H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/160
H01H 73/24 (2006.01) H01H 71/52 (2006.01) H01H 71/50 (2006.01) H01H 73/04 (2006.01)
Patent
CA 1044288
ABSTRACT OF THE DISCLOSURE A motor circuit interrupter characterized by a manually operated fast-acting switch and a bi-metallic overload relay for trip opening of the switch contacts in response to current overloads. The switch comprises means for moving electric contacts between open and closed positions which means includes a releasable arm which is movable between latched and unlatched positions. When in the "unlatched" condition, the contacts are open and the operating means cannot be operated to effect a re-closing of the contacts. The switch further comprises a pivoted latch lever operatively connected to the releasable arm to retain the arm in the latched condition, or for effecting unlatching of the arm, a latch retainer lever to retain the latch lever in the latch position said retainer lever is operatively connected to the trip plate of the overload relay to effect unlatching of the latch lever and releasable arm in response to an overload current. The retainer lever is spring-biased to the latch position with the latch lever and the retainer lever comprising an extension engageable with the latch lever when the latter is in the unlatched position to maintain the latch lever in a relatching position.
236436
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