Patent · US Active

Installation switching device

US8461947B2 · kind B2 · utility

1Cited by

14References

13Claims

0Family size

Assignee

ABB AG · US

Inventors

Joachim Wendel · Sinsheim, DE
Roland Ritz · Dielheim, DE
Joachim Becker · Schwetzingen, DE
Ralf Weber · Duisburg, DE

Key dates

Filing date	Jan 19, 2012
Grant date	Jun 11, 2013
Priority date	—
Expiry date	Jan 19, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01H73/045
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An installation switching device which rapidly disconnects short-circuit currents is provided. A contact lever is arranged at least partially in an air gap in a magnetic circuit such that, in case of a short circuit, the interaction between current flow and magnetic flux within the air gap can result in an electrodynamic force effect, which leads to rapid opening of at least one contact point. A switching mechanism acts via a first operating connecting line on the contact lever to open the contact point and/or to keep it open. In case of overcurrent tripping, an overcurrent release acts, by a switching mechanism and via a second operating connecting line, on the switching mechanism to open the contact point and keep it open. In case of short-circuit tripping, the contact lever acts via a third operating connecting line on the switching mechanism to keep the contact point open.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.