Electrical switching apparatus and heater assembly therefor
US7800478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2008 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Oct 31, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/0242
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heater assembly is provided for an electrical switching apparatus. The heater assembly includes a heater element and an elongated bimetal. The heater element includes first and second ends, an intermediate portion disposed therebetween and an aperture disposed proximate the first end. The elongated bimetal includes opposing first and second ends, and is movable between first and second positions corresponding respectively to the separable contacts of the electrical switching apparatus being closeable, and to the first end of the elongated bimetal cooperating with a trip bar to cause an operating mechanism to open the separable contacts. The second end of the elongated bimetal is coupled to the intermediate portion of the heater element. When the elongated bimetal is disposed in the first position, the first end of the elongated bimetal extends beyond the upper surface of the first end of the heater element into the aperture of the heater element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.