Patent · US Expired

Electromechanical protection devcie

US5410442A · kind A · utility

4Cited by

7References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Fritz Pohl · Hemhofen, DE
Wilfried Jaehner · Wendelstein, DE

Key dates

Filing date	Feb 3, 1993
Grant date	Apr 25, 1995
Priority date	—
Expiry date	Feb 3, 2013

Classification

Technology area (CPC H)Electricity
CPC primaryH01H9/542
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A hybrid switch is provided for switching a sink on and off. The hybrid switch contains a first semiconductor switch with a commutation switch. According to the present invention, a magnetic drive includes a first magnetic coil through which short-circuit current flows. A second semiconductor switch is connected in series with a second magnetic coil that series being connected in parallel to the series connection of the first magnetic coil and the sink. Short circuit flows through the first magnetic coil via the commutation switch which bridges at least the first semiconductor switch.

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