Patent · US Active

Contact unit for a switching device and switching device

US11587749B2 · kind B2 · utility

0Cited by

7References

20Claims

0Family size

Assignee

Eaton Intelligent Power Limited · IE

Inventors

Volker Lang · Gauting, DE
Albert Zacharias · Neuwied, DE
Christian Ruempler · Bonn, DE
Kai Schroeder · Niederkassel, DE
Ute Molitor · Bonn, DE

Key dates

Filing date	Dec 16, 2019
Grant date	Feb 21, 2023
Priority date	—
Expiry date	Dec 16, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH01H33/04
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A contact unit for a switching device includes: a first fixed contact; a second fixed contact; a contact bridge; a first movable contact and a second movable contact that are arranged at the contact bridge; a first arc extinguishing chamber, a second arc extinguishing chamber, and a third arc extinguishing chamber; and an arc guiding system. The first fixed contact is in contact with the first movable contact and the second fixed contact is in contact with the second movable contact in a switched-on state of the contact unit. The first fixed contact is free of contact with the first movable contact and the second fixed contact is free of contact with the second movable contact in a switched-off state of the contact unit. The first and the second arc extinguishing chamber and the arc guiding system in coordination with each other extinguish a first arc.

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