D.C. circuit breaker with magnets for reducing contact arcing
US6809282B2 · kind B2 · utility
17Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2002 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Sep 12, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H73/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromagnetic circuit breaker is provided with a pair of magnets on opposing sides of the contacts in the open position. A magnetic field generated by the magnets combines with the magnetic field generated by the electrical arc created upon opening of the contacts during an overcurrent condition sensed by the breaker. The combined magnetic fields deflect the arc current, shifting the arc current away from the contact points and lengthening the path of the arc, thereby increasing the voltage rating of the breaker, by decreasing the intensity of an associated arc current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.