Siemens Aktiengesellschaft

Karl-Heinz Manthe

Bernhard Preuss

Martin Boettcher

Bernhard Pfeiffer

Gunter Seidler-Stahl

Low-voltage power switch with a switching chamber

Arc chute having three barriers for the passage of arc gasses

Power switch with an ARC quenching device

A contact arrangement of a low-voltage circuit breakeer with electrodynamic breaking or opening. In contact arrangements which contain a compression spring for pretensioning a contact lever into the make position or after a dead center position is passed, the assembly is to be simplified and the use of an assembly fixture is to be made unnecessary. The pivot bearing of a contact lever at a contact lever carrier is formed by a pan-like depression of the contact lever carrier as well as an extension of the contact lever engaging the depression. Furthermore, a stop surface for the open position of the contact lever is arranged at the contact lever carrier. A brief application of force is sufficient for connecting the contact lever to the contact lever carrier. A current-limiting low-voltage circuit breaker of compact design is thus provided.

Contact arrangement of a low-voltage circuit breaker with

A multipole low-voltage circuit breaker with an insulating material housing and arc quenching chambers. By a new mechanical design, the installation of the arc quenching devices is to be facilitated. All arc quenching chambers of a switchgear are arranged in a quenching chamber housing which is subdivided by partitions and is fastened to the insulating material housing of a circuit breaker. The quenching baffles are fastened directly to the walls of the arc quenching chambers. A low-voltage circuit breaker with an insulating material housing of compact design is thus provided.

Multipole low-voltage circuit breaker with an insulating material

A contact assembly is provided for current-limiting low-voltage circuit breakers. The contact assembly has a two-armed contact lever swivel-mounted on a central bearing pin whose lever arms are equipped at their ends with contact pieces. The contact lever is equipped with a slot for mounting on the bearing pin whose longitudinal axis extends approximately at a right angle to the longitudinal axis of contact lever. The contact lever has a stop extending at approximately a right angle to its longitudinal axis for a catch swivel-mounted on the bearing pin. The contact forces on both lever arms cannot be influenced by the swivel mount or by the drive mechanism of the contact lever, but are determined exclusively by the biasing springs.

Contact assembly for low-voltage circuit breakers with a two-arm contact

A switch with a selective release having a stroke armature activated by an electromagnet in response to a release current to actuate a switch latch. A lever arrangement encloses a stroke armature in such a fashion that it can be swiveled by the stroke armature from a rest position into a position in which the stroke armature may be rapidly moved to impact on the latch.

Switch with a selective release

An electrodynamically opening contact system including a fixed and a movable contact element. The movable contact is biased by a prestressed spring arrangement which is pivotally mounted at one end while at its other end slidably engages the movable contact element such that an overcenter or toggle action is effected.

Growing community of inventors

Berlin, Germany

Karl-Heinz Manthe