Breaking device for multipole electrical circuit breaker with multiple contacts
US4877929A · kind A · utility
9Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Aug 17, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/76
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arc extinguishing chamber with plates, for a high-rating low voltage circuit breaker, interrupts an arc generated by a multiple contact system having a set of movable main contacts and a movable arcing contact cooperating with corresponding stationary contacts fixed onto a contact terminal. A lower arcing horn is fixed to the terminal by means of three screws with an insulating shield interposed. A pair of jaws with an inclined portion follows the outline of the plates up to the vicinity of intermediate arc catching ridges disposed symmetrically in relation to the center line passing through the V-shaped notch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.