Electric switching device comprising an arc-quenching unit
US7439469B2 · kind B2 · utility
3Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 2004 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Sep 27, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2011/0093
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric switching device, designed to carry a low-voltage, in particular a circuit-breaker or contactor, having at least one arc-quenching unit (16;18) is provided. Connection contacts (8) are mounted in a housing (2) that can be sealed by a cover (4) and switching chambers (10) are configured in the housing. To adapt the device to different current ranges, the housing (2) and cover (4) are equipped with guide and retaining elements (12, 26, 28, 30) for cooling plates (16) that can be inserted and for arc-quenching laminated cores (18) that can be interchanged with the plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.