Molded case circuit breaker having improved arc resistant properties
US4484045A · kind A · utility
8Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1982 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Aug 16, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/305
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Molded case circuit breakers having increased short circuit current ratings contain a dual contact blade arm assembly and an arc shield wherein the operating mechanism is shielded from the arc blast which occurs during contact arcing. The arc blast shield consists of a trifurcated barrier interposed between the circuit breaker operating mechanism and the arc chute without interfering with the contact arm motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.