Current limiting circuit breaker
US4219790A · kind A · utility
5Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1979 |
| Grant date | Aug 26, 1980 |
| Priority date | — |
| Expiry date | Mar 5, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H77/108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker having a magnetic device energized by the current flowing through the circuit breaker to drive a contact arm to an open position at high speed to provide current limiting upon occurrence of a predetermined overcurrent condition. The magnetic device comprises a saturable magnetic shunt path, the iron of which saturates above said predetermined overcurrent condition, to energize the magnetic device and to cause a straightforward opening of the contacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.