Circuit interrupter with improved electro-mechanical undervoltage release mechanism
US4489295A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1982 |
| Grant date | Dec 18, 1984 |
| Priority date | — |
| Expiry date | Dec 17, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/1063
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multiple pole circuit breaker comprises stationary and movable contacts in each pole, with a cross bar extending between the poles and causing concerted movement of the movable contacts. An operating mechanism effects movement of the movable contacts between open and closed positions, and a resettable undervoltage release mechanism cooperates with the operating mechanism to effect movement of the movable contacts. The undervoltage release mechanism operates to move the movable contacts from the closed to open position upon the occurrence of voltage levels less than a predetermined value, with the undervoltage release mechanism being reset by physical contact with the cross bar as the cross bar moves with the movable contacts from the closed to open positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.