EP2263246A1 - Switching device - Google Patents

Switching device

Info

Publication number
EP2263246A1
EP2263246A1 EP09717343A EP09717343A EP2263246A1 EP 2263246 A1 EP2263246 A1 EP 2263246A1 EP 09717343 A EP09717343 A EP 09717343A EP 09717343 A EP09717343 A EP 09717343A EP 2263246 A1 EP2263246 A1 EP 2263246A1
Authority
EP
European Patent Office
Prior art keywords
switching device
switching
bimetallic element
heat insulator
conductor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09717343A
Other languages
German (de)
French (fr)
Other versions
EP2263246B1 (en
Inventor
Adolf Tetik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eaton GmbH
Original Assignee
Moeller Gebaudeautomation GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Moeller Gebaudeautomation GmbH filed Critical Moeller Gebaudeautomation GmbH
Priority to PL09717343T priority Critical patent/PL2263246T3/en
Priority to SI200930096T priority patent/SI2263246T1/en
Publication of EP2263246A1 publication Critical patent/EP2263246A1/en
Application granted granted Critical
Publication of EP2263246B1 publication Critical patent/EP2263246B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H01H71/164—Heating elements

Definitions

  • the invention relates to a switching device according to the preamble of claim 1.
  • switching devices which in case of excessive currents in a pipeline network, which continue over a predetermined time, disconnect this line network from a supply network to prevent the further supply of electrical current.
  • damage such as a cable fire, which could arise due to the increased heating of the conductors due to the excessive current flow, avoided.
  • Such switching devices therefore have a so-called.
  • Overcurrent tripping device which comprises approximately a bimetallic element, which is heated under the action of the current flow in the line network, whereby the bimetallic element is bent.
  • the bimetal triggers a mechanical release device, which separates the switching contacts of the switching device, and prevents the further flow of current.
  • a disadvantage of such known switching devices that especially at a low overcurrent, the accuracy of the triggering of the switching device and the reproducibility of the tripping of the switching device is very low.
  • known switching devices often the problem arises that - especially at low overcurrents, in which a triggering of the switching device should take place only after quite some time - the switching device is triggered too late. This leads to a threat to people and equipment.
  • the object of the invention is therefore to provide a switching device of the type mentioned, with which the mentioned disadvantages can be avoided, and with which the accuracy and the degree of reproducibility of the triggering of the switching device, as well as the adjustment of the overcurrent tripping device can be improved.
  • This is achieved by the features of claim 1 according to the invention.
  • the heat dissipation or cooling of the bimetallic element can be reduced by fixing it.
  • the removal of heat or cooling of the bimetallic element on its attachment causes the bending of the bimetallic depends not only on the size or height of the current in the current path through the switching device, but also of other sizes, which are not necessarily in relation to the Amount of current are, which has the consequence that the release of known switching devices can be inaccurate and little reproducible. Due to the features of claim 1, the accuracy and the degree of reproducibility of the triggering of the switching device by the Bimetal element can be increased. This allows the adjustment of the bimetallic element or the
  • Overcurrent tripping device can be improved.
  • Fig. 1 shows a preferred embodiment of a switching device according to the invention in axonometric exploded view
  • Fig. 2 shows a preferred embodiment of an arrangement of bimetallic element and the first
  • FIG. 3 shows the arrangement according to FIG. 2 in uncut axonometric representation
  • FIG. 4 shows a detail of the arrangement of FIG. 2 in side elevation with partially broken
  • FIG. 5 shows the illustration according to FIG. 2 with an additional component
  • Fig. 6 shows the illustration of FIG. 3 with an additional component.
  • Fig. 1 shows a switching device 1, preferably circuit breaker, with at least one
  • Switching contacts 4 in a closed position, a current path between the
  • Bimetal element 7 includes, which is heated by the flow of electric current, wherein in
  • Area of attachment 8 of the bimetallic element 7 at least one heat insulator 9 for
  • the heat dissipation or cooling of the bimetallic element 7 via its attachment 8 causes the bending of the bimetallic element 7 depends not only on the size or height of the current in the current path through the switching device 1, but also of other sizes, which are not mandatory in relation to the height of the
  • Fig. 1 shows a series of modules of a preferred embodiment of a switching device 1 according to the invention in axonometric exploded view. Shown is an embodiment of a switching device 1 with three switching paths or current paths, wherein any predeterminable number of switching paths or switchable current paths can be provided.
  • switching devices 1 according to the invention are provided with one, two, three or four current paths. According to the number of current paths respectively the same number of input terminals 2 and output terminals 3 are provided.
  • FIGS. 1 to 4 only parts of the input terminals 2 or output terminals 3 which are fixed to the housing are shown.
  • the respective input terminals 2 and output terminals 3 generally include in addition to the illustrated parts, in each case at least one clamping screw, and preferably in each case at least one movable by means of the clamping screw terminal cage.
  • the switching device 1 comprises an insulating material housing, which in the preferred embodiment comprises a lower housing shell 15 and an upper housing shell 16.
  • the at least one first switching contact 4 is in a closed position on the at least one second switching contact, which is not visible in the embodiment shown within the assembly of the arc extinguishing chamber 14.
  • the bimetallic element 7 is fastened to a specifiable location within the scarf device 1. It is preferably provided - as shown - that the bimetallic element 7 is attached to a first conductor 10 of the current path, which is preferably associated with the input terminal 2 and / or the output terminal 3. In the illustrated preferred embodiment, the bimetallic element 7 is flowed through directly by electricity, so is itself part of the current path, and is directly heated by the stream. However, it can also be provided that the bimetallic element is heated completely or additionally indirectly by, for example, a current-carrying conductor is arranged on the bimetal element 7. By attaching the bimetallic element 7 to the first conductor 10, the preferred embodiment is advantageously supported, as this leads to a particularly simple and cost-effectively manufacturable construction.
  • the bimetallic element 7 With increasing heating of the bimetallic element 7 due to the current flow, this is bent more and more.
  • the bimetallic element 7 causes a tripping of the overcurrent tripping device 6, which either directly or via another, cooperating with the overcurrent tripping device 6 or controlled by this mechanical release device, the switching contacts 4 of the switching device 1 separates, and prevents the further flow of current.
  • the illustrated preferred embodiment of a switching device 1 has a folding lever 18 for this purpose.
  • the folding lever 18 can be controlled directly from the bimetallic element 7. It is preferably provided that the bimetallic element 7 - as shown in FIGS.
  • the trip shaft 13 is also associated with a preferably further arranged in the switching device 1 short-circuit release 19, and this short-circuit release 19 is adapted to actuate the trip shaft 13 by means of a folding lever 18.
  • the switching mechanism 5 is used for manually opening and closing the switching contacts 4 by means of the actuating lever 17, as well as for disconnecting the switching contacts 4 when the overcurrent tripping device 6 or the short-circuit release 19 is triggered.
  • FIGS. 2 to 6 show different views of a preferred embodiment of an arrangement of bimetallic element 7 and first switching contact 4, wherein in the region of a fastening 8 of the bimetallic element 7 at least one heat insulator 9 is arranged to reduce the heat dissipation of the bimetallic element 7.
  • the bimetallic element 7 is fastened with a first end 21 to the first conductor 10, wherein in addition to the illustrated fastening by means of a connecting rivet 12, the fastening by means of screws, clamps, welding or soldering can be provided.
  • a flexible conductor 20 is arranged, which connects the bimetallic element 7 with the first switching contact 4.
  • any type of heat insulator 9 may be provided.
  • insulators comprising glass and / or ceramic can be provided.
  • the heat insulator 9 is formed as a metallic electrical conductor, wherein further preferably provided that the heat insulator 9 are formed to increase the electrical resistance in the region of the attachment 8. This can be achieved in addition to the reduction of heat dissipation and cooling of the bimetallic element 7 through the first conductor 10 and the input or output terminal 2, 3 in addition, that the bimetallic element 7 is additionally heated by the heat insulator 9.
  • the heat insulator 9 comprises a plate 11, which is arranged between the first conductor 10 and the bimetal element 7.
  • the plate 11 has a thermal conductivity which is less than 350 W / (m * K), in particular less than 200 W / (m * K), preferably less than 85 W / (m * K).
  • W denotes the power in watts
  • m the linear expansion in meters
  • K the absolute temperature in Kelvin
  • * the operator for a multiplication.
  • the plate 11 may comprise any material having a lower thermal conductivity than copper, according to a further preferred embodiment already shown may be provided that the plate 11 is still a metallic electrical conductor in the technical sense, therefore, a specific electrical resistance of less than 0.5 ⁇ * mm 2 / m, preferably less than 0.2 ⁇ * mm 2 / m, but greater than the specific electrical resistance of copper (about 0.01724 ⁇ * mm 2 / m).
  • the plate 11 comprising at least one material selected from the group: aluminum, brass, zinc, steel, preferably stainless Steel, nickel, iron, platinum, tin, tantalum, lead and / or titanium, is formed.
  • any type of attachment of the bimetallic element 7 may be provided with the first conductor 10.
  • the bimetallic element 7 is connected to the first conductor 10 by means of at least one connecting rivet 12.
  • the heat insulator 9 comprises only the at least one connecting rivet 12, and is free of plates 11 between the bimetallic element 7 and the first conductor 10.
  • the connecting rivet 12 When forming the connecting rivet 12, it is preferably provided that it has a thermal conductivity which is less than 350 W / (m * K), in particular less than 250 W / (m * K), preferably less than 150 W / (m * K ) is.
  • W denotes the power in watts
  • m the linear expansion in meters
  • K the absolute temperature in Kelvin
  • * the operator for a multiplication.
  • the connecting rivet 12 may comprise any material with a lower thermal conductivity than copper, wherein according to a further preferred embodiment already shown, it may be provided that the connecting rivet 12 is still a metallic electrical conductor in the technical sense, therefore a resistivity less than 0.5 ⁇ * mm 2 / m.
  • the possibility of a ductile mechanical deformability is also essential for the use of a material for use in a connecting rivet 12.
  • the connecting rivets 12 comprising at least one material selected from the group: aluminum, brass, zinc, steel, preferably stainless steel, nickel, iron, platinum, tin, tantalum, lead and or titanium, is formed. It is particularly preferred that the connecting rivet 12 comprises brass, wherein hiebei any type of brass alloy comprising copper and zinc may be provided. Further embodiments of the invention have only a part of the features described, wherein each feature combination, in particular of various described embodiments, may be provided.

Landscapes

  • Thermally Actuated Switches (AREA)
  • Contacts (AREA)

Abstract

The invention relates to a switching device (1), preferably a power switch, comprising at least one input terminal (2) and at least one output terminal (3) for connecting electrical conductors, and a first switching contact (4) and a second switching contact (5), said switching contacts (4, 5) closing, in a closed position, a current path between the input terminal (2) and the output terminal (3). An overcurrent release device is provided for separating the first switching contact (4) and the second switching contact (5), said overcurrent release device (6) comprising at least one bimetal element (7) which is heated by the electrical current conduction. In order to improve the precision and the degree of reproducibility of the triggering of the switching device, and the adjustment of the overcurrent release device, at least one heat insulator (9) is arranged in the region of a fixing point (8) of the bimetal element (7), in order to reduce the heat dissipation from the bimetal element (7).

Description

Schaltgerät switchgear
Die Erfindung betrifft ein Schaltgerät gemäß dem Oberbegriff des Patentanspruches 1. Es sind Schaltgeräte bekannt, welche bei überhöhten Strömen in einem Leitungsnetz, welche über eine vorgebbare Zeit andauern, dieses Leitungsnetz von einem Versorgungsnetz trennen, um die weitere Zufuhr elektrischen Stromes zu verhindern. Dadurch wird ein Schaden, etwa ein Kabelbrand, welcher aufgrund der erhöhten Erwärmung der Leiter zufolge des überhöhten Stromflusses, entstehen könnte, vermieden. Derartige Schaltgeräte weisen daher eine sog. Überstromauslösevorrichtung auf, welche etwa ein Bimetallelement umfasst, welches unter der Einwirkung des Stromflusses in dem Leitungsnetz erwärmt wird, wodurch das Bimetallelement verbogen wird. Bei einem vorgebbaren Grad der Verbiegung des Bimetallelements, welcher proportional einer vorgebbaren Erwärmung des Leitungsnetzes ist, löst das Bimetallelement eine mechanische Auslösevorrichtung aus, welche die Schaltkontakte des Schaltgeräts trennt, und den weiteren Stromfluss verhindert. Nachteilig an derartigen bekannten Schaltgeräten ist, dass vor allem bei einem nur geringen Überstrom die Genauigkeit der Auslösung des Schaltgeräts sowie die Reproduzierbarkeit der Auslösung des Schaltgeräts sehr gering ist. Bei bekannten Schaltgeräten tritt oftmals das Problem auf, dass - vor allem bei geringen Überströmen, bei welchen eine Auslösung des Schaltgeräts erst nach geraumer Zeit erfolgen soll - das Schaltgerät zu spät ausgelöst wird. Dies führt zu einer Gefährdung von Menschen und Anlagen.The invention relates to a switching device according to the preamble of claim 1. There are switching devices are known, which in case of excessive currents in a pipeline network, which continue over a predetermined time, disconnect this line network from a supply network to prevent the further supply of electrical current. As a result, damage, such as a cable fire, which could arise due to the increased heating of the conductors due to the excessive current flow, avoided. Such switching devices therefore have a so-called. Overcurrent tripping device, which comprises approximately a bimetallic element, which is heated under the action of the current flow in the line network, whereby the bimetallic element is bent. At a specifiable degree of bending of the bimetallic element, which is proportional to a predeterminable heating of the line network, the bimetal triggers a mechanical release device, which separates the switching contacts of the switching device, and prevents the further flow of current. A disadvantage of such known switching devices that especially at a low overcurrent, the accuracy of the triggering of the switching device and the reproducibility of the tripping of the switching device is very low. In known switching devices often the problem arises that - especially at low overcurrents, in which a triggering of the switching device should take place only after quite some time - the switching device is triggered too late. This leads to a threat to people and equipment.
Aufgabe der Erfindung ist es daher ein Schaltgerät der eingangs genannten Art anzugeben, mit welchem die genannten Nachteile vermieden werden können, und mit welchem die Genauigkeit und der Grad der Reproduzierbarkeit der Auslösung des Schaltgeräts, sowie die Justage der Überstromauslösevorrichtung verbessert werden kann. Erfindungsgemäß wird dies durch die Merkmale des Patentanspruches 1 erreicht. Dadurch kann die Wärmeabfuhr bzw. Kühlung des Bimetallelements über dessen Befestigung vermindert werden. Die Wärmeabfuhr bzw. Kühlung des Bimetallelements über dessen Befestigung führt dazu, dass die Verbiegung des Bimetallelements nicht nur von der Größe bzw. Höhe des Stromes in dem Strompfad durch das Schaltgerät abhängt, sondern eben auch von weiteren Größen, welche nicht zwingend in Relation zu der Höhe des Stromes stehen, was zur Folge hat, dass die Auslösung bekannter Schaltgeräte ungenau und wenig reproduzierbar sein kann. Durch die Merkmale des Patentanspruches 1 kann die Genauigkeit und der Grad der Reproduzierbarkeit der Auslösung des Schaltgeräts durch das Bimetallelement erhöht werden. Dadurch kann die Justage des Bimetallelements bzw. derThe object of the invention is therefore to provide a switching device of the type mentioned, with which the mentioned disadvantages can be avoided, and with which the accuracy and the degree of reproducibility of the triggering of the switching device, as well as the adjustment of the overcurrent tripping device can be improved. This is achieved by the features of claim 1 according to the invention. As a result, the heat dissipation or cooling of the bimetallic element can be reduced by fixing it. The removal of heat or cooling of the bimetallic element on its attachment causes the bending of the bimetallic depends not only on the size or height of the current in the current path through the switching device, but also of other sizes, which are not necessarily in relation to the Amount of current are, which has the consequence that the release of known switching devices can be inaccurate and little reproducible. Due to the features of claim 1, the accuracy and the degree of reproducibility of the triggering of the switching device by the Bimetal element can be increased. This allows the adjustment of the bimetallic element or the
Überstromauslösevorrichtung verbessert werden.Overcurrent tripping device can be improved.
Die Unteransprüche, welche ebenso wie der Patentanspruch 1 gleichzeitig einen Teil derThe dependent claims, which as well as the patent claim 1 at the same time a part of
Beschreibung bilden, betreffen weitere vorteilhafte Ausgestaltungen der Erfindung.Describe form, relate to further advantageous embodiments of the invention.
Die Erfindung wird unter Bezugnahme auf die beigeschlossenen Zeichnungen, in welchen lediglich bevorzugte Ausführungsformen beispielhaft dargestellt sind, näher beschrieben.The invention will be described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example.
Dabei zeigt:Showing:
Fig. 1 eine bevorzugte Ausführungsform eines erfindungsgemäßen Schaltgeräts in axonometrischer Explosionsdarstellung;Fig. 1 shows a preferred embodiment of a switching device according to the invention in axonometric exploded view;
Fig. 2 eine bevorzugte Ausführungsform einer Anordnung aus Bimetallelement und erstemFig. 2 shows a preferred embodiment of an arrangement of bimetallic element and the first
Schaltkontakt in teilweise geschnittener axonometrischer Darstellung;Switching contact in a partially cut axonometric view;
Fig. 3 die Anordnung gemäß Fig. 2 in ungeschnittener axonometrischer Darstellung;FIG. 3 shows the arrangement according to FIG. 2 in uncut axonometric representation; FIG.
Fig. 4 ein Detail der Anordnung gemäß Fig. 2 im Seitenriss mit bereichsweise aufgebrochenerFig. 4 shows a detail of the arrangement of FIG. 2 in side elevation with partially broken
Darstellung;Presentation;
Fig. 5 die Darstellung gemäß Fig. 2 mit einem zusätzlichen Bauteil; undFIG. 5 shows the illustration according to FIG. 2 with an additional component; FIG. and
Fig. 6 die Darstellung gemäß Fig. 3 mit einem zusätzlichen Bauteil.Fig. 6 shows the illustration of FIG. 3 with an additional component.
Die Fig. 1 zeigt ein Schaltgerät 1, vorzugsweise Leistungsschalter, mit wenigstens einerFig. 1 shows a switching device 1, preferably circuit breaker, with at least one
Eingangsklemme 2 und wenigstens einer Ausgangsklemme 3 zum Anschluss elektrischerInput terminal 2 and at least one output terminal 3 for connecting electrical
Leiter, sowie mit einem ersten Schaltkontakt 4 und einem zweiten Schaltkontakt, wobei dieLadder, and with a first switching contact 4 and a second switching contact, wherein the
Schaltkontakte 4 in einer geschlossenen Stellung einen Strompfad zwischen derSwitching contacts 4 in a closed position, a current path between the
Eingangsklemme 2 und der Ausgangklemme 3 schließen, wobei eineClose input terminal 2 and output terminal 3, with one
Überstromauslösevorrichtung 6 zum Trennen des ersten Schaltkontaktes 4 und des zweitenOvercurrent tripping device 6 for disconnecting the first switching contact 4 and the second
Schaltkontaktes vorgesehen ist, und wobei die Überstromauslösevorrichtung 6 wenigstens einSwitching contact is provided, and wherein the overcurrent tripping device 6 at least one
Bimetallelement 7 umfasst, welches durch den elektrischen Stromfluss beheizt ist, wobei imBimetal element 7 includes, which is heated by the flow of electric current, wherein in
Bereich einer Befestigung 8 des Bimetallelements 7 wenigstens ein Wärmeisolator 9 zurArea of attachment 8 of the bimetallic element 7 at least one heat insulator 9 for
Verminderung der Wärmeabfuhr von dem Bimetallelement 7 angeordnet ist.Reduction of heat dissipation from the bimetallic element 7 is arranged.
Dadurch kann die Wärmeabfuhr bzw. Kühlung des Bimetallelements 7 über dessenAs a result, the heat dissipation or cooling of the bimetallic element 7 via its
Befestigung 8 vermindert werden. Die Wärmeabfuhr bzw. Kühlung des Bimetallelements 7 über dessen Befestigung 8 führt dazu, dass die Verbiegung des Bimetallelements 7 nicht nur von der Größe bzw. Höhe des Stromes in dem Strompfad durch das Schaltgerät 1 abhängt, sondern eben auch von weiteren Größen, welche nicht zwingend in Relation zu der Höhe desAttachment 8 are reduced. The heat dissipation or cooling of the bimetallic element 7 via its attachment 8 causes the bending of the bimetallic element 7 depends not only on the size or height of the current in the current path through the switching device 1, but also of other sizes, which are not mandatory in relation to the height of the
Stromes stehen, was zur Folge hat, dass die Auslösung bekannter Schaltgeräte 1 ungenau und wenig reproduzierbar sein kann. Durch die erfindungsgemäßen Merkmale kann die Genauigkeit und der Grad der Reproduzierbarkeit der Auslösung des Schaltgeräts 1 durch das Bimetallelement 7 erhöht werden. Dadurch kann die Justage des Bimetallelements 7 bzw. der Überstromauslösevorrichtung 6 verbessert werden.Electricity stand, which has the consequence that the release of known switching devices 1 can be inaccurate and little reproducible. Due to the features of the invention, the Accuracy and the degree of reproducibility of the triggering of the switching device 1 by the bimetallic element 7 can be increased. As a result, the adjustment of the bimetallic element 7 or the overcurrent release device 6 can be improved.
Fig. 1 zeigt eine Reihe von Baugruppen einer bevorzugten Ausführungsform eines erfindungsgemäßen Schaltgeräts 1 in axonometrischer Explosionsdarstellung. Dargestellt ist eine Ausführung eines Schaltgeräts 1 mit drei Schaltstrecken bzw. Strompfaden, wobei jede vorgebbare Anzahl an Schaltstrecken bzw. schaltbaren Strompfaden vorgesehen sein kann. Vorzugweise sind erfϊndungsgemäße Schaltgeräte 1 mit einem, zwei, drei oder vier Strompfaden vorgesehen. Entsprechend der Anzahl an Strompfaden sind jeweils die selbe Anzahl an Eingangsklemmen 2 bzw. Ausgangsklemmen 3 vorgesehen. In den Fig. 1 bis 4 sind jeweils lediglich gehäusefeste Teile der Eingangsklemmen 2 bzw. Ausgangsklemmen 3 dargestellt. Die betreffenden Eingangsklemmen 2 bzw. Ausgangsklemmen 3 umfassen in Regel zusätzlich zu den dargestellten Teilen, jeweils wenigstens eine Klemmschraube, sowie bevorzugt jeweils wenigstens ein mittels der Klemmschraube bewegliche Klemmenkäfig. Das Schaltgerät 1 umfasst in der dargestellten bevorzugten Ausführung ein Isolierstoffgehäuse, welches in der bevorzugten Ausführungsform eine untere Gehäuseschale 15 und eine obere Gehäuseschale 16 umfasst. Der wenigstens eine erste Schaltkontakt 4 liegt in einer geschlossenen Stellung auf dem wenigstens einen zweiten Schaltkontakt, welcher bei der dargestellten Ausführungsform nicht sichtbar innerhalb der Baugruppe der Lichtbogenlöschkammer 14 angeordnet ist.Fig. 1 shows a series of modules of a preferred embodiment of a switching device 1 according to the invention in axonometric exploded view. Shown is an embodiment of a switching device 1 with three switching paths or current paths, wherein any predeterminable number of switching paths or switchable current paths can be provided. Preferably, switching devices 1 according to the invention are provided with one, two, three or four current paths. According to the number of current paths respectively the same number of input terminals 2 and output terminals 3 are provided. In FIGS. 1 to 4, only parts of the input terminals 2 or output terminals 3 which are fixed to the housing are shown. The respective input terminals 2 and output terminals 3 generally include in addition to the illustrated parts, in each case at least one clamping screw, and preferably in each case at least one movable by means of the clamping screw terminal cage. In the illustrated preferred embodiment, the switching device 1 comprises an insulating material housing, which in the preferred embodiment comprises a lower housing shell 15 and an upper housing shell 16. The at least one first switching contact 4 is in a closed position on the at least one second switching contact, which is not visible in the embodiment shown within the assembly of the arc extinguishing chamber 14.
Erfindungsgemäß ist vorgesehen, dass das Bimetallelement 7 an einer vorgebbaren Stelle innerhalb des Schalgeräts 1 befestigt ist. Bevorzugt ist - wie dargestellt - vorgesehen, dass das Bimetallelement 7 an einem ersten Leiter 10 des Strompfades befestigt ist, welcher vorzugsweise der Eingangsklemme 2 und/oder der Ausgangsklemme 3 zugeordnet ist. Bei der dargestellten bevorzugten Ausführungsform wird das Bimetallelement 7 direkt von Strom durchflössen, ist also selbst Teil des Strompfades, und wird unmittelbar vom Strom erwärmt. Es kann jedoch auch vorgesehen sein, dass das Bimetallelement vollständig oder zusätzlich indirekt beheizt wird, indem etwa ein stromdurchflossener Leiter auf dem Bimetallelement 7 angeordnet ist. Durch die Befestigung des Bimetallelements 7 an dem ersten Leiter 10 wird die bevorzugte Ausführungsform vorteilhaft unterstützt, da dies zu einer besonders einfachen und kostenschonend herstellbaren Konstruktion führt.According to the invention, it is provided that the bimetallic element 7 is fastened to a specifiable location within the scarf device 1. It is preferably provided - as shown - that the bimetallic element 7 is attached to a first conductor 10 of the current path, which is preferably associated with the input terminal 2 and / or the output terminal 3. In the illustrated preferred embodiment, the bimetallic element 7 is flowed through directly by electricity, so is itself part of the current path, and is directly heated by the stream. However, it can also be provided that the bimetallic element is heated completely or additionally indirectly by, for example, a current-carrying conductor is arranged on the bimetal element 7. By attaching the bimetallic element 7 to the first conductor 10, the preferred embodiment is advantageously supported, as this leads to a particularly simple and cost-effectively manufacturable construction.
Mit steigender Erwärmung des Bimetallelements 7 aufgrund des Stromflusses, wird dieses immer weiter verbogen. Bei einem vorgebbaren Grad der Verbiegung des Bimetallelements 7, welcher proportional einer vorgebbaren Erwärmung des Leitungsnetzes ist, verursacht das Bimetallelement 7 eine Auslösung der Überstromauslösevorrichtung 6, welche entweder direkt, oder aber über eine weitere, mit der Überstromauslösevorrichtung 6 zusammenwirkende bzw. von dieser gesteuerte mechanische Auslösevorrichtung die Schaltkontakte 4 des Schaltgeräts 1 trennt, und den weiteren Stromfluss verhindert. Die dargestellte bevorzugte Ausführungsform eines Schaltgeräts 1 weist hiezu einen Klapphebel 18 auf. Der Klapphebel 18 kann dabei direkt von dem Bimetallelement 7 angesteuert werden. Bevorzugt ist vorgesehen, dass das Bimetallelement 7 - wie in den Fig. 5 und 6 dargestellt - eine Justierschraube 23 aufweist, und dass die Justierschraube 23 bei einer vorgebbaren Verbiegung des Bimetallelements 7 die Auslösewelle 13 betätigt. Mittels der Justierschraube 23 kann auch die für eine Betätigung der Auslösewelle 13 notwendige Verbiegung des Bimetallelements 7 vorgegeben bzw. justiert werden. Weiters ist bevorzugt vorgesehen, dass die Auslösewelle 13 auch einem vorzugsweise weiters in dem Schaltgerät 1 angeordneten Kurzschlussauslöser 19 zugeordnet ist, und dieser Kurzschlussauslöser 19 dazu ausgebildet ist mittels eines Klapphebels 18 die Auslösewelle 13 zu betätigen. Bei einem vorgebbaren Maß der Verbiegung des Bimetallelements 7 bewegt dieses mit der Justierschraube 23 die Auslösewelle 13, welche das Schaltschloss 5 betätigt. Das Schaltschloss 5 dient zum manuellen Öffnen und Schließen der Schaltkontakte 4 mittels des Betätigungshebels 17, sowie zum Trennen der Schaltkontakte 4 bei Auslösung der Überstromauslösevorrichtung 6 bzw. des Kurzschlussauslösers 19.With increasing heating of the bimetallic element 7 due to the current flow, this is bent more and more. At a predeterminable degree of bending of the bimetallic element 7, which is proportional to a predeterminable heating of the pipeline network, the bimetallic element 7 causes a tripping of the overcurrent tripping device 6, which either directly or via another, cooperating with the overcurrent tripping device 6 or controlled by this mechanical release device, the switching contacts 4 of the switching device 1 separates, and prevents the further flow of current. The illustrated preferred embodiment of a switching device 1 has a folding lever 18 for this purpose. The folding lever 18 can be controlled directly from the bimetallic element 7. It is preferably provided that the bimetallic element 7 - as shown in FIGS. 5 and 6 - has an adjusting screw 23, and that the adjusting screw 23, the tripping shaft 13 actuated at a predetermined deflection of the bimetallic element 7. By means of the adjusting screw 23 and the necessary for actuation of the triggering shaft 13 bending of the bimetallic element 7 can be set or adjusted. Furthermore, it is preferably provided that the trip shaft 13 is also associated with a preferably further arranged in the switching device 1 short-circuit release 19, and this short-circuit release 19 is adapted to actuate the trip shaft 13 by means of a folding lever 18. With a predeterminable degree of bending of the bimetallic element 7 moves this with the adjusting screw 23, the trip shaft 13 which actuates the switching mechanism 5. The switching mechanism 5 is used for manually opening and closing the switching contacts 4 by means of the actuating lever 17, as well as for disconnecting the switching contacts 4 when the overcurrent tripping device 6 or the short-circuit release 19 is triggered.
Die Fig. 2 bis 6 zeigen unterschiedliche Ansichten einer bevorzugten Ausführungsform einer Anordnung aus Bimetallelement 7 und erstem Schaltkontakt 4, wobei im Bereich einer Befestigung 8 des Bimetallelements 7 wenigstens ein Wärmeisolator 9 zur Verminderung der Wärmeabfuhr von dem Bimetallelement 7 angeordnet ist. Das Bimetallelement 7 ist mit einem ersten Ende 21 an dem ersten Leiter 10 befestigt, wobei neben der dargestellten Befestigung mittels einer Verbindungsniete 12 auch die Befestigung mittels Schrauben, Klemmen, Schweißen oder Löten vorgesehen sein kann. An dem, dem ersten Ende 21 gegenüber liegenden zweiten Ende 22 des Bimetallelements 7 ist ein flexibler Leiter 20 angeordnet, welcher das Bimetallelement 7 mit dem ersten Schaltkontakt 4 verbindet. Zur Verminderung der Wärmeabfuhr von dem Bimetallelement 7 kann jede Art eines Wärmeisolators 9 vorgesehen sein. Etwa bei Verwendung zusammen mit einem indirekt beheizten Bimetallelement 7 können etwa Isolatoren umfassend Glas und/oder Keramik vorgesehen sein. Bei der bevorzugten dargestellten Ausführungsform, bei welcher das Bimetallelement 7 im direkten Strompfad stromdurchflossen wird, ist bevorzugt vorgesehen, dass der Wärmeisolator 9 als metallischer elektrischer Leiter ausgebildet ist, wobei weiters bevorzugt vorgesehen ist, dass der Wärmeisolator 9 zur Erhöhung des elektrischen Widerstandes im Bereich der Befestigung 8 ausgebildet sind. Dadurch kann neben der Verminderung der Wärmeabfuhr bzw. Kühlung des Bimetallelements 7 durch den ersten Leiter 10 bzw. die Eingangs- bzw. Ausgangsklemme 2, 3 zusätzlich erreicht werden, dass das Bimetallelement 7 durch den Wärmeisolator 9 zusätzlich erwärmt wird. Da diese zusätzliche Erwärmung am ersten Ende 21, und somit besonders weit entfernt vom zweiten Ende 22 stattfindet, ist die mechanische Wirkung, welche diese zusätzliche Erwärmung in Form einer vermehrten Verbiegung, sowie eines vergrößerten Drehmomentes, welches das Bimetallelement 7 aufzubringen im Stande ist, besonders hoch. Dadurch kann nicht nur die mechanische Wirksamkeit des Bimetallelements 7 erhöht werden, sondern darüber hinaus die Auslösegenauigkeit durch die weitere Verminderung des Einflusses äußerer physikalischer Einflüsse auf die Erwärmung des Bimetallelements 7 verbessert werden. Besonders bevorzugt, und wie in den Fig. 1 bis 4 dargestellt ist vorgesehen, dass der Wärmeisolator 9 eine Platte 11 umfasst, welche zwischen dem ersten Leiter 10 und dem Bimetallelement 7 angeordnet ist. Durch eine solche Platte 11 bzw. ein solches Blech kann sowohl eine hohe mechanische Stabilität, als auch ein hohes Maß an thermischer Isolation erreicht werden. Bevorzugt ist vorgesehen, dass die Platte 11 eine Wärmeleitfähigkeit aufweist, welche kleiner als 350 W/(m*K), insbesondere kleiner als 200 W/(m*K), vorzugsweise kleiner als 85 W/(m*K), ist. „W" bezeichnet dabei die Leistung in Watt, „m" die Längenausdehnung in Meter, „K" die absolute Temperatur in Kelvin, und „*" den Operator für eine Multiplikation. Dadurch ist die Wärmeabfuhr über die Platte geringer als die Wärmeabfuhr bei direktem Kontakt mit dem - in der Regel aus Kupfer gebildeten - ersten Leiter 10. Diesbezüglich kann vorgesehen sein, dass die Platte 11 jeden Werkstoff mit einem geringeren Wärmeleitwert als Kupfer umfassen kann, wobei gemäß einer bereits dargestellten weiteren bevorzugten Ausfuhrungsform vorgesehen sein kann, dass die Platte 11 weiterhin ein metallischer elektrischer Leiter im technischen Sinn ist, daher einen spezifischen elektrischen Widerstand kleiner als 0,5 Ω*mm2/m, vorzugsweise kleiner als 0,2 Ω*mm2/m, aber größer als der spezifische elektrische Widerstand von Kupfer (ca. 0,01724 Ω*mm2/m) aufweist. Bei den bevorzugten Ausführungsformen eines erfindungsgemäßen Schaltgeräts 1 kann daher vorgesehen sein, dass die Platte 11 umfassend wenigstens einen Werkstoff ausgewählt aus der Gruppe: Aluminium, Messing, Zink, Stahl, vorzugsweise nicht rostender Stahl, Nickel, Eisen, Platin, Zinn, Tantal, Blei und/oder Titan, ausgebildet ist. Besonders bevorzugt ist hiebei die Ausführung der Platte 11 umfassend Stahl, vorzugsweise nicht rostender Stahl, wodurch ein besonders vorteilhaftes Gleichgewicht aus elektrischer Leitfähigkeit, Widerstand und thermischer Wärmeisolation erreicht werden kann. Weiters weist Stahl eine gute mechanische Bearbeitbarkeit und geringe Kosten auf. Wie bereits dargelegt, kann jede Art der Befestigung des Bimetallelements 7 mit dem ersten Leiter 10 vorgesehen sein. Besonders bevorzugt und wie in den Fig. 1 bis 4 dargestellt ist vorgesehen, dass das Bimetallelement 7 mittels wenigstens einer Verbindungsniete 12 mit dem ersten Leiter 10 verbunden ist. Um die Wirkung des Wärmeisolators 9 noch zusätzlich zu steigern ist bevorzugt vorgesehen, dass der Wärmeisolator 9 die Verbindungsniete 12 umfasst. Es kann jedoch auch vorgesehen sein, dass der Wärmeisolator 9 lediglich die wenigstens eine Verbindungsniete 12 umfasst, und frei von Platten 11 zwischen dem Bimetallelement 7 und dem ersten Leiter 10 ist.2 to 6 show different views of a preferred embodiment of an arrangement of bimetallic element 7 and first switching contact 4, wherein in the region of a fastening 8 of the bimetallic element 7 at least one heat insulator 9 is arranged to reduce the heat dissipation of the bimetallic element 7. The bimetallic element 7 is fastened with a first end 21 to the first conductor 10, wherein in addition to the illustrated fastening by means of a connecting rivet 12, the fastening by means of screws, clamps, welding or soldering can be provided. At the first end 21 opposite the second end 22 of the bimetallic element 7, a flexible conductor 20 is arranged, which connects the bimetallic element 7 with the first switching contact 4. To reduce the heat dissipation from the bimetallic element 7, any type of heat insulator 9 may be provided. When used together with an indirectly heated bimetallic element 7, for example, insulators comprising glass and / or ceramic can be provided. In the preferred illustrated embodiment, in which the Bimetal element 7 is flowed through current in the direct current path, it is preferably provided that the heat insulator 9 is formed as a metallic electrical conductor, wherein further preferably provided that the heat insulator 9 are formed to increase the electrical resistance in the region of the attachment 8. This can be achieved in addition to the reduction of heat dissipation and cooling of the bimetallic element 7 through the first conductor 10 and the input or output terminal 2, 3 in addition, that the bimetallic element 7 is additionally heated by the heat insulator 9. Since this additional heating takes place at the first end 21, and thus particularly far away from the second end 22, the mechanical effect which this additional heating in the form of increased bending, as well as an increased torque, which is able to apply the bimetallic element 7, is particularly high. As a result, not only the mechanical effectiveness of the bimetallic element 7 can be increased, but also the tripping accuracy can be improved by further reducing the influence of external physical influences on the heating of the bimetallic element 7. Particularly preferably, and as shown in FIGS. 1 to 4, it is provided that the heat insulator 9 comprises a plate 11, which is arranged between the first conductor 10 and the bimetal element 7. By such a plate 11 or such a sheet both high mechanical stability, as well as a high degree of thermal insulation can be achieved. It is preferably provided that the plate 11 has a thermal conductivity which is less than 350 W / (m * K), in particular less than 200 W / (m * K), preferably less than 85 W / (m * K). "W" denotes the power in watts, "m" the linear expansion in meters, "K" the absolute temperature in Kelvin, and "*" the operator for a multiplication. As a result, the heat dissipation through the plate is less than the heat dissipation in direct contact with the - usually formed of copper - first conductor 10. In this regard, it can be provided that the plate 11 may comprise any material having a lower thermal conductivity than copper, according to a further preferred embodiment already shown may be provided that the plate 11 is still a metallic electrical conductor in the technical sense, therefore, a specific electrical resistance of less than 0.5 Ω * mm 2 / m, preferably less than 0.2 Ω * mm 2 / m, but greater than the specific electrical resistance of copper (about 0.01724 Ω * mm 2 / m). In the preferred embodiments of a switching device 1 according to the invention can therefore be provided that the plate 11 comprising at least one material selected from the group: aluminum, brass, zinc, steel, preferably stainless Steel, nickel, iron, platinum, tin, tantalum, lead and / or titanium, is formed. Particularly preferred hiebei is the execution of the plate 11 comprising steel, preferably stainless steel, whereby a particularly advantageous balance of electrical conductivity, resistance and thermal insulation can be achieved. Furthermore, steel has good mechanical workability and low cost. As already stated, any type of attachment of the bimetallic element 7 may be provided with the first conductor 10. Particularly preferred, and as shown in FIGS. 1 to 4, it is provided that the bimetallic element 7 is connected to the first conductor 10 by means of at least one connecting rivet 12. In order to additionally increase the effect of the heat insulator 9, provision is preferably made for the heat insulator 9 to comprise the connection rivet 12. However, it can also be provided that the heat insulator 9 comprises only the at least one connecting rivet 12, and is free of plates 11 between the bimetallic element 7 and the first conductor 10.
Bei der Ausbildung der Verbindungsniete 12 ist bevorzugt vorgesehen, dass diese eine Wärmeleitfähigkeit aufweist, welche kleiner als 350 W/(m*K), insbesondere kleiner als 250 W/(m*K), vorzugsweise kleiner als 150 W/(m*K), ist. „W" bezeichnet dabei die Leistung in Watt, „m" die Längenausdehnung in Meter, „K" die absolute Temperatur in Kelvin, und „*" den Operator für eine Multiplikation. Dadurch ist die Wärmeabfuhr über eine derart ausgebildete Verbindungsniete 12 geringer als die Wärmeabfuhr bei einer Verbindungsniete 12 aus Kupfer. Diesbezüglich kann vorgesehen sein, dass die Verbindungsniete 12 jeden Werkstoff mit einem geringeren Wärmeleitwert als Kupfer umfassen kann, wobei gemäß einer bereits dargestellten weiteren bevorzugten Ausführungsform vorgesehen sein kann, dass die Verbindungsniete 12 weiterhin ein metallischer elektrischer Leiter im technischen Sinn ist, daher einen spezifischen Widerstand kleiner als 0,5 Ω*mm2/m aufweist. Neben den technischen Parametern die elektrische und thermische Leitfähigkeit betreffend, ist für die Verwendung eines Werkstoffes zur Anwendung bei einer Verbindungsniete 12 weiters die Möglichkeit einer duktilen mechanischen Verformbarkeit wesentlich. Bei den bevorzugten Ausführungsformen eines erfindungsgemäßen Schaltgeräts 1 kann daher vorgesehen, dass die Verbindungsniete 12 umfassend wenigstens einen Werkstoff ausgewählt aus der Gruppe: Aluminium, Messing, Zink, Stahl, vorzugsweise nicht rostender Stahl, Nickel, Eisen, Platin, Zinn, Tantal, Blei und/oder Titan, ausgebildet ist. Besonders bevorzugt ist vorgesehen, dass die Verbindungsniete 12 Messing umfasst, wobei hiebei jede Art einer Messinglegierung umfassend Kupfer und Zink vorgesehen sein kann. Weitere erfindungsgemäße Ausfuhrungsformen weisen lediglich einen Teil der beschriebenen Merkmale auf, wobei jede Merkmalskombination, insbesondere auch von verschiedenen beschriebenen Ausfuhrungsformen, vorgesehen sein kann. When forming the connecting rivet 12, it is preferably provided that it has a thermal conductivity which is less than 350 W / (m * K), in particular less than 250 W / (m * K), preferably less than 150 W / (m * K ) is. "W" denotes the power in watts, "m" the linear expansion in meters, "K" the absolute temperature in Kelvin, and "*" the operator for a multiplication. As a result, the heat dissipation via a connecting rivet 12 formed in this way is lower than the heat dissipation in the case of a connecting rivet 12 made of copper. In this regard, it can be provided that the connecting rivet 12 may comprise any material with a lower thermal conductivity than copper, wherein according to a further preferred embodiment already shown, it may be provided that the connecting rivet 12 is still a metallic electrical conductor in the technical sense, therefore a resistivity less than 0.5 Ω * mm 2 / m. In addition to the technical parameters concerning the electrical and thermal conductivity, the possibility of a ductile mechanical deformability is also essential for the use of a material for use in a connecting rivet 12. In the preferred embodiments of a switching device 1 according to the invention can therefore be provided that the connecting rivets 12 comprising at least one material selected from the group: aluminum, brass, zinc, steel, preferably stainless steel, nickel, iron, platinum, tin, tantalum, lead and or titanium, is formed. It is particularly preferred that the connecting rivet 12 comprises brass, wherein hiebei any type of brass alloy comprising copper and zinc may be provided. Further embodiments of the invention have only a part of the features described, wherein each feature combination, in particular of various described embodiments, may be provided.

Claims

P A T E N T A N S P R Ü C H E PATENT APPLICATIONS
1. Schaltgerät (1), vorzugsweise Leistungsschalter, mit wenigstens einer Eingangsklemme (2) und wenigstens einer Ausgangsklemme (3) zum Anschluss elektrischer Leiter, sowie mit einem ersten Schaltkontakt (4) und einem zweiten Schaltkontakt, wobei die Schaltkontakte (4) in einer geschlossenen Stellung einen Strompfad zwischen der Eingangsklemme (2) und der Ausgangklemme (3) schließen, wobei eine Überstromauslösevorrichtung (6) zum Trennen des ersten Schaltkontaktes (4) und des zweiten Schaltkontaktes vorgesehen ist, und wobei die Überstromauslösevorrichtung (6) wenigstens ein Bimetallelement (7) umfasst, welches durch den elektrischen Stromfluss beheizt ist, dadurch gekennzeichnet, dass im Bereich einer Befestigung (8) des Bimetallelements (7) wenigstens ein Wärmeisolator (9) zur Verminderung der Wärmeabfuhr von dem Bimetallelement (7) angeordnet ist.1. switching device (1), preferably power switch, with at least one input terminal (2) and at least one output terminal (3) for connecting electrical conductors, and with a first switching contact (4) and a second switching contact, wherein the switching contacts (4) in one closed position a current path between the input terminal (2) and the output terminal (3) close, wherein an overcurrent trip device (6) for separating the first switching contact (4) and the second switching contact is provided, and wherein the overcurrent tripping device (6) at least one bimetallic element ( 7), which is heated by the flow of electric current, characterized in that in the region of a fastening (8) of the bimetallic element (7) at least one heat insulator (9) for reducing the heat dissipation of the bimetallic element (7) is arranged.
2. Schaltgerät (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Bimetallelement2. Switching device (1) according to claim 1, characterized in that the bimetallic element
(7) an einem ersten Leiter (10) des Strompfades befestigt ist, welcher vorzugsweise der Eingangsklemme (2) und/oder der Ausgangsklemme (3) zugeordnet ist.(7) is attached to a first conductor (10) of the current path, which is preferably associated with the input terminal (2) and / or the output terminal (3).
3. Schaltgerät (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Wärmeisolator (9) als metallischer elektrischer Leiter ausgebildet ist.3. Switching device (1) according to claim 1 or 2, characterized in that the heat insulator (9) is designed as a metallic electrical conductor.
4. Schaltgerät (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Wärmeisolator (9) zur Erhöhung des elektrischen Widerstandes im Bereich der Befestigung4. Switching device (1) according to one of claims 1 to 3, characterized in that the heat insulator (9) for increasing the electrical resistance in the region of the attachment
(8) ausgebildet sind.(8) are formed.
5. Schaltgerät (1) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der Wärmeisolator (9) eine Platte (11) umfasst, welche zwischen dem ersten Leiter (10) und dem Bimetallelement (7) angeordnet ist. 5. Switching device (1) according to one of claims 2 to 4, characterized in that the heat insulator (9) comprises a plate (11) which is arranged between the first conductor (10) and the bimetallic element (7).
6. Schaltgerät (1) nach Anspruch 5, dadurch gekennzeichnet, dass die Platte (11) eine Wärmeleitfähigkeit aufweist, welche kleiner als 350 W/(m*K), insbesondere kleiner als 200 W/(m*K), vorzugsweise kleiner als 85 W/(m*K), ist.6. Switching device (1) according to claim 5, characterized in that the plate (11) has a thermal conductivity which is less than 350 W / (m * K), in particular less than 200 W / (m * K), preferably less than 85 W / (m * K).
7. Schaltgerät (1) nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Platte (11) umfassend wenigstens einen Werkstoff ausgewählt aus der Gruppe: Aluminium, Messing, Zink, Stahl, vorzugsweise nicht rostender Stahl, Nickel, Eisen, Platin, Zinn, Tantal, Blei und/oder Titan, ausgebildet ist.7. Switching device (1) according to claim 5 or 6, characterized in that the plate (11) comprising at least one material selected from the group: aluminum, brass, zinc, steel, preferably stainless steel, nickel, iron, platinum, tin , Tantalum, lead and / or titanium, is formed.
8. Schaltgerät (1) nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass das Bimetallelement (7) mittels wenigstens einer Verbindungsniete (12) mit dem ersten Leiter (10) verbunden ist.8. Switching device (1) according to one of claims 2 to 7, characterized in that the bimetallic element (7) by means of at least one connecting rivet (12) with the first conductor (10) is connected.
9. Schaltgerät (1) nach Anspruch 8, dadurch gekennzeichnet, dass der Wärmeisolator (9) die Verbindungsniete (12) umfasst.9. Switching device (1) according to claim 8, characterized in that the heat insulator (9) comprises the connecting rivet (12).
10. Schaltgerät (1) nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Verbindungsniete (12) eine Wärmeleitfähigkeit aufweist, welche kleiner als 350 W/(m*K), insbesondere kleiner als 250 W/(m*K), vorzugsweise kleiner als 150 W/(m*K), ist.10. Switching device (1) according to claim 8 or 9, characterized in that the connecting rivet (12) has a thermal conductivity which is less than 350 W / (m * K), in particular less than 250 W / (m * K), preferably less than 150 W / (m * K), is.
11. Schaltgerät (1) nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass die Verbindungsniete (12) umfassend wenigstens einen Werkstoff ausgewählt aus der Gruppe: Aluminium, Messing, Zink, Stahl, vorzugsweise nicht rostender Stahl, Nickel, Eisen, Platin, Zinn, Tantal, Blei und/oder Titan, ausgebildet ist. 11. Switching device (1) according to one of claims 8 to 10, characterized in that the connecting rivet (12) comprising at least one material selected from the group: aluminum, brass, zinc, steel, preferably stainless steel, nickel, iron, platinum Tin, tantalum, lead and / or titanium.
EP09717343A 2008-03-05 2009-02-17 Switching device Active EP2263246B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL09717343T PL2263246T3 (en) 2008-03-05 2009-02-17 Switching device
SI200930096T SI2263246T1 (en) 2008-03-05 2009-02-17 Switching device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0035708A AT509407A1 (en) 2008-03-05 2008-03-05 SWITCHGEAR
PCT/AT2009/000057 WO2009108968A1 (en) 2008-03-05 2009-02-17 Switching device

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EP2263246A1 true EP2263246A1 (en) 2010-12-22
EP2263246B1 EP2263246B1 (en) 2011-08-03

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Application Number Title Priority Date Filing Date
EP09717343A Active EP2263246B1 (en) 2008-03-05 2009-02-17 Switching device

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US (1) US8026785B2 (en)
EP (1) EP2263246B1 (en)
CN (1) CN101527227B (en)
AR (1) AR070778A1 (en)
AT (2) AT509407A1 (en)
AU (1) AU2009221606A1 (en)
BR (1) BRPI0910247A2 (en)
CA (1) CA2715429A1 (en)
ES (1) ES2372093T3 (en)
IL (1) IL207502A (en)
PL (1) PL2263246T3 (en)
RS (1) RS51991B (en)
RU (1) RU2483385C2 (en)
SI (1) SI2263246T1 (en)
WO (1) WO2009108968A1 (en)

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CN103903921B (en) * 2012-12-28 2016-08-17 施耐德电器工业公司 Overload protection arrangement and include the thermomagnetic adjustable release device of breaker of this device
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Also Published As

Publication number Publication date
AR070778A1 (en) 2010-05-05
SI2263246T1 (en) 2012-04-30
ES2372093T3 (en) 2012-01-13
IL207502A0 (en) 2010-12-30
BRPI0910247A2 (en) 2015-09-29
ATE519215T1 (en) 2011-08-15
CN101527227B (en) 2013-09-18
CA2715429A1 (en) 2009-09-11
AT509407A1 (en) 2011-08-15
WO2009108968A1 (en) 2009-09-11
US8026785B2 (en) 2011-09-27
EP2263246B1 (en) 2011-08-03
RS51991B (en) 2012-04-30
RU2010140615A (en) 2012-04-10
AU2009221606A1 (en) 2009-09-11
US20090224864A1 (en) 2009-09-10
PL2263246T3 (en) 2012-05-31
IL207502A (en) 2013-10-31
CN101527227A (en) 2009-09-09
RU2483385C2 (en) 2013-05-27

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