Siemens Aktiengesellschaft

Gunther Eckert

Winfried Vierling

Christoph Weber

Wolfgang Leitl

Reinhard Sangl

Michael Neumeier

Manfred Heinzlmeir

Thomas Rieger

Stefan Höhe

In line circuit breakers with a combined overcurrent/short-circuit current tripping device, tripping should take place in a well defined manner in the case of an overcurrent and in the case of a short-circuit current. For this purpose, gaps (A, B) need to be set precisely. If the housing is made from a cost-effective housing material such as thermosetting plastic it is subject to shrinkage. As a result, the mentioned gaps may change. An armature () is mounted in such a way that it changes its rest rotary position in the event of shrinkage of the housing. A magnet yoke () as part of the overcurrent/short-circuit current tripping device is mounted and shaped in such a way that the rotation is compensated for precisely, so that the mentioned gaps do not change despite the shrinkage.

Line circuit breaker and magnet yoke for a line circuit breaker

The invention relates to a electromechanical switching device having two movable contact elements interacting with a fixed contact. Said switching device has a housing. When viewing a fixing side from the top, said housing is divided into two areas bordering with a longitudinal side of the housing, one of the movable contact elements and the corresponding fixed contact being located in said areas, wherein each of the housing areas has a narrow partial area and a broad partial area bordering therewith. The broad partial area of the first housing area is adjacent to the narrow partial area of the second housing area and the narrow partial area of the first housing area is adjacent to the broad partial area of the second housing area. The actuation directions of the movable contact elements are directed opposite each other.

Electromechanical switching device

A modular device comprises a housing and a terminal arranged therein with a clamping screw, a pressure plate and clamping frame, a first recess on the connection side for transversely receiving a busbar passing through the housing and clamping frame, and the insulating gap between the outer edge of the clamping frame within the housing and the outer side of the adjoining closed housing side being smaller than the air insulating gap between the outer edge of the clamping frame in the region of the recess and the outer side of the adjoining housing side.

Modular device assembly with a terminal

Growing community of inventors

Maxhütte-Haidhof, Germany

Gunther Eckert