Current limiting circuit breaker

Details Current limiting circuit breaker Current limiting circuit breaker

H - Electricity

01

H

306/109

H01H 73/36 (2006.01) H01H 9/34 (2006.01) H01H 71/02 (2006.01)

Patent

CA 1051069

ABSTRACT OF THE DISCLOSURE In an electromagnetically operable circuit interrupting device comprising an outer molded case, a magnetic core disposed in the outer case, a conductor turn disposed in the outer case and associated with the magnetic core, an armature disposed in the outer case, normally in spaced relationship to the magnetic core, and attracted toward the magnetic core upon flow of a predetermined current in the conductor turn, an inner case disposed in the outer case adjacent the armature of an opposite side thereof from the magnetic core, wherein the im- provement consists of an armature pin secured to the armature and having a portion reciprocally mounted in the inner case, a first contact blade having a mounting end portion disposed in the inner case and a contact end portion disposed outwardly of the inner case, a second contact blade having a mounting end portion disposed in the inner case and a contact end portion disposed outwardly of the inner case, each of the contact blades having a contact mounted on the contact end portion thereof and engaged with the contact on the contact end portion of the other of the contact blades when the contact blades are is a closed position, means in the inner case on one side of a longitudinal axis of the armature pin pivotally mounting the first contact blade, means in the inner case on the other side of the long- itudinal axis of the armature pin pivotally mounting the second contact blade, means operatively connecting the armature pin with the contact blades, and spring means in the inner case bias- ing the contact blades towards the closed position.

291305

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