| 摘要 |
A collapsible contact arm drive link arrangement for a circuit breaker operating mechanism has a pair of upper links for receiving the circuit breaker operating mechanism and a lower link for receiving a circuit breaker contact arm carrier at one end. Intermediate the upper links and the lower link, a scissors link, which is connected with the upper links and lower link, allows the lower link to move from a first position (e.g., closed) to a second position (e.g., tripped). The movement occurs upon the application of a force on the lower link in excess of a predetermined force that is applied to the upper links.
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