Electrical switching device
US5986528A · kind A · utility
15Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1998 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Jul 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H50/546
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical switching device prevents moving contacts from welding to stationary contacts in a switching device. This is achieved using an auxiliary magnet system in the main current path, which system produces a contact pressure force corresponding to the excitation current so that no arcs are produce between the contacts when overcurrents and short-circuit currents occur. The moving iron core of the auxiliary magnet system is for this purpose connected to the contact link mounting via which the contacts are switched on and off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.