breaker. This is achieved by interacting the contact bar stop pin (90) on the contact bar (70) of the single pole circuit breaker with a camming surface (285) on the trip lever (270). In addition, when pivotal motion is imparted to the trip lever (270) by an external agent, the trip lever (270) directly engages the toggle mechanism of the circuit breaker, to collapse the toggle mechanism and produce tripping. Moreover, the trip lever (270) has a configuration which permits convenient pivotal mounting to a frame (100). <IMAGE></p> |
