Molded case circuit breaker movable contact arm arrangement
US4931603A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1989 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Mar 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H77/102
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A molded case circuit breaker movable contact arm electrically connects with the circuit breaker load terminal without requiring a flexible electrical conducting braid. The contact arm is pivotally arranged within a contact arm support to which the load terminal lug is attached. The contact arm pivot pin is supported on a pair of parallel support posts extending from the contact arm support and a pair of bifurcated shunt plates are positioned on the pivot pin, one on each side of the contact arm to promote good electric transport between the contact arm and the support posts during short circuit conditions without interfering with the rotational movement of the contact arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.