EP1722384B1 - Electrical installation device with an arc chute assembly and a current limiting arc extinguishing device - Google Patents

Electrical installation device with an arc chute assembly and a current limiting arc extinguishing device Download PDF

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Publication number
EP1722384B1
EP1722384B1 EP06008056A EP06008056A EP1722384B1 EP 1722384 B1 EP1722384 B1 EP 1722384B1 EP 06008056 A EP06008056 A EP 06008056A EP 06008056 A EP06008056 A EP 06008056A EP 1722384 B1 EP1722384 B1 EP 1722384B1
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EP
European Patent Office
Prior art keywords
arc
electrical installation
installation device
slot
area
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Not-in-force
Application number
EP06008056A
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German (de)
French (fr)
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EP1722384A2 (en
EP1722384A3 (en
Inventor
Alexander Rab
Rainer Dipl.-Ing. Ludovici
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ABB AG Germany
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ABB AG Germany
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Publication of EP1722384A2 publication Critical patent/EP1722384A2/en
Publication of EP1722384A3 publication Critical patent/EP1722384A3/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/346—Details concerning the arc formation chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber

Definitions

  • the invention relates to an electrical installation device with arc Vorschraum, Vorschplatten and current-limiting arc quenching device according to the preamble of claim 1.
  • the invention can be used for example in circuit breakers and motor protection switches.
  • Miniature circuit breakers and motor protection switches are used in the event of a fault to disconnect electrical lines that are loaded with high current overcurrents from the supply network.
  • a fixed and a movable contact piece are provided in an arc Vorschraum, which are connected to the respective terminals.
  • a switching arc which is deleted in a designated extinguishing device.
  • the drawn arc commutes from the opened contact pieces on arc guide rails, and then subdivided into an arc splitter stack (Deion quenching chamber). There, a high arc voltage is generated to limit the current, so that the arc goes out.
  • an arc extinguishing arrangement for an electrical switching device which comprises a quenching chamber (in which a switching action between a fixed and a movable contact piece is generated an arc) and a plurality of arc quenching arc splitter stack in which the arc is guided over guide rails.
  • the invention has for its object to provide an electrical installation device with arc Vorschraum, Vorhuntplatten and current-limiting arc quenching, the high dielectric strength is maintained even after repeated triggering with the emergence of an arc.
  • the achievable with the present invention consist in particular in that the proposed measures are simple and inexpensive to implement and ensure a higher dielectric strength with unchanged compact design of the switching device.
  • the two prechamber plates 8 mentioned above are formed from an insulating material (such as ceramic or plastic) and arranged on both broad sides of the arc prechamber space 7 such that a backflow channel is formed between the housing wall and the prechamber plate 8. Deflections redirect the gases flowing through these return flow channels back to the arc prechamber space 7.
  • the prechamber plates 8 are geometrically arranged such that a return flow behind these prechamber plates is made possible only in the expansion area of the arc, whereby the arc 13 is accelerated in the direction of the arc quenching device 12.
  • Fig. 2, 3rd and 4 three different embodiments of a Vorhuntplatte are shown in detail.
  • 3rd are each parallel to the arc guide rail 16, two outer slots 20, 22 and a central slot 21 introduced in an overlapping manner in the Vorhuntplatten 8, said at least one slot transverse to the imaginary connection between the arc guide rails 14, 16 extends.
  • the slots 20, 22 open directly in the edge regions of the Vorhuntplatten.
  • Fig. 3 is a narrow web 23 between the slot 20 and edge portion and a narrow web 24 formed between slot 22 and edge portion.
  • Fig. 4 only two slits 25, 26 provided in an overlapping manner in the prechamber plates 8 are provided.
  • edge-side webs can also be formed in this variant.
  • the edge-side web 23 and 24 facilitates the assembly, because it is a tilting of the pre-chamber plate 8 effectively prevented during the fully automatic assembly of the switching device. If a creepage distance should develop after repeated occurrence of an arc over this web 23 or 24, the web melts (provided that a plastic material for the Vorschplatten 8 is used), whereby an elongated slot 20 or 22 is formed.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)

Abstract

An electrical installation device has pre-chamber disc (8) and at least one slot is provided in the pre-chamber disc which runs transverse to the connection provided between the arc guide rails (14,16). The several slots are arranged in the overlapping manner.

Description

Die Erfindung bezieht sich auf ein elektrisches Installationsgerät mit Lichtbogen-Vorkammerraum, Vorkammerplatten und strombegrenzender Lichtbogenlöscheinrichtung gemäß dem Oberbegriff des Anspruchs 1. Die Erfindung kann beispielsweise bei Leitungsschutzschaltern und Motorschutzschaltern verwendet werden.The invention relates to an electrical installation device with arc Vorkammerraum, Vorkammerplatten and current-limiting arc quenching device according to the preamble of claim 1. The invention can be used for example in circuit breakers and motor protection switches.

Leitungsschutzschalter und Motorschutzschalter dienen dazu, im Störungsfall elektrische Leitungen, die mit Überströmen hoher Stromstärke belastet sind, vom speisenden Netz zu trennen. Hierzu sind üblicherweise ein festes und ein bewegliches Kontaktstück in einem Lichtbogen-Vorkammerraum vorgesehen, die mit den jeweiligen Anschlussklemmen verbunden sind. Beim Öffnen des Schaltkontaktes, d. h. beim Abheben des beweglichen Kontaktstückes vom feststehenden Kontaktstück, entsteht ein Schaltlichtbogen, welcher in einer hierzu vorgesehenen Löscheinrichtung gelöscht wird. Der gezogene Lichtbogen kommutiert von den geöffneten Kontaktstücken auf Lichtbogenleitschienen, um sich anschließend in einem Lichtbogenlöschblechpaket (Deion-Löschkammer) zu unterteilen. Dort wird eine hohe Lichtbogenspannung zur Strombegrenzung erzeugt, so dass der Lichtbogen erlischt.Miniature circuit breakers and motor protection switches are used in the event of a fault to disconnect electrical lines that are loaded with high current overcurrents from the supply network. For this purpose, usually a fixed and a movable contact piece are provided in an arc Vorkammerraum, which are connected to the respective terminals. When opening the switching contact, ie when lifting the movable contact piece from the fixed contact piece, a switching arc, which is deleted in a designated extinguishing device. The drawn arc commutes from the opened contact pieces on arc guide rails, and then subdivided into an arc splitter stack (Deion quenching chamber). There, a high arc voltage is generated to limit the current, so that the arc goes out.

Aus der DE 102 42 310 A1 ist eine Lichtbogenlöschanordnung für ein elektrisches Schaltgerät bekannt, die eine Löschkammer (in der bei einer Schalthandlung zwischen einem feststehenden und einem beweglichen Kontaktstück ein Lichtbogen erzeugt wird) und ein mehrere Lichtbogenlöschbleche aufweisendes Lichtbogenlöschblechpaket umfasst, in das der Lichtbogen über Leitschienen hineingeführt wird.From the DE 102 42 310 A1 an arc extinguishing arrangement for an electrical switching device is known, which comprises a quenching chamber (in which a switching action between a fixed and a movable contact piece is generated an arc) and a plurality of arc quenching arc splitter stack in which the arc is guided over guide rails.

Aus der EP 0 251 160 B1 ist eine Löscheinrichtung für einen elektrischen Schalter mit in einem Vorkammerraum befindlichen Kontaktsstücken und einem Löschblechsstapel bekannt, wobei der Vorkammerraum seitlich durch Vorkammerplatten begrenzt wird. Zwischen den Außenseiten der Vorkammerplatten und der inneren Gehäusewand ist ein Spalt, der eine Zurückführung des Überdruckes aus dem Löschblechstapel gestattet, ohne die Entwicklung des Lichtbogens zu stören. Die rückströmende Druckwelle dient zum Ausgleich des Unterdruckes und zur Deionisierung im Kontaktbereich.From the EP 0 251 160 B1 is a quenching device for an electrical switch with located in a Vorkammerraum contact pieces and a quenching stack known, the Vorkammerraum is bounded laterally by Vorkammerplatten. Between the outer sides of the pre-chamber plates and the inner housing wall is a gap which allows a reduction of the overpressure from the quenching plate stack, without disturbing the development of the arc. The backflowing pressure wave is used to compensate for the negative pressure and for deionization in the contact area.

Der Erfindung liegt die Aufgabe zugrunde, ein elektrisches Installationsgerät mit Lichtbogen-Vorkammerraum, Vorkammerplatten und strombegrenzender Lichtbogenlöscheinrichtung anzugeben, dessen hohe Spannungsfestigkeit auch nach mehrmaligem Auslösen mit Entstehen eines Lichtbogens erhalten bleibt.The invention has for its object to provide an electrical installation device with arc Vorkammerraum, Vorkammerplatten and current-limiting arc quenching, the high dielectric strength is maintained even after repeated triggering with the emergence of an arc.

Diese Aufgabe wird in Verbindung mit den Merkmalen des Oberbegriffes erfindungsgemäß durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale gelöst.This object is achieved in conjunction with the features of the preamble according to the invention by the features specified in the characterizing part of claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass die vorgeschlagenen Maßnahmen einfach und kostengünstig realisierbar sind und eine höhere Spannungsfestigkeit bei unverändert kompaktem Aufbau des Schaltgerätes sicherstellen.The achievable with the present invention consist in particular in that the proposed measures are simple and inexpensive to implement and ensure a higher dielectric strength with unchanged compact design of the switching device.

Weitere Vorteile sind aus der nachstehenden Beschreibung ersichtlich.Further advantages will be apparent from the following description.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous embodiments of the invention are characterized in the subclaims.

Die Erfindung wird nachstehend anhand der in der Zeichnung dargestellten Ausführungsbeispiele erläutert. Es zeigen:

Fig.1
einen Schnitt durch ein Schaltgerät,
Fig. 2, 3, 4
drei unterschiedliche Ausführungsformen einer Vorkammerplatte im Detail.
The invention will be explained below with reference to the embodiments illustrated in the drawings. Show it:
Fig.1
a section through a switching device,
Fig. 2, 3, 4
three different embodiments of a Vorkammerplatte in detail.

In Fig. 1 ist ein Schnitt durch ein Schaltgerät 1 - ein Leitungsschutzschalter oder ein Motorschutzschalter - dargestellt. Zum Aufbau eines derartigen auf einer Hutprofiltragschiene montierbaren elektrischen Installationsgerätes wird z. B. auf die eingangs erwähnte DE 102 42 310 A1 hingewiesen. Ein solches Schaltgerät weist in einem schmalen, quaderförmigen, üblicherweise aus zwei Hälften zusammengesetzten Gehäuse aus einem elektrisch isolierenden Kunststoffmaterial (aus einem Thermoplast oder Duroplast) die folgenden Komponenten auf:

  • an beiden Stimseiten Anschlussräume mit Anschlussmitteln 2, 3 zur Verbindung mit Stromschienen und/oder Anschlussleitungen (Eingangs- und Ausgangsanschlüsse),
  • mindestens einen Schaltkontakt mit mindestens einem feststehenden Schaltkontaktstück 4 und mindestens einem beweglichen Kontakthebel 5 mit beweglichem Schaltkontaktstück 6 in einem Lichtbogen-Vorkammerraum 7,
  • Vorkammerplatten 8 nahe den beiden Seitenwänden (Breitseiten) des Lichtbogen-Vorkammerraums 7,
  • einen elektromagnetischen Auslöser 9 inklusive Anker 10 zur Abschaltung von Kurzschlussströmen,
  • einen thermischen Auslöser inklusive Thermobimetall 11 zur Abschaltung von Überströmen,
  • eine strombegrenzende Lichtbogenlöscheinrichtung, insbesondere Lichtbogenlöschblechpaket 12, wobei randseitig der Lichtbogenlöscheinrichtung 12 wenigstens eine Isolierplatte angeordnet ist, deren Außenumfang den Außenumfang der Lichtbogenlöschbleche nicht überragt und die eine Innenausnehmung aufweist,
  • Lichtbogenschienen zur Führung eines zwischen dem feststehenden Schaltkontaktstück 4 und dem beweglichen Schaltkontaktstück 6 entstandenen Lichtbogens 13 vom Entstehungsort im Lichtbogen-Vorkammerraum 7 in die Lichtbogenlöscheinrichtung 12, und zwar eine mit dem feststehenden Schaltkontaktstück 4 elektrisch verbundene Lichtbogenleitschiene 14 inklusive eines in den Lichtbogen-Vorkammerraum 7 ragenden Lichtbogenhoms 15 und eine mit dem beweglichen Schaltkontaktsstück 6 elektrisch verbundene Lichtbogenleitschiene 16,
  • ein Schaltschloss 17, auf welches der elektromagnetische sowie der thermische Auslöser einwirken,
  • einen für manuelle Schalthandlungen zu verwendenden und ebenfalls auf das Schaltschloss 17 einwirkenden Schaltknebel 18 an der Oberseite des Gehäuses,
  • Montagemittel (feste Nase + bewegliche Nase) 19 zur Befestigung des Schaltgerätes 1 auf einer Hutprofiltragschiene an der Bodenseite des Gehäuses.
In Fig. 1 is a section through a switching device 1 - a circuit breaker or a motor protection switch - shown. To build such a mountable on a top hat rail electrical installation device z. B. on the above-mentioned DE 102 42 310 A1 pointed. Such a switching device has in a narrow, cuboid, usually composed of two halves housing of an electrically insulating plastic material (made of a thermoplastic or thermosetting plastic), the following components:
  • Connection spaces with connection means 2, 3 for connection to busbars and / or connection lines (input and output connections) on both end sides,
  • at least one switching contact with at least one stationary switching contact piece 4 and at least one movable contact lever 5 with movable switching contact piece 6 in an arc pre-chamber space 7,
  • Vorkammerplatten 8 near the two side walls (broadsides) of the arc Vorkammerraums 7,
  • an electromagnetic release 9 including armature 10 for switching off short-circuit currents,
  • a thermal release including bimetallic strip 11 for switching off overcurrents,
  • a current-limiting arc quenching device, in particular arc splitter stack 12, wherein at least one insulating plate is arranged at the edge of the arc quenching device 12, whose outer periphery does not project beyond the outer periphery of the arc quenching plates and which has an inner recess,
  • Arc rails for guiding a resulting between the fixed switching contact piece 4 and the movable switching contact piece 6 arc 13 from the point of origin in the arc Vorkammerraum 7 in the arc quenching device 12, namely an electrically connected to the stationary switching contact 4 arc guide rail 14 including a protruding arc in the arc chamber space 7 and an electrically connected to the movable switching contact piece 6 arc guide rail 16,
  • a switching mechanism 17, on which act the electromagnetic and the thermal release,
  • a switching knob 18 to be used for manual switching operations and also acting on the switching mechanism 17 at the top of the housing,
  • Mounting means (fixed nose + movable nose) 19 for mounting the switching device 1 on a hat profile support rail on the bottom side of the housing.

Die beiden vorstehend erwähnten Vorkammerplatten 8 sind aus einem Isoliermaterial (wie Keramik oder Kunststoff) ausgebildet und an beiden Breitseiten des Lichtbogen-Vorkammerraums 7 derart angeordnet, dass sich jeweils zwischen Gehäusewandung und Vorkammerplatte 8 ein Rückströmungskanal ausbildet. Umlenkungen leiten die durch diese Rückströmungskanäle strömenden Gase zurück zum Lichtbogen-Vorkammerraum 7. Die Vorkammerplatten 8 sind geometrisch derart angeordnet, dass nur im Aufweitungsbereich des Lichtbogens eine Rückströmung hinter diesen Vorkammerplatten ermöglicht wird, wodurch der Lichtbogen 13 in Richtung Lichtbogenlöscheinrichtung 12 beschleunigt wird.The two prechamber plates 8 mentioned above are formed from an insulating material (such as ceramic or plastic) and arranged on both broad sides of the arc prechamber space 7 such that a backflow channel is formed between the housing wall and the prechamber plate 8. Deflections redirect the gases flowing through these return flow channels back to the arc prechamber space 7. The prechamber plates 8 are geometrically arranged such that a return flow behind these prechamber plates is made possible only in the expansion area of the arc, whereby the arc 13 is accelerated in the direction of the arc quenching device 12.

Ein innerhalb des Lichtbogen-Vorkammerraums 7 auftretender Lichtbogen 13 wandert zur mit in üblicher Weise mit Innenausnehmungen versehenen Lichtbogenlöscheinrichtung 7. Es ergeben sich zwei Gasströmungen nach dem Umluftprinzip:

  • Eine erste Gasströmung vom Lichtbogen-Vorkammerraum 7 mit Lichtbogen 13 über die Lichtbogenlöscheinrichtung 12 und durch den ersten Rückströmungskanal zurück in den Lichtbogen-Vorkammerraum 7.
  • Eine zweite Gasströmung vom Lichtbogen-Vorkammerraum 7 mit Lichtbogen 13 über die Lichtbogenlöscheinrichtung 12 und durch den zweiten Rückströmungskanal zurück in den Lichtbogen-Vorkammerraum 7.
An occurring within the arc Vorkammerraums 7 arc 13 migrates to provided in the usual way with inner recesses arc quenching device 7. There are two gas flows according to the circulating air principle:
  • A first gas flow from the arc prechamber space 7 with arc 13 via the arc quenching device 12 and through the first return flow channel back into the arc Vorkammerraum. 7
  • A second gas flow from the arc prechamber space 7 with arc 13 via the arc quenching device 12 and through the second return flow channel back into the arc Vorkammerraum. 7

Falls mehr als ein Schaltkontakt mit feststehendem und beweglichem Schaltkontaktstück vorgesehen ist, sind selbstverständlich auch Lichtbogenlöschpakete inklusive Lichtbogenleitschienen entsprechend mehrfach vorhanden.If more than one switching contact with a fixed and movable switching contact piece is provided, it goes without saying that arc extinguishing packages including arc guide rails are likewise present in multiple form.

In den Fig. 2, 3 und 4 sind drei unterschiedliche Ausführungsformen einer Vorkammerplatte im Detail dargestellt. Bei den Ausführungsformen gemäß Fig. 2, 3 sind etwa parallel zur Lichtbogenleitschiene 16 jeweils zwei äußere Schlitze 20, 22 und ein zentraler Schlitz 21 in überlappender Art und Weise in den Vorkammerplatten 8 eingebracht, wobei dieser mindestens eine Schlitz quer zur gedachten Verbindung zwischen den Lichtbogenleitschienen 14, 16 verläuft. Bei der Ausführungsform gemäß Fig. 2 münden die Schlitze 20, 22 unmittelbar in den Kantenbereichen der Vorkammerplatten. Bei der Ausführungsform gemäß Fig. 3 ist ein schmaler Steg 23 zwischen Schlitz 20 und Kantenbereich sowie ein schmaler Steg 24 zwischen Schlitz 22 und Kantenbereich ausgebildet. Bei der Ausführungsform gemäß Fig. 4 sind lediglich zwei in überlappender Art und Weise in den Vorkammerplatten 8 eingebrachte Schlitze 25, 26 vorgesehen. Selbstverständlich können auch bei dieser Variante randseitige Stege ausgebildet sein.In the Fig. 2, 3rd and 4 three different embodiments of a Vorkammerplatte are shown in detail. In the embodiments according to Fig. 2, 3rd are each parallel to the arc guide rail 16, two outer slots 20, 22 and a central slot 21 introduced in an overlapping manner in the Vorkammerplatten 8, said at least one slot transverse to the imaginary connection between the arc guide rails 14, 16 extends. In the embodiment according to Fig. 2 the slots 20, 22 open directly in the edge regions of the Vorkammerplatten. In the embodiment according to Fig. 3 is a narrow web 23 between the slot 20 and edge portion and a narrow web 24 formed between slot 22 and edge portion. In the embodiment according to Fig. 4 only two slits 25, 26 provided in an overlapping manner in the prechamber plates 8 are provided. Of course, edge-side webs can also be formed in this variant.

Bei Entstehung eines Lichtbogens 13 im Lichtbogen-Vorkammerraum 7 besteht das Risiko, dass die Vorkammerplatten 8 zum Teil verrußen. Je nach Anzahl der erfolgen Auslösungen des Schaltgerätes inklusive Entstehung eines Lichtbogens führt dies dazu, dass sich Kriechstrecken auf den Vorkammerplatten 8 zwischen den die Vorkammerplatten 8 kontaktierenden Lichtbogenleitschienen 14, 16 ausbilden und sich die Isolationseigenschaften der Vorkammerplatten 8 verschlechtern. Durch die vorgeschlagenen Schlitze 20, 21, 22, 25, 26 ergibt sich eine Verlängerung dieser Kriechstrecken, da zusätzliche Luftstrecken eingeführt werden. Insgesamt ergibt sich eine höhere Spannungsfestigkeit des Schaltgerätes.When an arc 13 is created in the arc prechamber space 7, there is the risk that the prechamber plates 8 will become sooty in part. Depending on the number of triggered by the switching device including generation of an arc, this leads to creepage distances on the Vorkammerplatten 8 between the Vorkammerplatten 8 contacting arc guide rails 14, 16 form and worsen the insulating properties of Vorkammerplatten 8. The proposed slots 20, 21, 22, 25, 26 results in an extension of these creepage distances, since additional air gaps are introduced. Overall, a higher dielectric strength of the switching device results.

Der randseitige Steg 23 bzw. 24 erleichtert die Montage, denn es wird ein Verkanten der Vorkammerplatte 8 während der vollautomatischen Montage des Schaltgerätes wirksam verhindert. Falls sich eine Kriechstrecke nach mehrmaligem Auftreten eines Lichtbogens über diesen Steg 23 bzw. 24 ausbilden sollte, schmilzt der Steg durch (vorausgesetzt, es wird ein Kunststoffmaterial für die Vorkammerplatten 8 eingesetzt), wodurch sich ein verlängerter Schlitz 20 bzw. 22 ausbildet.The edge-side web 23 and 24 facilitates the assembly, because it is a tilting of the pre-chamber plate 8 effectively prevented during the fully automatic assembly of the switching device. If a creepage distance should develop after repeated occurrence of an arc over this web 23 or 24, the web melts (provided that a plastic material for the Vorkammerplatten 8 is used), whereby an elongated slot 20 or 22 is formed.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Schaltgerätswitchgear
22
Anschlussmittelconnection means
33
Anschlussmittelconnection means
44
feststehendes Schaltkontaktstückfixed switching contact piece
55
beweglicher Kontakthebelmovable contact lever
66
bewegliches Schaltkontaktstückmovable switching contact piece
77
Lichtbogen-VorkammerraumArc chamber area
88th
Vorkammerplattenprechamber
99
elektromagnetischer Auslöserelectromagnetic trigger
1010
Ankeranchor
1111
Thermobimetallthermostatic bimetal
1212
LichtbogenlöscheinrichtungArc quenching device
1313
LichtbogenElectric arc
1414
Lichtbogenleitschienearc guide
1515
LichtbogenhornArcing horn
1616
Lichtbogenleitschienearc guide
1717
Schaltschlossswitch lock
1818
Schaltknebeltoggle switch
1919
Montagemittelmounting means
2020
Schlitzslot
2121
Schlitzslot
2222
Schlitzslot
2323
Stegweb
2424
Stegweb
2525
Schlitzslot
2626
Schlitzslot

Claims (3)

  1. Electrical installation device, in particular a circuit breaker or motor circuit breaker having a housing with connecting means (2, 3) for connection to bus bars and/or connecting lines to at least one end face, having at least one switching contact with a stationary switching contact piece (4) and a moving switching contact piece (6), between which an arc (13) is struck in an arc chute area (7) on disconnection, which arc runs via arc guide rails (14, 16) to a current-limiting arc quenching device (12), wherein chute plates (8) from the are arranged in the area of the arc chute area (7) and form reverse-flow channels between the housing wall and the chute plates (8) from the arc quenching device (12) to the arc chute area (7), characterized in that at least one slot (21) is provided in the chute plates (8) and runs transversally with respect to the imaginary connection between the arc guide rails (14, 16).
  2. Electrical installation device according to Claim 1, characterized in that a plurality of slots (20, 21, 22, 25, 26) are arranged in an overlapping manner.
  3. Electrical installation device according to Claim 1 or 2, characterized in that a web (23, 24) is formed between a slot (20, 22) and an edge area.
EP06008056A 2005-05-13 2006-04-19 Electrical installation device with an arc chute assembly and a current limiting arc extinguishing device Not-in-force EP1722384B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005022213A DE102005022213A1 (en) 2005-05-13 2005-05-13 Electrical installation device with arc prechamber space, prechamber plates and current limiting arc quenching device

Publications (3)

Publication Number Publication Date
EP1722384A2 EP1722384A2 (en) 2006-11-15
EP1722384A3 EP1722384A3 (en) 2007-06-27
EP1722384B1 true EP1722384B1 (en) 2010-10-27

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Application Number Title Priority Date Filing Date
EP06008056A Not-in-force EP1722384B1 (en) 2005-05-13 2006-04-19 Electrical installation device with an arc chute assembly and a current limiting arc extinguishing device

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EP (1) EP1722384B1 (en)
AT (1) ATE486356T1 (en)
DE (2) DE102005022213A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102007001802B4 (en) * 2006-12-22 2010-02-25 Abb Ag Electrical switching device
DE102007032841A1 (en) 2007-07-12 2009-01-15 Abb Ag Installation switching device with insulating housing
DE102014119474A1 (en) 2014-12-22 2016-06-23 Eaton Electrical Ip Gmbh & Co. Kg Erase plate arrangement for a switching device
FR3059460B1 (en) * 2016-11-29 2019-01-25 Hager-Electro Sas CHAMBER FOR RELAXATION OF A DIFFERENTIAL CIRCUIT BREAKER AND CIRCUIT BREAKER THUS EQUIPPED

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DE3621690A1 (en) * 1986-06-27 1988-01-14 Bbc Brown Boveri & Cie DELETING DEVICE FOR ELECTRICAL SWITCHES
DE3824025C2 (en) * 1988-07-15 1994-02-17 Asea Brown Boveri Low voltage switchgear
JPH04255623A (en) * 1991-02-07 1992-09-10 Fuji Electric Co Ltd Circuit breaker
AT410725B (en) * 1993-11-02 2003-07-25 Felten & Guilleaume Ag Oester SELF-SWITCH
DE10242310A1 (en) * 2001-11-16 2003-07-10 Abb Patent Gmbh Electric arc extinguishing unit for an electric switch, comprises a housing with upper and lower sections and an extinguishing chamber
CZ20041197A3 (en) * 2004-12-08 2006-07-12 Hess Trading Sr, Spol. S R.O. Extinguishing chamber for current circuit-breaker

Also Published As

Publication number Publication date
EP1722384A2 (en) 2006-11-15
EP1722384A3 (en) 2007-06-27
ATE486356T1 (en) 2010-11-15
DE502006008162D1 (en) 2010-12-09
DE102005022213A1 (en) 2006-11-16

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