Limiting circuit breaker equipped with an electromagnetic effect contact fall delay device
US5029301A · kind A · utility
105Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1990 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Jun 27, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2001/223
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A limiting circuit breaker comprises an electrodynamic repulsion contact system, and an electromagnetic latch arranged in the vicinity of the contact system, and electrically insulated from the latter. Actuation of the latch to the active position results from the action of the electromagnetic field due to a short-circuit current flowing in the pole, so as to temporarily keep the movable contact open after repulsion. The latch is equipped with a pair of ferromagnetic brackets, and with a spring blade to return to an inactive position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.