Miniaturized solenoid operated trip device

Details Miniaturized solenoid operated trip device Miniaturized solenoid operated trip device

H - Electricity

01

H

H01H 71/24 (2006.01)

Patent

CA 2114515

MINIATURIZED SOLENOID OPERATED TRIP DEVICE Abstract of the Disclosure A solenoid operated circuit breaker trip device has a base defining a guide channel and an actuator that slides in the guide channel and interacts with a contact breaking mechanism having a trip bar operable to make or break electrical contacts. A spring biases the actuator toward the trip bar. A solenoid on the base electromagnetically displaces a plunger along a linear path and is coupled to a trigger having a latching surface that holds or releases the actuator. The guide channel runs parallel to the path of the plunger, adjacent the solenoid. The trigger is L-shaped and pivoted on a pivot pin between two legs of its L-shape, on an axis transverse to the path of the plunger. One of the two trigger legs is coupled to the plunger, and the other has an engagement surface that is moved behind a complementary surface of the actuator to selectively block its displacement. The base can be a slotted frame attached to the solenoid or a molded housing having an interior cavity for receiving the solenoid. A return spring urges the trigger toward the latching position.

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