Release for an electric switching arrangement
US8553385B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 2010 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | May 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2077/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A release for an electrical switching arrangement includes at least two switching contacts, which are arranged in a housing and are isolated if the current flowing via the switching contacts has exceeded a predetermined threshold value. The release includes an actuating element, which responds, counter to the force of a restraining apparatus, to a pressure which is generated by an arc occurring in an isolating zone of the switching contacts. The isolating zone is surrounded by the housing, and actuates a shutdown mechanism which brings about automatic interruption of the current path. The actuating element has a movable element, which forms a blocking element in a flow channel, which is connected to the isolating zone. The blocking element performs a predetermined control movement at the pressure which is intended to result in shutdown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.