Molded case circuit breaker with an improved operating mechanism having a pivot-transfer trip-free linkage.

摘要

A molded case circuit breaker includes an operating mechanism having an over-center, trip-free, pivot transfer toggle mechanism, a pair of electrical contacts. The toggle mechanism includes a pair of stationary, spaced apart links and a pair of movable, spaced apart toggle links. Each movable link includes an integrally formed, pivot point for engagement with a surface of one of the stationary links. Each stationary link includes a second pivot point for engagement by a surface of one of the movable links. The movable links about the first pivot points effect a rapid separation of the electrical contacts movable links about the second pivot points effect a rapid acceleration of a movable electrical contact.