EP0360367A2 - Low-voltage power circuit breaker with a wall portion for diverting the arc gases - Google Patents

Low-voltage power circuit breaker with a wall portion for diverting the arc gases Download PDF

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Publication number
EP0360367A2
EP0360367A2 EP89250036A EP89250036A EP0360367A2 EP 0360367 A2 EP0360367 A2 EP 0360367A2 EP 89250036 A EP89250036 A EP 89250036A EP 89250036 A EP89250036 A EP 89250036A EP 0360367 A2 EP0360367 A2 EP 0360367A2
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EP
European Patent Office
Prior art keywords
circuit breaker
partition
switching
housing
low
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
EP89250036A
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German (de)
French (fr)
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EP0360367B1 (en
EP0360367A3 (en
Inventor
Clifford A. Buxton
David A. Leone
W. Dale Robbins
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Siemens AG
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Siemens AG
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Publication of EP0360367A2 publication Critical patent/EP0360367A2/en
Publication of EP0360367A3 publication Critical patent/EP0360367A3/en
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Publication of EP0360367B1 publication Critical patent/EP0360367B1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342Venting arrangements for arc chutes

Definitions

  • the invention relates to a low-voltage circuit breaker with a molded housing which has two housing parts butt-jointed to one another, with fixed and movable switching contacts and with a drive device for opening and closing the switching contacts and with a wall part inserted between the housing parts for discharging switching gases.
  • a circuit breaker of this type has become known, for example, from US-A-4,598,186.
  • the wall part is provided with a number of passage openings, the size and spacing of which is adapted to a desired course of the extinguishing process of the switching arcs.
  • the removal of the hot ionized gases formed in particular in the interruption of high fault currents in a circuit breaker is essential for the reliable functioning of the circuit breaker.
  • the ionized gas in multipole circuit breakers can increase the likelihood of a flashover between the adjacent poles of the circuit breaker due to its low dielectric strength.
  • the switching gases can give rise to a flashover between the switching contacts of the circuit breaker and the associated drive device.
  • the invention is based on the object of limiting the spread of switching gases inside the circuit breaker in the direction of the drive device and adjacent poles. Furthermore, the removal of the switching gases from the housing of the circuit breaker to the outside is to be simplified.
  • the wall part is inserted at the joint between the housing parts and is designed as a partition for separating the drive device from the switching contacts.
  • the partition extends over all poles of the circuit breaker, is easy to insert when mounting the housing parts and improves the strength of the entire housing due to this arrangement.
  • the partition creates two separate spaces in the housing, which are intended to accommodate a drive device and the switch contact arrangements. At least one passage opening for a coupling member for connecting the movable switching contacts to the drive device can be provided in the partition.
  • the partition can have an essential additional function in that channels for guiding the switching gases are attached to the partition. Means for cooling the switching gases can also be arranged in these channels.
  • FIG. 1 shows an insulating molded-plastic housing 10 which has two housing parts 12 and 14.
  • the housing parts 12 and 14 abut along a parting line 16 and are in this position by suitable fasteners, for. B. bolts, which are inserted into openings 18 of the housing part 12.
  • the threaded parts of the bolts extend into corresponding threaded openings in the housing part 14.
  • the same arrangement as that shown on the side of the housing parts 12 and 14 shown in FIG. 1 is present the opposite, hidden side of the molding material housing 10.
  • a partition 20 is inserted between the housing parts 12 and 14, which is shown in two views in FIGS. 2 and 3.
  • the partition 20 has undercut end webs 22 which are received in correspondingly shaped recesses in the contact surfaces of the housing parts 12 and 14 as shown in FIG. 4.
  • the recesses are set back with respect to the outer surfaces of the molded-material housing 10, so that when the housing according to FIG. 1 is viewed, the end webs 22 are covered. Due to the undercut shape of the end webs 22, the partition wall 20 contributes to the mutual alignment of the side walls of the housing parts 12 and 14 and to their stiffening with respect to the internal excess pressure which arises during switching.
  • the partition 20 has a wall region 24 to which holes 26 are provided for receiving fastening parts which serve to align and fasten the partition 20 to the housing part 14.
  • the wall region 24 also contains a recess 28 in the region of the end webs 22, which contribute to the alignment of the partition 20 between the housing parts 12 and 14.
  • further holes 26 are provided in the wall area 24, which are located between two parallel webs 30 in each case.
  • the webs interact with phase partitions of the housing part 14, not shown. The steps between the webs 30 and the phase partitions interacting with them also improve the insulation between the adjacent poles of the circuit breaker.
  • inclined wall areas 36 and laterally delimiting wall areas 34 which terminate with the webs 30, are provided to form extraction channels 32.
  • the discharge channels 32 along a path designated by C the outflow of Enable switching gases that are formed in the space A provided for the switching contacts in the molded plastic housing 10.
  • the adjoining space B which is separated from the housing space A by the partition 20, is provided for the drive device for the switching contacts in the housing space A.
  • two openings 40 are provided in the partition 20 according to FIG. 3, which are flanked by projections 44 on the opposite side of the partition 20 shown in FIG are arranged approximately at right angles to the wall region 24 and have the task of shielding the coupling members extending through the openings 40.
  • the exhaust ducts 32 are provided with metal grids 42.
  • the grids 42 contribute to further cooling and ionization and thus to a reduction in the energy contained in the switching gases.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Casings For Electric Apparatus (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

Ein Niederspannungs-Leistungsschalter weist ein Formstoffgehäuse (10) auf, das aus zwei entlang einer Teilfuge (16) aneinanderstoßenden Gehäuseteilen (12 und 14) besteht. Zwischen diese Gehäuseteile ist eine Trennwand (20) eingesetzt, die einen zur Aufnahme einer Antriebsvorrichtung dienenden Gehäuseraum (B) von einem die Schaltkontakte enthaltenden Raum (A) abtrennt. Die Trennwand (20) ist zugleich als Führungsorgan für Schaltgase ausgebildet und weist hierzu Abzugskanäle (32) auf. Zum Durchtritt von Kupplungsorganen zwischen den Schaltkontakten und der Antriebsvorrichtung sind von Vorsprüngen (44) flankierte Durchtrittsöffnungen (40) vorgesehen.A low-voltage circuit breaker has a molded-plastic housing (10) which consists of two housing parts (12 and 14) abutting along a joint (16). Between these housing parts, a partition (20) is inserted, which separates a housing space (B) serving to receive a drive device from a space (A) containing the switching contacts. The partition (20) is at the same time designed as a guide element for switching gases and for this purpose has extraction channels (32). Passage openings (40) flanked by projections (44) are provided for the passage of coupling members between the switching contacts and the drive device.

Description

Die Erfindung betrifft einen Niederspannungs-Leistungsschalter mit einem zwei entlang einer Teilfuge aneinanderstoßend verbun­dene Gehäuseteile aufweisenden Formstoffgehäuse, mit fest­stehenden und bewegbaren Schaltkontakten und mit einer An­triebsvorrichtung zum Öffnen und Schließen der Schaltkontakte sowie mit einem zwischen die Gehäuseteile eingefügten Wandteil zur Ableitung von Schaltgasen.The invention relates to a low-voltage circuit breaker with a molded housing which has two housing parts butt-jointed to one another, with fixed and movable switching contacts and with a drive device for opening and closing the switching contacts and with a wall part inserted between the housing parts for discharging switching gases.

Ein Leistungsschalter dieser Art ist beispielsweise durch die US-A- 4 598 186 bekanntgeworden. Der Wandteil ist mit einer An­zahl von Durchtrittsöffnungen versehen, deren Größe und Abstand einem gewünschten Verlauf des Löschvorganges der Schaltlicht­bögen angepaßt ist.A circuit breaker of this type has become known, for example, from US-A-4,598,186. The wall part is provided with a number of passage openings, the size and spacing of which is adapted to a desired course of the extinguishing process of the switching arcs.

Die Abführung der insbesondere bei der Unterbrechung von hohen Fehlerströmen in einem Leistungsschalter gebildeten heißen ionisierten Gase ist für die zuverlässige Funktion des Leistungs­schalters wesentlich. Insbesondere kann das ionisierte Gas bei mehrpoligen Leistungsschaltern aufgrund seiner geringen dielektrischen Festigkeit die Wahrscheinlichkeit eines Überschlages zwischen den benachbarten Polen des Leistungsschalters vergrößern. Ebenso können die Schaltgase Anlaß eines Überschlages zwischen den Schaltkontakten des Leistungsschalters und der zugehörigen Antriebsvorrichtung Anlaß geben. Für den sicheren Betrieb eines Leistungsschalters ist es daher wichtig, daß eine Ausbreitung der Schaltgase aus dem die Schaltkontakte enthaltenden Raum sowohl in Richtung der Antriebsvorrichtung als auch in Richtung benachbarter Pole des Leistungsschalters möglichst eingeschränkt wird.The removal of the hot ionized gases formed in particular in the interruption of high fault currents in a circuit breaker is essential for the reliable functioning of the circuit breaker. In particular, the ionized gas in multipole circuit breakers can increase the likelihood of a flashover between the adjacent poles of the circuit breaker due to its low dielectric strength. Likewise, the switching gases can give rise to a flashover between the switching contacts of the circuit breaker and the associated drive device. For the safe operation of a circuit breaker, it is therefore important that the expansion of the switching gases from the space containing the switching contacts is restricted as much as possible both in the direction of the drive device and in the direction of adjacent poles of the circuit breaker.

Eine Möglichkeit zur Isolierung stromführender Teile eines Leistungsschalters ist in der US-A- 4 242 577 veranschaulicht. Hierin ist eine isolierende Trennwand zur elektrischen Isolierung der Schaltkontakte gegenüber der zugehörigen Antriebsvorrichtung veranschaulicht. Ebenso wichtig wie eine Begrenzung der Aus­breitung der Schaltgase in den erwähnten unerwünschten Richtungen ist es, einen Weg zur Abführung der Schaltgase aus dem Leistungsschalter bereitzustellen. Gewöhnlich geschieht dies durch einen gesonderten Abzugskanal, der jedoch die weitere Schwierigkeit aufweist, daß eine Beaufschlagung der äußeren spannungführenden Anschlußvorrichtungen des Leistungsschalters mit den Schaltgasen vermieden werden muß. Geschieht dies nicht, so entsteht die Gefahr eines Überschlages zwischen den äußeren Anschlußvorrichtungen der benachbarten Pole. Diese Gefahr be­steht, obwohl in Gestalt der bekannten, mit Löschblechen ver­sehenen Lichtbogenlöschkammern stets Mittel zur Kühlung und Entionisierung der Schaltlichtbögen vorgesehen werden. Ein Beispiel einer Lichtbogenlöschkammer ist der US-A- 4 672 157 zu entnehmen.One way of isolating live parts of a circuit breaker is illustrated in US-A-4,242,577. This illustrates an insulating partition for electrically isolating the switch contacts from the associated drive device. Just as important as limiting the spread of the switching gases in the undesirable directions mentioned is to provide a way to remove the switching gases from the circuit breaker. This is usually done through a separate exhaust duct, which, however, has the further difficulty that exposure to the external live connection devices of the circuit breaker with the switching gases must be avoided. If this is not done, there is a risk of a flashover between the outer connection devices of the adjacent poles. This danger exists, although means for cooling and deionizing the switching arcs are always provided in the form of the known arc quenching chambers provided with quenching plates. An example of an arc quenching chamber can be found in US-A-4,672,157.

Der Erfindung liegt ausgehend von den vorstehend beschriebenen Problemen die Aufgabe zugrunde, die Ausbreitung von Schaltgasen im Inneren des Leistungsschalters in Richtung der Antriebsvor­richtung und benachbarter Pole zu begrenzen. Ferner soll die Abführung der Schaltgase aus dem Gehäuse des Leistungsschalters nach außen vereinfacht werden.Based on the problems described above, the invention is based on the object of limiting the spread of switching gases inside the circuit breaker in the direction of the drive device and adjacent poles. Furthermore, the removal of the switching gases from the housing of the circuit breaker to the outside is to be simplified.

Diese Aufgabe wird ausgehend von einem Leistungsschalter der eingangs genannten Art dadurch gelöst, daß der Wandteil an der Teilfuge zwischen die Gehäuseteile eingefügt und zur Abtrennung der Antriebsvorrichtung von den Schaltkontakten als Trennwand ausgebildet ist. In dieser Ausgestaltung erstreckt sich die Trennwand über alle Pole des Leistungsschalters, ist bei der Montage der Gehäuseteile auf einfache Weise einzufügen und ver­bessert aufgrund dieser Anordnung die Festigkeit des gesamten Gehäuses.This object is achieved on the basis of a circuit breaker of the type mentioned at the outset in that the wall part is inserted at the joint between the housing parts and is designed as a partition for separating the drive device from the switching contacts. In this embodiment, the partition extends over all poles of the circuit breaker, is easy to insert when mounting the housing parts and improves the strength of the entire housing due to this arrangement.

Durch die Trennwand entstehen in dem Gehäuse zwei abgetrennte Räume, die zur Unterbringung einer Antriebsvorrichtung und der Schaltkontaktanordnungen vorgesehen sind. Dabei kann in der Trennwand wenigstens eine Durchtrittsöffnung für ein Kupplungs­organ zur Verbindung der bewegbaren Schaltkontakte mit der Antriebsvorrichtung vorgesehen sein.The partition creates two separate spaces in the housing, which are intended to accommodate a drive device and the switch contact arrangements. At least one passage opening for a coupling member for connecting the movable switching contacts to the drive device can be provided in the partition.

Eine wesentliche zusätzliche Funktion kann die Trennwand dadurch erhalten, daß Kanäle zur Führung der Schaltgase an der Trennwand angebracht sind. In diesen Kanälen können auch Mittel zur Kühlung der Schaltgase angeordnet sein.The partition can have an essential additional function in that channels for guiding the switching gases are attached to the partition. Means for cooling the switching gases can also be arranged in these channels.

Die Erfindung wird im folgenden anhand des in den Figuren dar­gestellten Ausführungsbeispieles näher erläutert.

  • Die Figur 1 ist eine perspektivische Ansicht des Gehäuses eines Niederspannungs-Leistungsschalters.
  • Die Figur 2 ist eine perspektivische Vorderansicht einer mit Kanälen versehenen Trennwand.
  • In der Figur 3 ist die Trennwand gemäß der Figur 2 mit entgegengesetzter Blickrichtung gezeigt.
  • In der Figur 4 ist ein Schnitt durch das Gehäuse gemäß der Figur 1 mit eingesetzter Trennwand gezeigt
The invention is explained below with reference to the embodiment shown in the figures.
  • Figure 1 is a perspective view of the housing of a low voltage circuit breaker.
  • Figure 2 is a front perspective view of a channeled partition.
  • FIG. 3 shows the partition wall according to FIG. 2 with the opposite viewing direction.
  • FIG. 4 shows a section through the housing according to FIG. 1 with the partition wall inserted

In der Figur 1 ist ein isolierendes Formstoffgehäuse 10 gezeigt, das zwei Gehäuseteile 12 und 14 aufweist. Die Gehäuseteile 12 und 14 stoßen entlang einer Teilfuge 16 aneinander und sind in dieser Stellung durch geeignete Befestigungsmittel, z. B. Schrauben­bolzen, verbunden, die in Öffnungen 18 des Gehäuseteiles 12 ein­gesetzt sind. Dabei erstrecken sich die Gewindeteile der Schrauben­bolzen in entsprechende Gewindeöffnungen in dem Gehäuseteil 14. Eine gleiche Anordnung, wie sie an der in der Figur 1 sichtbaren Seite der Gehäuseteile 12 und 14 gezeigt ist, befindet sich an der gegenüberliegenden, verdeckten Seite des Formstoffgehäuses 10.FIG. 1 shows an insulating molded-plastic housing 10 which has two housing parts 12 and 14. The housing parts 12 and 14 abut along a parting line 16 and are in this position by suitable fasteners, for. B. bolts, which are inserted into openings 18 of the housing part 12. The threaded parts of the bolts extend into corresponding threaded openings in the housing part 14. The same arrangement as that shown on the side of the housing parts 12 and 14 shown in FIG. 1 is present the opposite, hidden side of the molding material housing 10.

Zwischen die Gehäuseteile 12 und 14 ist eine Trennwand 20 ein­gefügt, die in zwei Ansichten in den Figuren 2 und 3 gezeigt ist. An ihren gegenüberliegenden Schmalseiten weist die Trennwand 20 hinterschnittene Endstege 22 auf, die in entsprechend geformten Ausnehmungen der Berührungsflächen der Gehäuseteile 12 und 14 entsprechend der Darstellung in der Figur 4 aufgenommen sind. Die Ausnehmungen sind gegenüber den Außenflächen des Formstoff­gehäuses 10 zurückgesetzt, so daß bei der Betrachtung des Ge­häuses gemäß der Figur 1 die Endstege 22 verdeckt sind. Durch die hinterschnittene Form der Endstege 22 trägt die Trennwand 20 zur gegenseitigen Ausrichtung der Seitenwände der Gehäuseteile 12 und 14 und zu deren Versteifung gegenüber dem beim Schalten entstehenden inneren Überdruck bei.A partition 20 is inserted between the housing parts 12 and 14, which is shown in two views in FIGS. 2 and 3. On its opposite narrow sides, the partition 20 has undercut end webs 22 which are received in correspondingly shaped recesses in the contact surfaces of the housing parts 12 and 14 as shown in FIG. 4. The recesses are set back with respect to the outer surfaces of the molded-material housing 10, so that when the housing according to FIG. 1 is viewed, the end webs 22 are covered. Due to the undercut shape of the end webs 22, the partition wall 20 contributes to the mutual alignment of the side walls of the housing parts 12 and 14 and to their stiffening with respect to the internal excess pressure which arises during switching.

Wie insbesondere den Figuren 2 und 3 zu entnehmen ist, weist die Trennwand 20 einen Wandbereich 24 auf, an der Löcher 26 zur Aufnahme von Befestigungsteilen angebracht sind, die zur Aus­richtung und Befestigung der Trennwand 20 an dem Gehäuseteil 14 dienen. Der Wandbereich 24 enthält ferner je eine Ausnehmung 28 im Bereich der Endstege 22, die zur Ausrichtung der Trenn­wand 20 zwischen den Gehäuseteilen 12 und 14 beitragen. Ferner sind in dem Wandbereich 24 weitere Löcher 26 vorgesehen, die sich zwischen jeweils zwei parallelen Stegen 30 befinden. Die Stege wirken mit nicht gezeigten Phasentrennwänden des Gehäuse­teiles 14 zusammen. Durch Abstufungen der Stege 30 und der mit ihnen zusammenwirkenden Phasentrennwände wird zusätzlich die Isolation zwischen den benachbarten Polen des Leistungsschalters verbessert.As can be seen in particular from FIGS. 2 and 3, the partition 20 has a wall region 24 to which holes 26 are provided for receiving fastening parts which serve to align and fasten the partition 20 to the housing part 14. The wall region 24 also contains a recess 28 in the region of the end webs 22, which contribute to the alignment of the partition 20 between the housing parts 12 and 14. Furthermore, further holes 26 are provided in the wall area 24, which are located between two parallel webs 30 in each case. The webs interact with phase partitions of the housing part 14, not shown. The steps between the webs 30 and the phase partitions interacting with them also improve the insulation between the adjacent poles of the circuit breaker.

Wie insbesondere der Figur 2 zu entnehmen ist, sind zur Bildung von Abzugskanälen 32 schräge Wandbereiche 36 und diese seitlich begrenzende Wandbereiche 34 vorgesehen, die mit den Stegen 30 abschließen. Der Figur 4 ist zu entnehmen, daß die Abzugskanäle 32 entlang einem mit C bezeichneten Weg das Abströmen von Schaltgasen ermöglichen, die in dem für die Schaltkontakte vorgesehenen Raum A in dem Formstoffgehäuse 10 gebildet werden. Der anschließende, von dem Gehäuseraum A durch die Trennwand 20 abgetrennte Raum B ist für die Antriebsvorrichtung der Schalt­kontakte in dem Gehäuseraum A vorgesehen. Für das Zusammen­wirken der Antriebsvorrichtung in dem Gehäuseraum B mit den Schaltkontakten im Gehäuseraum A sind in der Trennwand 20 entsprechend der Figur 3 zwei Öffnungen 40 vorgesehen, die auf der gegenüberliegenden, in der Figur 2 gezeigten Seite der Trennwand 20 von Vorsprüngen 44 flankiert sind, die etwa rechtwinklig zu dem Wandbereich 24 angeordnet sind und die Aufgabe haben, die sich durch die Öffnungen 40 erstreckenden Kupplungsorgane abzuschirmen.As can be seen in particular from FIG. 2, inclined wall areas 36 and laterally delimiting wall areas 34, which terminate with the webs 30, are provided to form extraction channels 32. It can be seen from FIG. 4 that the discharge channels 32 along a path designated by C the outflow of Enable switching gases that are formed in the space A provided for the switching contacts in the molded plastic housing 10. The adjoining space B, which is separated from the housing space A by the partition 20, is provided for the drive device for the switching contacts in the housing space A. For the interaction of the drive device in the housing space B with the switching contacts in the housing space A, two openings 40 are provided in the partition 20 according to FIG. 3, which are flanked by projections 44 on the opposite side of the partition 20 shown in FIG are arranged approximately at right angles to the wall region 24 and have the task of shielding the coupling members extending through the openings 40.

Um die Schaltgase nach dem Verlassen der nicht gezeigten Licht­bogenlöschkammer weiter abzukühlen, sind die Abzugskanäle 32 mit Metallgittern 42 versehen. In bekannter Weise tragen die Gitter 42 zur weiteren Abkühlung und Ionisierung und somit zur Verringerung der in den Schaltgasen enthaltenen Energie bei.In order to further cool the switching gases after leaving the arc quenching chamber (not shown), the exhaust ducts 32 are provided with metal grids 42. In a known manner, the grids 42 contribute to further cooling and ionization and thus to a reduction in the energy contained in the switching gases.

Claims (4)

1. Niederspannungs-Leistungsschalter mit einem zwei entlang einer Teilfuge (16) aneinanderstoßend verbundene Gehäuse­teile (12,14) aufweisenden Formstoffgehäuse (10), mit fest­stehenden und bewegbaren Schaltkontakten und einer Antriebs­vorrichtung zum Öffnen und Schließen der Schaltkontakte sowie mit einem zwischen die Gehäuseteile (12,14) eingefügten Wand­teil (20) zur Ableitung von Schaltgasen,
dadurch gekennzeichnet, daß daß der Wandteil (20) an der Teilfuge (16) zwischen die Gehäuseteile (12,14) eingefügt ist und zur Abtrennung der An­triebsvorrichtung (B) von den Schaltkontakten (A) als Trennwand ausgebildet ist.
1.Low-voltage circuit breaker with a molded plastic housing (10) which has two housing parts (12, 14) connected to one another along a joint (16), with fixed and movable switching contacts and a drive device for opening and closing the switching contacts, and with one between the housing parts (12 , 14) inserted wall part (20) for discharging switching gases,
characterized in that the wall part (20) is inserted at the parting line (16) between the housing parts (12, 14) and is designed as a partition for separating the drive device (B) from the switching contacts (A).
2. Niederspannungs-Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, daß die Trennwand (20) wenigstens eine Durchtrittsöffnung (40) für ein Kupplungsorgan zur Verbindung der Schaltkontakte (A) mit der Antriebsvorrichtung (B) aufweist.2. Low-voltage circuit breaker according to claim 1, characterized in that the partition (20) has at least one passage opening (40) for a coupling member for connecting the switching contacts (A) to the drive device (B). 3. Niederspannungs-Leistungsschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Trennwand (20) Abzugskanäle (32) zur Führung der Schaltgase aufweist.3. Low-voltage circuit breaker according to claim 1 or 2, characterized in that the partition (20) has extraction channels (32) for guiding the switching gases. 4. Niederspannungs-Leistungsschalter nach Anspruch 3, dadurch gekennzeichnet, daß in den Kanälen (32) Mittel (42) zur Kühlung der Schaltgase an­geordnet sind.4. Low-voltage circuit breaker according to claim 3, characterized in that means (42) for cooling the switching gases are arranged in the channels (32).
EP89250036A 1988-09-19 1989-09-13 Low-voltage power circuit breaker with a wall portion for diverting the arc gases Expired - Lifetime EP0360367B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US246484 1988-09-19
US07/246,484 US4876424A (en) 1988-09-19 1988-09-19 Barrier with a venting scheme for a circuit breaker

Publications (3)

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EP0360367A2 true EP0360367A2 (en) 1990-03-28
EP0360367A3 EP0360367A3 (en) 1991-11-06
EP0360367B1 EP0360367B1 (en) 1995-04-19

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EP89250036A Expired - Lifetime EP0360367B1 (en) 1988-09-19 1989-09-13 Low-voltage power circuit breaker with a wall portion for diverting the arc gases

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US (1) US4876424A (en)
EP (1) EP0360367B1 (en)
JP (1) JP2782462B2 (en)
CA (1) CA1331776C (en)
DE (1) DE58909184D1 (en)
ES (1) ES2070899T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410108A1 (en) * 1994-03-21 1995-09-28 Siemens Ag Arc quenching chamber with three barriers for the passage of arc gases

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268831B (en) * 1992-07-17 1996-04-24 Square D Co Improvements relating to circuit breakers
US5457296A (en) * 1992-07-17 1995-10-10 Square D Company Circuit breaker enclosure
JP3166890B2 (en) * 1994-05-24 2001-05-14 富士電機株式会社 Circuit breaker arc extinguishing device
DE29612636U1 (en) * 1996-07-15 1997-08-14 Siemens AG, 80333 München Arc quenching chamber for low voltage circuit breakers
DE19638948A1 (en) * 1996-09-16 1998-03-19 Siemens Ag Mobile circuit breaker with a blowout damper
DE29617358U1 (en) * 1996-09-24 1998-01-29 Siemens AG, 80333 München Arc quenching chamber for low voltage circuit breakers
US6005207A (en) * 1997-09-23 1999-12-21 Siemens Energy & Automation, Inc. Multi-part circuit breaker housing
US5910757A (en) * 1998-03-25 1999-06-08 Square D Company Phase barrier for use in a multiphase circuit breaker
DE10036370B4 (en) * 2000-07-18 2009-07-09 Siemens Ag Arc quenching device with an attachment for low-voltage switchgear
DE10049726A1 (en) * 2000-09-29 2002-04-11 Siemens Ag Chamber cover attachment for arc quenching chambers for low-voltage switchgear
NL1020581C2 (en) * 2002-05-13 2003-11-14 Holec Holland Nv Switching installation with an electrically insulating barrier.
DE20215343U1 (en) * 2002-09-30 2003-01-30 Siemens AG, 80333 München Arrangement with a low-voltage circuit breaker and a switching gas damper provided with a support element for the low-voltage circuit breaker
US6762389B1 (en) 2003-04-17 2004-07-13 Eaton Corporation Gas discharge filter for electrical switching apparatus
DE102005043396A1 (en) * 2005-09-08 2007-03-15 Siemens Ag Replaceable blanks for a circuit breaker and circuit breaker with replaceable blanks
US7586058B2 (en) * 2007-04-27 2009-09-08 Eaton Corporation Electrical switching apparatus, and ARC hood assembly and chimney therefor
US7974078B2 (en) * 2008-01-23 2011-07-05 Eaton Corporation Electrical enclosure assembly having venting system
US20090185332A1 (en) * 2008-01-23 2009-07-23 Coomer Jarrod L Cassette assembly and panel assembly therefor
US8922977B2 (en) * 2012-04-20 2014-12-30 Schneider Electric USA, Inc. Passive arc management system with a flue chamber
US9805898B2 (en) * 2015-07-31 2017-10-31 Eaton Corporation Fuse arc gas baffle with arc resistant fuse assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH278119A (en) * 1949-12-30 1951-09-30 Ag Weber Auto switch.
US2989604A (en) * 1957-04-04 1961-06-20 Gen Electric Circuit breaker
FR1485356A (en) * 1965-07-03 1967-06-16 Busch Jaeger Duerener Metall Installation circuit breaker with magnetic and thermal tripping
DE2719053A1 (en) * 1976-04-28 1977-11-10 Gould Inc ENGINE STARTER
US4598186A (en) * 1983-05-09 1986-07-01 Square D Company Vent arrangement for high amperage molded case circuit breaker

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA537190A (en) * 1957-02-12 Toth Julius Circuit breaker
US2408352A (en) * 1944-03-24 1946-09-24 Gen Electric Gas cooling arrangement for circuit interrupters
NL136065C (en) * 1960-12-07
US3553613A (en) * 1969-07-23 1971-01-05 Square D Co Magnet and movable contact support structure for a multiple contact electromagnetically actuated switch
US4075446A (en) * 1976-07-15 1978-02-21 Heinemann Electric Company Circuit breaker arc venting screen
US4242577A (en) * 1976-12-30 1980-12-30 Westinghouse Electric Corp. Circuit breaker having insulation barrier
FR2451097A1 (en) * 1979-02-07 1980-10-03 Terasaki Denki Sangyo Kk ELECTRIC AIR CIRCUIT SWITCH, MECHANISM AND HOUSING
US4229630A (en) * 1980-03-17 1980-10-21 Westinghouse Electric Corp. Circuit breaker utilizing improved arc chambers
US4484045A (en) * 1982-08-16 1984-11-20 General Electric Company Molded case circuit breaker having improved arc resistant properties
JPS60175335A (en) * 1984-02-20 1985-09-09 富士電機株式会社 Circuit breaker
US4581511A (en) * 1984-09-28 1986-04-08 Westinghouse Electric Corp. Molded case circuit breaker with an improved internal venting system
FR2583571B1 (en) * 1985-06-12 1994-02-18 Merlin Et Gerin LOW VOLTAGE CIRCUIT BREAKER WITH IMPROVED CUT.
DE3679291D1 (en) * 1985-10-31 1991-06-20 Merlin Gerin KINEMATIC TRANSMISSION CHAIN BETWEEN THE CONTROL MECHANISM AND THE POLES OF AN ELECTRIC LOAD SWITCH WITH A SPRAYED INSULATION HOUSING.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH278119A (en) * 1949-12-30 1951-09-30 Ag Weber Auto switch.
US2989604A (en) * 1957-04-04 1961-06-20 Gen Electric Circuit breaker
FR1485356A (en) * 1965-07-03 1967-06-16 Busch Jaeger Duerener Metall Installation circuit breaker with magnetic and thermal tripping
DE2719053A1 (en) * 1976-04-28 1977-11-10 Gould Inc ENGINE STARTER
US4598186A (en) * 1983-05-09 1986-07-01 Square D Company Vent arrangement for high amperage molded case circuit breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410108A1 (en) * 1994-03-21 1995-09-28 Siemens Ag Arc quenching chamber with three barriers for the passage of arc gases
US5756951A (en) * 1994-03-21 1998-05-26 Siemens Aktiengesellschaft Arc chute having three barriers for the passage of arc gasses

Also Published As

Publication number Publication date
EP0360367B1 (en) 1995-04-19
EP0360367A3 (en) 1991-11-06
JP2782462B2 (en) 1998-07-30
DE58909184D1 (en) 1995-05-24
JPH02197023A (en) 1990-08-03
ES2070899T3 (en) 1995-06-16
US4876424A (en) 1989-10-24
CA1331776C (en) 1994-08-30

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