Siemens Aktiengesellschaft

J&ouml;rg-Uwe Dahl

Ludvik Godesa

Marc Liebetruth

Detlev Schmidt

Ingo Thiede

Michael Bach

Torsten Ahlert

Artur Wajnberg

Sezai T&uuml;rkmen

Ralph Hohenberger

G&uuml;nter Seidler

A drive train is for a displaceable contact on a breaker contact arrangement in an electrical power breaker. A coupling element displaceable against a stop and arranged between the moveable contact and corresponding drive element is provided with an anti-bounce device, including a catch element and a counter piece. The catch element which may be swung into a catch position as a result of the inertia exerted on the centre of gravity thereof, when the coupling element strikes the stop, includes a working surface extending in the pivoting direction to forma momentary working connection with the counter piece. A retaining spring is additionally provided on the catch element to guarantee that a rebounding of the coupling element into the position corresponding to the close state of the breaker contact arrangement does not occur.

Drive train for a displaceable contact on an electrical power breaker

A low-voltage circuit breaker has a contact arrangement, a drive mechanism for actuating the contact arrangement , and an actuating shaft, which is used for transmitting a drive force from the drive mechanism to the contact arrangement. A bearing device for the actuating shaft has at least one bearing body, which is connected to a pole component accommodating the contact arrangement. Thus a unit is formed, which can be tested independently of the other components of the circuit breaker. In the case of multipole circuit breakers, a common actuating shaft is used for all contact arrangements and pole components, which is mounted approximately in the center of the main bearing body and near the ends of the auxiliary bearing bodies.

Power circuit breaker with an actuating shaft

A switching device has a closing device and a traversing mechanism for insertion and retraction relative to an insertion frame, where the said devices can be operated only in the OFF state of the switching device. A blocking bar having a cam element that cooperates with a carrier of an OFF operator is guided by elongated holes behind an operator's console of the switching device. The carrier and the cam element work together in such a way that the OFF operator can be pulled inward when the blocking bar is operated, thus signaling to the user that the switching device is locked in the OFF state.

Insertable and retractable switching device comprising a blocking bar which prevents wrong operation

Growing community of inventors

Werder, Germany

Jörg-Uwe Dahl

Growing community of inventors

Werder, Germany

J&ouml;rg-Uwe Dahl

Jörg-Uwe Dahl