Low-voltage circuit breaker with a capability of tripping...

Details Low-voltage circuit breaker with a capability of tripping... Low-voltage circuit breaker with a capability of tripping...

2005-12-20

2005-12-20

Barrera, Ramon M. (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

C335S021000, C335S023000, C335S035000, C335S201000

Reexamination Certificate

active

06977567

ABSTRACT:
This invention discloses a low-voltage circuit breaker with a capability of tripping quickly. Its main feature is that at least one of the side faces of the contact device provides an open flange which has an internal through hole, and the bottom of a rotating shaft disposed on the bottom part provides a stressed member. The stressed member receives the over-pressure airflow escaping from the open flange of the contact device to generate a force. The force is passed to the activating member by the rotating shaft and is magnified, then hits the latch quickly and makes a trip. An intermediate step is bypassed due to the force produced earlier, the force which is produced by the electromagnetism part in the heat energy and electromagnetic system, so that the low-voltage breaker can open quickly and reduces opening time greatly and improve the breaking capability.

REFERENCES:
patent: 4430631 (1984-02-01), Forsell et al.
patent: 4521756 (1985-06-01), Forsell
patent: 5103198 (1992-04-01), Morel et al.
patent: A-1056374 (1991-11-01), None
patent: ZL-92111503.2 (1998-12-01), None
patent: A-9320442 (1997-12-01), None

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