Fault-current protection device with an overload protection device
US6697244B1 · kind B1 · utility
18Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2001 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Mar 7, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H5/042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A residual current device (1), having a residual current tripping circuit (4) which is independent of the mains voltage and contains a core balance transformer (2), and having overload protection (18) arranged in an overload tripping circuit (10) which is supplied with the mains current, wherein the residual current tripping circuit (4) and the overload tripping circuit (10) contain a common tripping relay (7) for operating a switching mechanism (8) which switches a conductor network (LN).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.