Patent · US Expired

Manually operable circuit breaker

US5168137A · kind A · utility

7Cited by

5References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Friedrich Hufnagel · Sulzbach-Rosenberg, DE
Georg Weidner · Amberg, DE

Key dates

Filing date	Apr 30, 1990
Grant date	Dec 1, 1992
Priority date	—
Expiry date	Apr 30, 2010

Classification

Technology area (CPC H)Electricity
CPC primaryH01H71/04
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A manually operable circuit breaker having coupling terminals and a visible isolating gap which can be established only when the protective circuit breaker is open. The isolating gap is provided by an isolating module which is mountable on coupling terminals of the circuit breaker. The isolating module contains a removable isolating unit. The isolating unit can be removed only when the protective circuit breaker is open. In this way, the circuit breaker is provided with a visible isolating gap only when required.

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