Circuit breaker with ground fault detection module
US5933306A · kind A · utility
33Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1998 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Jan 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/0007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ground fault protection module is attached to a circuit breaker employing a thermal-magnetic trip unit to separate the circuit breaker contacts upon occurrence of a ground fault. The ground fault module contains a logic circuit and a giant magnetic resistor for detecting the ground fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.