Schaltbau Gmbh

Schaltbau Aktiengesellschaft

Robert Kralik

Andrej Ignatov

Korbinian Kreuzpointner

Daniel Hammerl

Disclosed is a switch device with at least one contact point and a permanent magnetic arc blowing device which is paired with the contact point, wherein the arc blowing device has at least one second permanent magnet () as an auxiliary magnet, and the auxiliary magnet is arranged in the direct vicinity of the contact point (), such that at least one section of the magnetic field () of the auxiliary magnet () amplifies the blow-out field in the transition region.

Switch device with improved permanent magnetic arc extinction

The present invention relates to an electrical switching apparatus having at least one contact point, an arc-quenching device associated with the contact point, and an arc-blowing device to generate a magnetic blowout field. The arc-quenching device comprises a plurality of quenching elements, which are arranged distributed and spaced from each other in a first direction, wherein the quenching elements each comprise a permanent magnet. The arc arising when the contact point is opened is blown away from the contact point towards the quenching elements by the magnetic blowout field. The magnetic blowout field is at least partially generated or supported by the permanent magnets of the quenching elements. According to the invention, the permanent magnets of the quenching elements are offset with respect to each other in a second direction that is perpendicular to the first direction.

Electrical switching apparatus comprising an improved arc-quenching device

Switching devices having a contact point, and an arc extinguishing chamber are used to blow switch arcs. The arc extinguishing chamber may have an exit opening through which plasma, generated inside the switching device by a switch arc developing when the contact point opens, exits out of the switching device. Inside the extinguish chamber a first arc guide plate may be provided that extends from the contact point toward the exit opening and which guides and stretches the switch arc. The switch arc may be initially stretched beyond the dimensions of the exit opening by the first arc guide plate and then the stretching may be reduced to be within the dimensions of the exit opening by an arc guide pin projecting from the first arc guide plate.

Switching device with arc extinguishing device and arc guide

The present invention relates to a switching device with at least one contact point and an arc blow device associated with the contact point, where the arc blow device comprises at least one blow magnet for generating a magnetic blow field, and where the blow field is of such nature that a switch arc developing when the contact point opens is blown out from the contact point. It is according to the invention provided that the blow field comprises a first magnetic field area and a second magnetic field area arranged adjacent to the first magnetic field area, where the magnetic field lines of the first magnetic field area are oriented in opposite direction to the magnetic field lines of the second magnetic field area, and where the blow field further comprises a transition area which connects the first magnetic field area and the second magnetic field area with each other, where the orientation of the magnetic field lines in the transition area, each starting out from the first magnetic field area and the second magnetic field area, aligns toward the contact point so that the switch arc within the transition area is in dependence of the direction of the current, starting out from the contact point, directed either into the first magnetic field area or into the second magnetic field area and there in both cases blown in the same direction away from the contact point.

Switching device with permanent-magnetic arc extinguishment

The present invention relates to an electric switching apparatus, in particular a DC contactor. The switching apparatus has at least one switching point as well as at least one arc-quenching device that is assigned to the switching point. The arc-quenching device comprises at least one quenching element and at least one permanent magnet for influencing an arc that arises during the switching process. The arc is blown into the quenching element by a magnetic field that is created by the permanent magnet. It is provided according to the invention that the at least one permanent magnet forms at the same time the quenching element and that it is arranged and polarized in a way that the arc is attracted by the permanent magnet and thereby sucked onto the permanent magnet and quenched by said permanent magnet.

Electric switching apparatus comprising an improved arc-quenching device

Disclosed is multipolar power contactor with an electromagnetic drive having an armature, and at least two movable contacts arranged next to one another and connected to the armature. The armature is movable from an open position, where the movable contacts and the fixed contacts are not in contact with one another, into a closed position where the movable contacts come into contact with the fixed contacts. Each movable contact and a corresponding fixed contact, is assigned an arc quenching device, and a plasma barrier having a first and a second barrier is provided between the two movable contacts, whereby one of the two barriers is connected to the armature and the other of the two barriers to a stationary part of the power contactor. The first and the second barrier overlap with one another at least partially in each position of the armature between the open and the closed positions.

Multipolar power contactor

Disclosed is a DC contactor comprising a double break with two contact points, each having a fixed and a movable contact, the movable contacts arranged on a contact bridge. The contactor includes an arc extinguishing device and a blowing device configured to blow a switch arc, which forms at the first contact point when the contact points are being opened, into the arc extinguishing device, when switching takes place in the preferential current direction. A commutating plate is arranged adjacent the movable contact of the first contact point, the contact bridge and the commutating plate being electrically insulated from one another and the commutating plate being potentially connected to the fixed contact of the second contact point, so that, when switching takes place in the preferential current direction, the switch arc forming at the first contact point jumps from the contact bridge to the commutating plate by the blowing device.

Direct-current contactor with additional switching capability for AC loads and a polarity against the preferential current direction

Disclosed is an electric contactor, in particular to be used in roadways, with the stator and an armature, the armature being connected with a contact region and being movable, during a switching-on operation and/or a switching-off operation of the contactor, from a first to a second position, the contact region being connected in at least one of these positions with a counter-contact region for closing an electric circuit, wherein a pushing device is connected with the armature which is rotational relative to the armature, wherein the pushing device at least temporarily pushes the armature supportively in the movement from the first to the second position of the switching-on and/or switching-off operation.

Electric contactor with flywheel drive and method of switching an electric contactor on and/or off

Disclosed is a unidirectionally switching direct-current contactor, having a double break having two contact points, which each have a fixed contact and a movable contact, wherein the movable contacts are arranged on a contact bridge and wherein a switch arc is formed at each of the contact points when the contact points open, and including an arc quenching device and having at least one blowing device for blowing at least one of the switch arcs from the corresponding contact point. The contactor includes a jumper plate arranged adjacently to the movable contact of the first contact point, wherein the contact bridge and the jumper plate are electrically insulated from each other and the jumper plate is connected potentially to the fixed contact of the second contact point.

Unidirectionally switching DC contactor

The invention relates to a contactor for direct current and alternating current operation with at least one contact point with a fixed contact and a movable contact, at least one permanent magnet, arranged adjacent to the contact point, for the generation of a permanent magnetic blowout field and at least one coil, arranged adjacent to the contact point, for the generation of an electromagnetic blowout field, for blowing an arc that is formed when opening the contact point into at least one arc chamber. A contactor is to be provided that allows a quick and reliable separation of the contacts and consequently also a quick and reliable extinguishing of the arcs and that allows a structure with a simple design and simple manufacture. For this purpose, the contactor has at least two contact points, wherein the movable contacts are arranged on a contact bridge, at least one permanent magnet is arranged adjacent to each contact point and the permanent magnets assigned to the two contact points are polarised in opposite directions.

Contactor for direct current and alternating current operation

A contractor () having at least two spaced-apart fixed contacts () and an at least sectionwise electrically conductive, movable contact bridge () having at least two contact points (8) which are associated with the fixed contacts (). The contact bridge is adapted to be moved to a switched position by a switching force (B) and to a rest position by an opening force (V). The opening force (V) is produced by a pretensioning device (). A particularly advantageous distribution of the opening force to the two contact points and a reliable switching operation is achieved in that one contact () is arranged between the other contact () and a point where the opening force (V) acts on the contact bridge ().

Contactor with strand-free, single-interrupting current routing

A bistable contactor comprises at least two concentrically arranged coils, an armature that is movable relative to the coils, a permanent magnet that is stationary relative to the coils, and a spring element. The armature includes contacts for opening and closing a circuit. The coils move the armature and contacts between a first stable position and a second stable position. In the first stable position, the armature is held in position by the permanent magnet, and in the second stable position, the armature is biased into position by the spring element.

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Poing, Germany

Robert Kralik