Patent · US Active

Electrical switchgear

US7504914B2 · kind B2 · utility

1Cited by

16References

5Claims

0Family size

Assignee

ABB PATENT GMBH · DE

Inventors

Jürgen Christmann · Bammental, DE
Ralf Weber · Duisburg, DE

Key dates

Filing date	Aug 31, 2006
Grant date	Mar 17, 2009
Priority date	—
Expiry date	Aug 31, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2300/034
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrical switchgear includes a thermal trip, an electromagnetic trip, and a switching mechanism with a latching point and at least one contact point that is continuously opened or closed. An operating handle is connected to one end of a lug by means of a coupling element and the other end of the lug is coupled to a contact base that carries a moving contact member. The thermal trip is coupled to a trip lever by a connecting rod that passes over the contact base so that both the thermal trip and the electromagnetic trip open a latching point in the event of an excess current and/or short circuit current.

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