Ground fault accessory for a molded case circuit breaker
US4568899A · kind A · utility
42Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1984 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Mar 27, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/0278
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ground fault accessory for a molded case circuit breaker is provided by converting a shunt trip accessory to automatically trip the breaker when a ground fault occurs. A printed circuit mounted in the housing with the shunt trip eliminates the need for a separate ground fault relay. The ground fault relay and the shunt trip are made available in the same accessory requiring no additional mounting of equipment or external wiring while conserving space which is scarce in load centers and other locations where both ground fault and shunt trip are desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.