Protection switch with thermal excess-current release
US4745389A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Apr 1, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/084
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A protection switch, or a circuit breaker, includes a bimetallic element provided with a heating winding to form a portion of a structural unit insertable into an upper housing part, said structural unit further including a carrier connected to the bimetallic unit and having a connecting terminal extending from the carrier. The structural unit also including a terminal element connected to the heating winding and having an arc runner continuation, as well as carrying a contact piece of the switch contact. Continuations are provided for positioning the structural unit in a housing, the continuations engaging into guide grooves rigidly provided in the housing. The terminal element, in the region of the contact piece, is pressed against the housing stop and the carrier includes a fork-like free end embracing a catch rib of the housing. The bimetallic element is correctly positioned upon insertion of the structural unit into the housing so that readjustment is not necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.