Multipolar circuit breaker
US6509817B2 · kind B2 · utility
1Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2001 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Oct 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/305
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multipolar circuit breaker of great breaking capacity prevents arc gas from blowing out from the side at the time of cutting off a short-circuit current. A stationary contact and a movable contact generating arcs when a short-circuit current is cut off, and an arc extinguisher extinguishing the arc are stored in an arc extinguisher casing. By forming the ceiling, the bottom and the sidewalls connecting the ceiling and the bottom of the arc extinguisher casing in continuity so that no gap is formed by an outward internal pressure, blow out of arc gas from the sidewall portion is suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.