Circuit interrupter with improved surge suppression
US7082021B2 · kind B2 · utility
29Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2005 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | Mar 14, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H83/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A suppression and protection circuit is used in conjunction with a circuit interrupter. In one configuration, a voltage clamping device such as a metal oxide varistor is utilized in a ground fault circuit interrupter product for handling transient surges and overvoltage conditions and is placed in series with a solenoid coil. The suppression and protection circuit includes a crowbar device across the line such as a header spark gap to prevent overvoltages, and a low pass filter such as an LC filter for suppressing transient surges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.