Siemens Aktiengesellschaft

Johann Bauer

Markus Meier

Bardo Koppmann

Georg Streich

Stephan Faber

Werner Harbauer

Manuela Lüftl

Peter Schlegl

Reinhard Zinner

Hans Brandl

Klaus-Dieter Paul

Joachim Hannich

Manfred Krones

Manuela Lueftl

The invention relates to an electromagnetic switching device, in particular a contactor, comprising a switching device housing () and a plug-in module which can be inserted into the latter and which contains a coil form () for a coil. A tripping element () is mounted on a housing section () of the plug-in module (). Said element is designed to mechanically actuate the contact unit () of an electric switch () for producing an economy connection. The switch () is mounted on a support structure (printed-circuit board ()) that is located in the plug-in module (), with a supporting contour () of said switch adjoining a bearing contour () of the housing section ().

Electromagnetic switching device, in particular a contactor

An electromagnetic switching device, especially a contactor, includes a base, an arc chamber removable from the base, a contact bridge support and a spring-loaded locking element. The contact bridge support projects into the arc chamber and can be displaced in a direction of actuation. The contact bridge support can be locked by the locking element when the arc chamber is taken off. The locking element is configured as a lever that is swiveled about a swiveling axis which extends in perpendicular to the direction of actuation.

Electromagnetic switching device, especially contractor, with a contact bridge support lock

A vacuum contactor includes a stationary contact and a moving contact, which can be moved in order to produce a current-carrying connection. In order to guide the moving contact during its movement in the enclosure, at least one guide element, which can be moved in a groove, is provided on the moving contact.

Vacuum contactor with movable guide element

An electromagnetic switching device includes a housing and a plug-in module which can be inserted into the housing at an insertion point in a direction of insertion. The plug-in module holds a magnetic yoke, attached to which is a coil unit. Two extensions, which point respectively to the front and to the rear in relation to the direction of insertion, are formed on the magnetic yoke. In order to retain the magnetic yoke, a retaining bracket extending transversally in relation to the direction of insertion, overlaps one of the fixing extensions and engages two retaining tongues from below, said tongues being formed as one-piece with the plug-in module.

Electromagnetic switching device, for example, contactor

A capacitor switching contactor is described which includes a standard contactor, an auxiliary switch, an input terminal block, an output terminal block, as well as resistance wires disposed between the terminal blocks, on the one hand, and the auxiliary switch, on the other hand. The resistance wires are connected to connecting terminals in chambers of the terminal blocks, and largely accommodated in the housing of the terminal blocks.

Capacitor switching contactor

Housing for electromagnetic switching device

An auxiliary switch hookup assembly in a motor contactor includes a slide member biased by a spring and forming a portion of the limiting wall for the reception of an auxiliary switch. The spring force exerted by the biasing spring can be greater than a total force exerted by restoring and contact compression springs of the motor contactor.

Auxiliary switch hookup assembly in a motor contactor

A switchgear apparatus having three switching gaps with contacts arranged thereacross for connecting three-phase electrical power to a consumer. Apparatus is described whereby a selected one of the switching gaps closes earlier than the other switching gaps during a closing cycle of the switchgear, and opens later than the other switching gaps during an opening cycle of the switchgear. The contacts across the early closing and late opening gap experience only minimal contact burnoff, thereby permitting a substantially reduced volume of contact overlay material to be provided therefor. In addition, less expensive contact material may be utilized for this contact.

Three-phase switchgear

A contact arrangement for electric switchgear is disclosed. The contact arrangement comprises a bifurcated offset contact bridge having two contact bridge parts, each of which is inserted into an opening in an actuating contact bridge carrier. Each contact bridge part rests on a first supporting surface of the opening. A spring retainer rests against the contact bridge and a compression spring is mounted between a second surface of the opening and the spring retainer. The spring retainer is guided in the contact bridge carrier against movement transverse to the direction of motion of the carrier. Each end of each contact bridge part is provided with a semicircular contact pad which, when the contact bridge parts are placed adjacent each other, form a bifurcated circular contact pad which engages with corresponding stationary contacts. Each part of the bifurcated contact bridge is provided with a recess on both sides in the area of the offset in order to maintain both contact bridge parts in close proximity with each other and to ensure proper contact engagement.

Contact arrangement for electric switchgear

A contact bridge arrangement useful particularly in electromagnetic switchgear has a set of fixed contacts and a contact bridge which can be brought into active connection therewith. The contact bridge is movably guided in a window of a contact bridge carrier being spring loaded in the direction of the fixed contacts by a spring which is braced on a support part which is carried, in the active position, on parts fixed to the housing and which is elevated by a stop in the window of the contact bridge carrier. The support part is inserted between a spring cup and the stop in the window of the contact bridge carrier from the outside of the contact bridge assembly in a direction transverse to the direction of the spring loading.

Contact bridge arrangement

An improved electromagnetic switching apparatus including a housing, a plurality of movable contact bridges mounted on a contact bridge carrier, first fixed contact elements which extend around one end of the contact bridges and are coupled to terminal elements for the first fixed contact elements, and electrically-separated second fixed contact elements disposed at the other end of the contact bridges on both sides thereof. The improvement of the invention comprises the provision of means for selectively electrically connecting the second fixed contact elements to a common terminal element.

Electro-magnetic switching apparatus having electrically separated

An electromagnetic switching apparatus including a housing, movable contact elements mounted on a plurality of contact bridges in the housing, electrically-connected fixed contact elements disposed on both sides of the contact bridges adapted for contact and electrical connection with the movable contacts and the contact bridges, and electrical insulation means for interrupting the electrical connection between the fixed contact elements and the contact bridges in two terminal positions of the contact bridge carrier. The improvement comprises at least one end of the contact bridges extending outwardly beyond the area of contact between the movable contacts and the fixed contacts. The electrical insulation means are movably supported in the switching apparatus housing so as to be operatively engageable in at least one position with the extended ends of the contact bridges for interrupting the electrical connection between at least one of the contact bridges and the fixed contact elements.

Electromagnetic switching apparatus

In the housing of an electromagnetic switching apparatus including a magnet coil and switching and non-switching magnet parts disposed within the housing, and at least one damping compression spring for biasing the non-switching magnet part in one direction in the housing, the spring having a plurality of turns of the same diameter and one end turn having a diameter greater than that of the plurality of turns for securing the spring in the housing, the improvement comprising hook-shaped projection members disposed within the housing about the periphery of the compression spring. The projection members are spaced apart from each other along a diameter of the spring by a distance which is greater than the diameter of the plurality of turns thereof but less than the diameter of the end turn. The plurality of turns of the spring are axially movable between the projection members while the end turn of the spring is engaged by the members. The compression spring is thus axially movably secured in the housing of the switching apparatus.

Housing for securing a damping compression spring in an electromagnetic

An electrical equipment apparatus which includes an equipment housing and at least one slidable mounting member for fastening the equipment to a support rail. The member is guided by guide keys provided in the equipment housing and includes a compression spring disposed in a longitudinal recess thereof which engages the member at one end and the equipment housing at the other. Barb-like, resilient stop members are formed on the mounting member and extend transversely with respect to the direction of movement thereof, and are received by recesses in the equipment housing for limiting the movement of the mounting member and equipment with respect to the housing.

Growing community of inventors

Ebermannsdorf, Germany

Johann Bauer