Device for protection against overload of the switch contacts of a switching device
US5933303A · kind A · utility
6Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1998 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Apr 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/2427
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for protection against overload of the switching contacts (22, 23) of a switching device (6) has an energy transducer (5) which is arranged near the switch contacts (22, 23) and is exposed to electromagnetic radiation emanating from an electric arc occurring at the switch contacts (22, 23). If the switch contacts (22, 23) are separated electrodynamically due to an overload, the energy transducer causes the circuit to be shut down by tripping solenoid (1) of a power circuit-breaker (6), for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.