Electrical service device having an arc prechamber area, arc guide rails and a current-limiting arc-quenching device
US7247808B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2006 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Feb 9, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/249
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention proposes an electrical service device, in particular line circuit breaker or motor circuit breaker, having a housing having connecting areas and connection means (2, 3) for the purpose of connecting busbars and/or connection lines on both end sides and, having at least one switching contact having a fixed and a movable contact piece (4, 6), an arc (13) being produced in an arc prechamber area (7) between said fixed and movable contact pieces (4, 6) in the event of a disconnection. The arc enters a current-limiting arc-quenching device (12), in particular an arc splitter stack, via arc guide rails (14, 16), at least one insulating plate (20, 25+26) being arranged at the edge of the arc-quenching device (12). The insulating plate (20, 25+26) is fixed to the end section of an arc guide rail (14) by means of a fixing clip (22).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.