Control circuit for motorized circuit breaker
US8772983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2011 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jan 11, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H3/227
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker module includes an electrically controlled actuator, such as a DC motor, operable to move a breaker contact between open and closed positions. An actuator power supply circuit coupled to an AC power source is configured to selectively energize the actuator, responsive to an actuation input. A processing circuit is configured to control the actuator power supply circuit to activate the actuator in response to breaker command signals, using the actuation input. The processing circuit is further configured to delay activations of the actuator as needed to enforce a predetermined cooling interval between successive actuations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.