Circuit breaker/surge arrestor package in which the arrestor uses an MOV that is thermally de-coupled from the breaker's thermal trip circuit
US5321574A · kind A · utility
11Cited by
19References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1992 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | Jan 17, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker/surge arrestor package for plug-in installation in the space of two standard one-inch openings in a contemporary residential load center. The electrical and thermal characteristics of the components are selected such that a threshold of a substantially continuous current through a Metal Oxide Varistor in the surge arrestor causes the circuit breaker to trip magnetically before being able to trip thermally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.