Patent ID: 6853279

Claim:
A trip unit comprising: a housing; a plunger mounted with respect to said housing, said plunger having a first position, a second position and a third position; means for latching said plunger in said first position, for releasing said plunger from said first position to said second position, and for relatching said plunger in said first position; means for biasing said plunger to said second position; a trip lever pivotally mounted with respect to said housing, said trip lever including a first surface, a second surface and a third surface; and a trip actuator including a member having a first position, a second position and a third position, which resets said trip actuator, the first position of the member of said trip actuator corresponding to the first position of said plunger, the second position of the member of said trip actuator engaging the first surface of said trip lever and rotating said trip lever in a first rotational direction, in order to engage said means for latching with the second surface of said trip lever and to release said plunger from said first position, said plunger engaging the third surface of said trip lever at about the third position of said plunger and rotating said trip lever in an opposite second rotational direction, in order to engage the first surface of said trip lever with the member of said trip actuator and to move said member to the third position thereof.