High-voltage circuit breaker
US4357508A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1980 |
| Grant date | Nov 2, 1982 |
| Priority date | — |
| Expiry date | Jun 30, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/2041
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a multipole high-voltage circuit breaker of the type comprising a housing into which two stationary contacts per pole extend and a rotatable current bridge which connects and disconnects the stationary contacts upon rotation thereof. Both the stationary contacts and the contacts on the movable bridge are provided with preliminary switching points or contacts and main contact points or contacts. The preliminary contact points make contact before the main contact points and break contact after the main contact points. The arrangement permits arcing at the preliminary contact points only and thereby increases the life of the main contact points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.