Patent · US Expired

Circuit breaker having an electronic tripping unit and parameterization locking

US6603648B1 · kind B1 · utility

1Cited by

4References

2Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Bernd Ette · Wolfsburg, DE
Hans Rehaag · Panketal, DE
Andreas Pancke · Berlin, DE
Peter Schust · Berlin, DE

Key dates

Filing date	Jan 29, 2001
Grant date	Aug 5, 2003
Priority date	—
Expiry date	Jan 29, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01H71/7409
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A circuit breaker having a switch rated current setting on an electronic tripping unit is described. This is suitable for all circuit breakers having an electronic tripping unit that can be removed from the circuit breaker housing after removing a seal and can be lockably parameterized at the rated current of the circuit breaker.In parameterization of electronic tripping units of circuit breakers, the possibility of unauthorized parties tampering with the tripping unit must be prevented.Therefore, the tripping unit is equipped with a monitoring circuit which prevents the possibility of parameterization of the tripping unit when there is a galvanic connection between the trip magnet and the tripping unit. This permits parameterization only when the tripping unit has been removed, i.e., only by authorized personnel.

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