Patent · US Active

Power circuit breaker

US8907751B2 · kind B2 · utility

1Cited by

16References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Andre Borgwardt · Ketzin/Havel, DE
Thomas Driehorn · Berlin, DE
Peter Kopaczewski · Berlin, DE
Andreas Krauß · Erwitte, DE
Aron-Ernst Musiol · Teltow, DE
Gerd Muller · Falkensee, DE

Key dates

Filing date	Dec 20, 2012
Grant date	Dec 9, 2014
Priority date	—
Expiry date	Jan 31, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH01H83/04
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A power circuit breaker is disclosed wherein an electric current is monitored by an electronic trip unit in order to detect an electrical fault. In an embodiment, a first magnetic device of the power circuit breaker, in the event of a fault being detected, is configured to be excited which, when it is excited, trips a trip mechanism via a plunger. As a result of tripping, the trip mechanism disconnects two contacts via which the current flows. The power circuit breaker of an embodiment includes a second magnetic device which is likewise able to be excited by the ETU and by which the trip mechanism is likewise able to be tripped.

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