Low voltage circuit breaker
US4443828A · kind A · utility
30Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1982 |
| Grant date | Apr 17, 1984 |
| Priority date | — |
| Expiry date | Mar 2, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/124
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A low voltage circuit breaker with a current sensing unit having a magnetic circuit with three branches, the secondary winding being mounted on the intermediate branch and the primary winding being formed by a conductor selectively passing through one or two of the openings provided between the secondary winding and the outer branches. The circuit breaker comprises an instantaneous electromagnetic trip mechanism and a static long time and short time delay trip unit, the latter unit being governed by a signal attenuated by a rating selection device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.