EP0185277A2 - Electric-circuit breaker - Google Patents

Electric-circuit breaker Download PDF

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Publication number
EP0185277A2
EP0185277A2 EP85115581A EP85115581A EP0185277A2 EP 0185277 A2 EP0185277 A2 EP 0185277A2 EP 85115581 A EP85115581 A EP 85115581A EP 85115581 A EP85115581 A EP 85115581A EP 0185277 A2 EP0185277 A2 EP 0185277A2
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EP
European Patent Office
Prior art keywords
leg
contact piece
guide rail
arc guide
circuit breaker
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
EP85115581A
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German (de)
French (fr)
Other versions
EP0185277B2 (en
EP0185277B1 (en
EP0185277A3 (en
Inventor
Erwin Ing. Grad. Muders
Rudolf Sellner
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.)
ASEA BROWN BOVERI AKTIENGESELLSCHAFT
Original Assignee
Brown Boveri und Cie AG Germany
Asea Brown Boveri AG Germany
BBC Brown Boveri AG Germany
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Application filed by Brown Boveri und Cie AG Germany, Asea Brown Boveri AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Publication of EP0185277A2 publication Critical patent/EP0185277A2/en
Publication of EP0185277A3 publication Critical patent/EP0185277A3/en
Application granted granted Critical
Publication of EP0185277B1 publication Critical patent/EP0185277B1/en
Publication of EP0185277B2 publication Critical patent/EP0185277B2/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • 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
    • H01H71/08—Terminals; Connections
    • 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
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns

Definitions

  • the invention relates to an electrical circuit breaker according to the preamble of claim 1.
  • circuit breakers have become known, all of which have the same structure. They have a contact point which is formed from a fixed and a movable contact piece; the fixed contact piece is followed on one side by the power supply and on the other side by an arc guide rail which drives the arc into an arc quenching plate package.
  • the current feed point is located in front of the contact point, in relation to the arc guide rail adjoining it and also to the direction of arc travel. Due to the assignment of the current feed rail to the contact piece and the arc guide rail to the movable contact lever on which the a movable contact piece is attached, a U-shaped blow loop is formed which tries to expand the arc and drives it into the arc quenching chamber.
  • the object of the invention is to provide an arrangement which allows optimum discharge of the arc from the contact point into the arc-quenching plate with less space.
  • This arrangement is to be used in a particularly advantageous manner when the current feed point must be arranged in the immediate vicinity of the arc guide rail, in particular because of a lack of space, for example with pluggable circuit breakers. Then, due to the limited space, there is no possibility of arranging the fixed contact between the power feed point and the arc guide rail. Rather, the current feed point must be arranged between the fixed contact piece and the arc guide rail. Due to the configuration according to the invention, a U-shaped blow loop for the arc is nevertheless generated, which quickly drives the arc into the arc-quenching plate package. Due to the special design of the fixed contact piece, it is additionally achieved that the resistance of the fixed contact piece is switched out of the current path after the arc has arisen.
  • the sole figure shows an enlarged illustration of a circuit breaker in the contact point area with a movable contact lever and arc guide rail.
  • the electrical switch in which the arrangement according to the invention is to be used, is a commercially available circuit breaker with an electromagnetic release (not shown in more detail), a thermal release, a switch lock and an arc-quenching plate packet, all of which in a commercially available manner together with the arrangement shown in the figure Shell-type housings can be used.
  • the circuit breaker in which the invention is to be applied, is not provided with screw terminals, but with plug pins 10 which are formed on a bracket 11.
  • This bracket 11 has in its bottom region 12 a recess 13 through which a screw 14 is inserted, with which the bracket 11 is fastened to an arc guide rail 15.
  • the arc guide rail 15 is again commercially available and has an essentially L-shaped shape with a leg 16 which opens into the area of an arc quenching plate packet 17 (which is only indicated in the drawing); the other leg 18 the arc - Guardrail has a passage 19 into which the screw 14 is screwed.
  • the leg 18 runs perpendicular to the leg 16 with the interposition of an area 20 which extends obliquely at an angle of approximately 45 ° to both legs.
  • a leg end of a U-shaped horn 21 is arranged between the web or bottom region 12 of the bracket 11 and the leg 18 of the arc guide rail 15.
  • This horn 21 has a first leg 22 with a bore 23 into which the passage 19 of the arc guide rail 15 partially engages and with which the horn 21 is guided in relation to the leg 18 of the arc guide rail 15 in cooperation with the passage 19.
  • a connecting web 24 adjoins the leg 22 and is angled at an acute angle ⁇ (approximately 70 °) to the leg 22.
  • the distance of the end of the region 26 connected to the connecting web 24 from the first leg 22 is greater than the parallel region 27; although the two legs 22 and 25 are of different lengths, their ends 28 and 29 open in one and the same plane, which is perpendicular to the leg 22.
  • a movable contact piece 30 (shown in dashed lines) is applied, which is molded onto a movable contact lever 31. In this way, when the switch is closed, a current flows via the feed point - bracket 11 - screw 14 - leg 18 to the horn 21 with the first leg 22 as far as the movable contact piece 30.
  • a U-shaped blow loop is formed which drives the arc in a manner known per se in the direction of arrow P, so that the arc 32, 32 'on the movable contact piece 30 migrates on one side and on the second leg 25 from its area 26 to area 27 and after skipping from area 27 to area 20 of the arc guide rail 15 on the other side until it has entered the arc-quenching plate packet 17 and is extinguished there. .
  • the current is switched out of the horn 21, so that it is no longer the current I but a current T 1 that bypasses the horn.
  • the configuration according to the invention on the one hand facilitates assembly and, moreover, also facilitates the attachment of the fixed contact piece;
  • the arc run is improved by the shape according to the invention. It is particularly advantageous that the current feed point can be provided independently of the contact point 30/26, without the arcing being prevented by appropriate current paths.
  • the connection of the fixed contact piece to the arc guide rail is a non-positive connection, not a welded connection, which also has advantages.

Abstract

A U-shaped horn is connected by its first limb (21) to the arc conducting rail (15), in order to ensure that the current supply (14) can be applied at any point between the contact point (26, 29) and the arc conducting rail (15); the outer surface of the other limb (25) is then used as a contact surface for the movable contact piece (29). In this way, it is moreover achieved that the screw (14) for the current supply is also used at the same time for attachment of the fixed contact piece to the arc conducting rail, so that the fixed contact piece no longer has to be welded onto the arc conducting rail. <IMAGE>

Description

Die Erfindung betrifft einen elektrischen Leitungsschutzschalter nach dem Oberbegriff des Anspruches 1.The invention relates to an electrical circuit breaker according to the preamble of claim 1.

Es ist eine große Vielzahl von Leitungsschutzschaltern bekanntgeworden, die alle einen gleichen Aufbau haben. Sie besitzen eine Kontaktstelle, die aus einem festen und einem beweglichen Kontaktstück gebildet ist; an dem festen Kontaktstück schließt sich nach der einen Seite die Stromeinspeisung und nach der anderen Seite eine Lichtbogenleitschiene an, die den Lichtbogen in ein Lichtbogenlöschblechpaket hineintreibt. Bei allen diesen Anordnung ist die Stromeinspeisestelle vor der Kontaktstelle gelegen, bezogen auf die daran anschließende Lichtbogenleitschiene und auch auf die Lichtbogenlaufrichtung. Aufgrund der Zuordnung der Stromeinspeiseschiene zu dem Kontaktstück und der Lichtbogenleitschiene zu dem beweglichen Kontakthebel, an dem das bewegliche Kontaktstück angebracht ist, wird eine U-for- mige Blasschleife gebildet, die den Lichtbogen aufzuweiten trachtet und ihn in die Lichtbogenlöschkammer hineintreibt.A large variety of circuit breakers have become known, all of which have the same structure. They have a contact point which is formed from a fixed and a movable contact piece; the fixed contact piece is followed on one side by the power supply and on the other side by an arc guide rail which drives the arc into an arc quenching plate package. In all of these arrangements, the current feed point is located in front of the contact point, in relation to the arc guide rail adjoining it and also to the direction of arc travel. Due to the assignment of the current feed rail to the contact piece and the arc guide rail to the movable contact lever on which the a movable contact piece is attached, a U-shaped blow loop is formed which tries to expand the arc and drives it into the arc quenching chamber.

Aufgabe der Erfindung ist es, eine Anordnung zu schaffen, die bei geringerem Platzangebot eine optimale Abführung des Lichtbogens von der Kontaktstelle hin in das Lichtbogenlöschblech gestattet.The object of the invention is to provide an arrangement which allows optimum discharge of the arc from the contact point into the arc-quenching plate with less space.

Diese Aufgabe wird erfindungsgemäß gelöst durch die kennzeichnenden Merkmale des Anspruches 1.This object is achieved according to the invention by the characterizing features of claim 1.

Diese Anordnung ist in besonders vorteilhafter Weise dann zu verwenden, wenn die Stromeinspeisestelle insbesondere wegen Platzmangels, beispielsweise bei steckbaren Leitungsschutzschaltern, in unmittelbarer Nähe der Lichtbogenleitschiene angeordnet sein muß. Dann besteht nämli-ch aufgrund der Platzsituation nicht die Möglichkeit, das feste Kontaktstück zwischen der Stromeinspeisestelle und der Lichtbogenleitschiene anzuordnen. Man muß vielmehr die Stromeinspeisestelle zwischen dem Festkontaktstück und der Lichtbogenleitschiene anordnen. Aufgrund der erfindungsgemäßen Ausgestaltung wird dennoch eine U-förmig Blasschleife für den Lichtbogen erzeugt, die den Lichtbogen schnell in das Lichtbogenlöschblechpaket treibt. Aufgrund der speziellen Ausgestaltung des Festkontaktstückes wird zusätzlich noch erreicht, daß der Widerstand des Festkontaktstückes aus dem Strompfad nach Entstehen des Lichtbogens herausgeschaltet wird. Dies kann zur Folge haben, daß der Ablauf des Lichtbogens von der Kontaktstelle beschleunigt wird. Ein weiterer Vorteil besteht darin, daß der Festkontakt mit der Leitschiene nicht verschweißt werden muß, sondern daß eine einfache Schraubenverbindung vorgesehen werden kann; Probleme, die darin bestehen, ein Sibler- kontakt,stück auf ein Kupferträgerelement aufzuschweißen, sind dabei im wesentlichen vermieden.This arrangement is to be used in a particularly advantageous manner when the current feed point must be arranged in the immediate vicinity of the arc guide rail, in particular because of a lack of space, for example with pluggable circuit breakers. Then, due to the limited space, there is no possibility of arranging the fixed contact between the power feed point and the arc guide rail. Rather, the current feed point must be arranged between the fixed contact piece and the arc guide rail. Due to the configuration according to the invention, a U-shaped blow loop for the arc is nevertheless generated, which quickly drives the arc into the arc-quenching plate package. Due to the special design of the fixed contact piece, it is additionally achieved that the resistance of the fixed contact piece is switched out of the current path after the arc has arisen. This can have the consequence that the arc is accelerated by the contact point. Another advantage is that the fixed contact does not have to be welded to the guardrail, but that a simple screw connection is provided can be; Problems which consist in welding a piece of Sibler contact onto a copper carrier element are essentially avoided.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments of the invention can be found in the subclaims.

Anhand der Zeichnung, in der ein Ausführungsbeispiel der Erfindung dargestellt ist, soll die Erfindung näher erläutert und beschrieben werden.The invention will be explained and described in more detail with reference to the drawing, in which an embodiment of the invention is shown.

Es zeigt die einzige Figur eine vergrößerte Darstellung eines Leitungsschutzschalters im Kontaktstellenbereich mit beweglichem Kontakthebel und Lichtbogenleitschiene.The sole figure shows an enlarged illustration of a circuit breaker in the contact point area with a movable contact lever and arc guide rail.

Der elektrische Schalter, in den die erfindungsgemäße Anordnung eingesetzt werden soll, ist ein handelsüblicher Leitungsschutzschalter mit einem nicht näher dargestellten elektromagnetischen Auslöser, einem thermischen Auslöser, einem Schaltschloß und einem Lichtbogenlöschblechpaket, die alle in handelsüblicher Weise zusammen mit der in der Figur dargestellten Anordnung in ein Gehäuse in Schalenbaweise eingesetzt werden können. Der Leitungsschutzschalter, bei dem die Erfindung angewendet werden soll, ist nicht mit Schraubanschlußklemmen, sondern mit Steckerstiften 10 versehen, die an einem Bügel 11 ausgebildet sind. Dieser Bügel 11 weist in seinem Bodenbereich 12 eine Ausnehmung 13 auf, durch die eine Schraube 14 hindurchgesteckt ist, mit welcher der Bügel 11 an einer Lichtbogenleitschiene 15 befestigt ist. Die Lichtbogenleitschiene 15 ist wieder handelsüblich aufgebaut und besitzt eine im wesentlichen L-förmige Form mit einem Schenkel 16, der in den Bereich eines Lichtbogenlöschblechpaketes 17 (das nur andeutungsweise gezeichnet ist) einmündet; der andere Schenkel 18 der Lichtbogen - leitschiene besitzt einen Durchzug 19, in den die Schraube 14 eingeschraubt ist. Der Schenkel 18 verläuft senkrecht zu dem Schenkel 16 unter Zwischenfügung eines schräg unter einem Winkel von ca. 45° zu beiden Sehenkeln verlaufenden Bereiches 20.The electrical switch, in which the arrangement according to the invention is to be used, is a commercially available circuit breaker with an electromagnetic release (not shown in more detail), a thermal release, a switch lock and an arc-quenching plate packet, all of which in a commercially available manner together with the arrangement shown in the figure Shell-type housings can be used. The circuit breaker, in which the invention is to be applied, is not provided with screw terminals, but with plug pins 10 which are formed on a bracket 11. This bracket 11 has in its bottom region 12 a recess 13 through which a screw 14 is inserted, with which the bracket 11 is fastened to an arc guide rail 15. The arc guide rail 15 is again commercially available and has an essentially L-shaped shape with a leg 16 which opens into the area of an arc quenching plate packet 17 (which is only indicated in the drawing); the other leg 18 the arc - Guardrail has a passage 19 into which the screw 14 is screwed. The leg 18 runs perpendicular to the leg 16 with the interposition of an area 20 which extends obliquely at an angle of approximately 45 ° to both legs.

Zwischen dem Steg beziehungsweise Bodenbereich 12 des Bügels 11 und dem Schenkel 18 der Lichtbogenleitschiene 15 ist ein Schenkelende eines U-förmigen Hornes 21 angeordnet. Dieses Horn 21 besitzt einen ersten Schenkel 22 mit einer Bohrung 23, in die der Durchzug 19 der Lichtbogenleitschiene 15 teilweise hineingreift und mit der in Zusammenwirkung mit dem Durchzug 19 das Horn 21 bezogen auf den Schenkel 18 der Lichtbogenleitschiene 15 geführt ist. An den Schenkel 22 schließt sich ein Verbindungssteg 24 an, der unter einem spitzen Winkel α (ca. 70°) zu dem Schenkel 22 abgewinkelt ist. Daran schließt sich unter einem Winkel ß (ca. 90°) ein zweiter Schenkel 25 an, wobei dieser zweite Schenkel 25 einen zum ersten Schenkel hin geneigten Bereich 26 und einen parallel zu dem ersten Schenkel 22 verlaufenden Bereich 27 aufweist. Auf diese Weise ist der Abstand des mit dem Verbindungssteg 24 verbundenen Endes des Bereiches 26 vom ersten Schenkel 22 größer als der parallele Bereich 27; obwohl die beiden Schenkel 22 und 25 unterschiedlich lang sind, münden ihre Enden 28 und 29 in ein und derselben Ebene, welche senkrecht zu dem Schenkel 22 verläuft. Im Bereich 26, nahe dem Verbindungssteg 24, legt sich ein bewegliches Kontaktstück 30 (strichliert gezeichnet) an, das an einem beweglichen Kontakthebel 31 angeformt ist. Auf diese Weise fließt beim geschlossenen Schalter ein Strom über die Einspeisestelle - Bügel 11 - Schraube 14 - Schenkel 18 hin zu dem Horn 21 mit dem ersten Schenkel 22 bis zum beweglichen Kontaktstück 30. Sowie der Schalter öffnet und sich das bewegliche Kontaktstück 30 von dem Bereich 26 entfernt, wird ein Lichtbogen 32 gezogen, dessen einer Fußpunkt entlang den Bereichen 26 und 27 des zweiten Schenkels 25 wandert und an dessen freien Ende 28 auf den Bereich 20 der Lichtbogenleitschiene 15 überspringt, siehe Lichtbogen 32'. Durch den Strompfad I im Schenkel 25, den Lichtbogen 32 und den beweglichen Kontakthebel 30 wird eine U-förmige Blasschleife gebildet, die den Lichtbogen in an sich bekannter Weise in Pfeilrichtung P antreibt, so daß der Lichtbogen 32, 32' am beweglichen Kontaktstück 30 auf der einen Seite und auf dem zweiten Schenkel 25 von dessen Bereich 26 zum Bereich 27 sowie nach Uberspringen von dem Bereich 27 auf den Bereich 20 der Lichtbogenleitschiene 15 auf der anderen Seite entlangwandert, bis er in das Lichtbogenlöschblechpaket 17 eingelaufen ist und dort verlischt.. A leg end of a U-shaped horn 21 is arranged between the web or bottom region 12 of the bracket 11 and the leg 18 of the arc guide rail 15. This horn 21 has a first leg 22 with a bore 23 into which the passage 19 of the arc guide rail 15 partially engages and with which the horn 21 is guided in relation to the leg 18 of the arc guide rail 15 in cooperation with the passage 19. A connecting web 24 adjoins the leg 22 and is angled at an acute angle α (approximately 70 °) to the leg 22. This is followed by a second leg 25 at an angle β (approx. 90 °), this second leg 25 having an area 26 inclined towards the first leg and an area 27 running parallel to the first leg 22. In this way, the distance of the end of the region 26 connected to the connecting web 24 from the first leg 22 is greater than the parallel region 27; although the two legs 22 and 25 are of different lengths, their ends 28 and 29 open in one and the same plane, which is perpendicular to the leg 22. In the area 26, near the connecting web 24, a movable contact piece 30 (shown in dashed lines) is applied, which is molded onto a movable contact lever 31. In this way, when the switch is closed, a current flows via the feed point - bracket 11 - screw 14 - leg 18 to the horn 21 with the first leg 22 as far as the movable contact piece 30. As soon as the switch opens and the movable contact piece 30 opens from the area 26, an arc 32 is drawn, one of its base points migrates along the areas 26 and 27 of the second leg 25 and at its free end 28 jumps onto the area 20 of the arc guide rail 15, see arc 32 '. Through the current path I in the leg 25, the arc 32 and the movable contact lever 30, a U-shaped blow loop is formed which drives the arc in a manner known per se in the direction of arrow P, so that the arc 32, 32 'on the movable contact piece 30 migrates on one side and on the second leg 25 from its area 26 to area 27 and after skipping from area 27 to area 20 of the arc guide rail 15 on the other side until it has entered the arc-quenching plate packet 17 and is extinguished there. .

Aufgrund der speziellen Ausgestaltung des Hornes 21 wird der Strom aus dem Horn.21 herausgeschaltet, so daß nun nicht mehr der Strom I, sondern ein Strom T1 unter Umgehung des Horns fließt.Because of the special design of the horn 21, the current is switched out of the horn 21, so that it is no longer the current I but a current T 1 that bypasses the horn.

Die erfindungsgemäße Ausgestaltung bewirkt zum einen eine Erleichterung der Montage und darüberhinaus auch eine Erleichterung bezüglich der Anbringung des Festkontaktstückes; außerdem ist festgestellt worden, daß der Lichtbogenablauf durch die erfindungsgemäße Form durchaus verbessert wird. Von besonderem Vorteil ist, daß die Stromeinspeisestelle unabhängig von der Kontaktstelle 30/26 vorgesehen sein kann, ohne daß der Lichtbogenablauf durch entsprechende Stromwege gehindert wird.The configuration according to the invention on the one hand facilitates assembly and, moreover, also facilitates the attachment of the fixed contact piece; In addition, it has been found that the arc run is improved by the shape according to the invention. It is particularly advantageous that the current feed point can be provided independently of the contact point 30/26, without the arcing being prevented by appropriate current paths.

Aufgrund der erfindungsgemäßen .Ausgestaltung wird die Stromeinspeisung und die Befestigung der Anschlußstifte 10 am Bügel 11 gleichzeitig auch zur Halterung und zur Befestigung des Festkontaktstückes an der Lichtbogenleitschiene herangezogen. Die Montage wird insbesondere also deshalb vereinfacht, weil eine geson- derte Anbringung eines Festkontaktstückes und einer Schraubklemme für die Stromeinspeisung nicht mehr nötig ist. Die Verbindung des Festkontaktstückes mit der Lichtbogenleitschiene ist erfindungsgmäß eine kraftschlüssige Verbindung, nicht eine Schweißverbindung, was ebenfalls Vorteile mit sich bringt.Because of the design according to the invention, the current feed and the attachment of the connecting pins 10 to the bracket 11 are simultaneously used for holding and for attaching the fixed contact piece to the Arc guide rail used. The assembly is therefore particularly so simplified because a sepa - made installation of a fixed contact piece and a screw terminal for the power supply is no longer necessary. According to the invention, the connection of the fixed contact piece to the arc guide rail is a non-positive connection, not a welded connection, which also has advantages.

Claims (5)

1. Elektrischer Leitungsschutzschalter mit einem Festkontaktstück und einem beweglichen Kontaktstück, einer an das Festkontaktstück anschließenden Lichtbogenleitschiene und mit einer mit der Lichtbogenleitschiene verbundenen Stromeinspeisestelle, dadurch gekennzeichnet, daß das Festkontaktstück als U-förmiges Horn (21) ausgebildet ist, wobei dessen erster freier Schenkel (22) an seinem freien Ende mit der Lichtbogenleitschiene (15) verbunden ist und dessen zweiter freier Schenkel (25) an seiner Außenfläche, nahe am angrenzenden Verbindungssteg (24) für beide freien Schenkel (22, 25), eine mit dem beweglichen Kontaktstück (30/31) zusammenwirkende Kontaktstelle bildet, und daß die Stromeinspeisestelle (Schraube 14) an der Verbindungsstelle des.ersten Schenkels mit der Lichtbogenleitschiene und somit zwischen der Kontaktstelle und dem wesentlichen Erstreckungsbereich der Lichtbogenleitschiene gelegen ist.1.Electric circuit breaker with a fixed contact piece and a movable contact piece, an arc guide rail adjoining the fixed contact piece and with a current feed point connected to the arc guide rail, characterized in that the fixed contact piece is designed as a U-shaped horn (21), the first free leg ( 22) is connected at its free end to the arc guide rail (15) and its second free leg (25) on its outer surface, close to the adjacent connecting web (24) for both free legs (22, 25), one with the movable contact piece (30 / 31) forms a cooperating contact point, and that the current feed point (screw 14) is located at the junction of the first leg with the arc guide rail and thus between the contact point and the essential extension area of the arc guide rail. 2. Leitungsschutzschalter nach Anspruch 1, dadurch gekennzeichnet, daß der Verbindungssteg (24) des U-förmigen Horns (21) unter einem spitzen Winkel (ä ) zu dem ersten Schenkel (22) abgebogen ist.2. Circuit breaker according to claim 1, characterized in that the connecting web (24) of the U-shaped horn (21) is bent at an acute angle (ä) to the first leg (22). 3. Leitungsschutzschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der zweite Schenkel (25), ausgehend vom Verbindungssteg (24), einen schräg zum anderen Schenkel (25) verlaufenden (26) und, daran anschließend, einen parallel zum anderen Schenkel verlaufenden Bereich (27) aufweist, und daß am schräg verlaufenden Bereich (26) die Kontaktstelle gelegen ist, an welcher in Einschaltstellung das bewegliche Kontaktstück (30) anliegt.3. Circuit breaker according to claim 1 or 2, characterized in that the second leg (25), starting from the connecting web (24), an oblique to the other leg (25) extending (26) and, subsequently, a parallel to the other leg Region (27), and that the contact point is located on the inclined region (26), against which the movable contact piece (30) rests in the switched-on position. 4. Leitungsschutzschalter nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die freien Enden (28, 29) beider Schenkel (22, 25) des Horns (21) in eine gemeinsame, senkrecht zu dem Verlauf des ersten Schenkels (22) gelegene Ebene einmünden.4. Circuit breaker according to one of the preceding claims, characterized in that the free ends (28, 29) of both legs (22, 25) of the horn (21) open into a common plane perpendicular to the course of the first leg (22) . 5. Leitungsschutzschalter nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Verbindung der Lichtbogenleitschiene (15) mit dem Ende des ersten Schenkels (22) des U-förmigen Hornes (21) mittels eines Schraubelementes (Schraube 14) erfolgt, welche gleichzeitig der Halterung eines Anschlußelementes (Bügel 11) für die Stromeinspeisung dient.5. Miniature circuit breaker according to one of the preceding claims, characterized in that the connection of the arc guide rail (15) to the end of the first leg (22) of the U-shaped horn (21) by means of a screw element (screw 14), which simultaneously the bracket a connecting element (bracket 11) is used for the power supply.
EP85115581A 1984-12-18 1985-12-07 Electric-circuit breaker Expired - Lifetime EP0185277B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843446041 DE3446041A1 (en) 1984-12-18 1984-12-18 ELECTRICAL CIRCUIT BREAKER
DE3446041 1984-12-18

Publications (4)

Publication Number Publication Date
EP0185277A2 true EP0185277A2 (en) 1986-06-25
EP0185277A3 EP0185277A3 (en) 1988-11-30
EP0185277B1 EP0185277B1 (en) 1991-10-23
EP0185277B2 EP0185277B2 (en) 1994-04-20

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ID=6253023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115581A Expired - Lifetime EP0185277B2 (en) 1984-12-18 1985-12-07 Electric-circuit breaker

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EP (1) EP0185277B2 (en)
DE (2) DE3446041A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990013903A1 (en) * 1989-05-09 1990-11-15 Heinrich Kopp Gmbh & Co. Kg Automatic cutout

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062316B (en) * 1958-04-03 1959-07-30 Licentia Gmbh Arc extinguishing chamber for air guns
US3555471A (en) * 1968-02-28 1971-01-12 Vni I Pk I Electr Oapparatov Automatic breaker with coil adjustable to effect current limiting or electrodynamic blowoff compensation
FR2378344A1 (en) * 1977-01-25 1978-08-18 Telemecanique Electrique BLOWING PART

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461349A1 (en) * 1979-07-12 1981-01-30 Merlin Gerin IMPROVED CUTTING CHAMBER FOR MULTIPOLAR LOW VOLTAGE CIRCUIT BREAKER WITH MOLDED HOUSING

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062316B (en) * 1958-04-03 1959-07-30 Licentia Gmbh Arc extinguishing chamber for air guns
US3555471A (en) * 1968-02-28 1971-01-12 Vni I Pk I Electr Oapparatov Automatic breaker with coil adjustable to effect current limiting or electrodynamic blowoff compensation
FR2378344A1 (en) * 1977-01-25 1978-08-18 Telemecanique Electrique BLOWING PART

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990013903A1 (en) * 1989-05-09 1990-11-15 Heinrich Kopp Gmbh & Co. Kg Automatic cutout

Also Published As

Publication number Publication date
EP0185277B2 (en) 1994-04-20
DE3584506D1 (en) 1991-11-28
EP0185277B1 (en) 1991-10-23
EP0185277A3 (en) 1988-11-30
DE3446041C2 (en) 1993-05-19
DE3446041A1 (en) 1986-06-19

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