EP0338250A2 - Multiphase circuit breaker - Google Patents

Multiphase circuit breaker Download PDF

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Publication number
EP0338250A2
EP0338250A2 EP89104698A EP89104698A EP0338250A2 EP 0338250 A2 EP0338250 A2 EP 0338250A2 EP 89104698 A EP89104698 A EP 89104698A EP 89104698 A EP89104698 A EP 89104698A EP 0338250 A2 EP0338250 A2 EP 0338250A2
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EP
European Patent Office
Prior art keywords
circuit breaker
individual
adjusting
switch
breaker according
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
EP89104698A
Other languages
German (de)
French (fr)
Other versions
EP0338250A3 (en
EP0338250B1 (en
Inventor
Erich Ringler
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.)
ABL SURSUM BAYERISCHE ELEKTROZUBEHOER GMBH & CO. K
Original Assignee
Abl Sursum Bayerische Elektrozubehor & Co KG GmbH
SURSUM ELEKTRIZITATSGESELLSCHAFT LEYHAUSEN GmbH AND Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Abl Sursum Bayerische Elektrozubehor & Co KG GmbH, SURSUM ELEKTRIZITATSGESELLSCHAFT LEYHAUSEN GmbH AND Co filed Critical Abl Sursum Bayerische Elektrozubehor & Co KG GmbH
Publication of EP0338250A2 publication Critical patent/EP0338250A2/en
Publication of EP0338250A3 publication Critical patent/EP0338250A3/en
Application granted granted Critical
Publication of EP0338250B1 publication Critical patent/EP0338250B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/1009Interconnected mechanisms
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427Adjusting only the electrothermal mechanism
    • H01H71/7445Poly-phase adjustment

Definitions

  • the invention relates to a multi-phase circuit breaker, which is composed of several individual switches in a shell design, which isolates all poles in the event of overload on only one individual switch by coupling the individual switches, and in which each individual switch is completely formed in its shells, including an overload release element and switching mechanism.
  • a circuit breaker of this type which is known in practice is composed of individual switches, such as those e.g. are known from DE-OS 33 39 398.
  • the known circuit breaker is a circuit breaker in which the individual switches are designed for certain overload currents. It is known per se (DE-OS 35 45 930) to use assemblies for circuit breakers for the construction of motor circuit breakers.
  • the motor protection switch has a current range setting device which comprises an actuating member and a current scale assigned to it. In the known motor protection switch, only a single switching mechanism is provided. The production of this motor protection switch is expensive compared to the production of the known circuit breaker of the type mentioned.
  • the object of the invention is therefore to provide a circuit breaker of the type mentioned, which is completed in a simplified manner to a motor protection switch with current range setting.
  • the circuit breaker according to the invention is solving this problem, characterized in that a motor protection switch current range setting device is provided which has an actuating member and a current scale associated with it, and that this engages an adjusting device with an adjusting member in each individual switch.
  • the individual switches known per se are used, which are manufactured in large numbers and therefore inexpensively. Although only one rear derailleur is required per se, individual switches with one rear derailleur each are used for reasons of profitable production.
  • every individual switch is assigned its own current range setting device. Rather, a single current range setting device is provided, which is modified in such a way that it acts on each individual switch at the same time.
  • a simplified current range setting device which forms a functional unit, is added to the multiphase circuit breaker of the type mentioned at the outset. The same components are used for a circuit breaker and a motor protection switch - Coil block, bimetallic device, arcing chamber and also switchgear - used.
  • the actuator is e.g. an angle lever with sliding pivot bearing. It is particularly expedient and before geous if the adjusting member is a wedge structure with each individual switch. This adjustable wedge structure is simple to manufacture and requires little space. By shifting the wedge structure transversely to the working direction of the overload release element, the distance between it and the release element of the switching mechanism is changed.
  • the adjusting members are carried by an intermediate guide piece which is slidably mounted in the shells of the individual switches.
  • This intermediate guide piece is arranged parallel to the row of overload release elements and parallel to the row of switching mechanisms in the individual switches arranged next to one another and thus displaceably transversely to the working direction of the overload triggering elements and switching mechanisms.
  • the wedge-shaped adjustment members are pivotally suspended on the intermediate guide piece in the working direction of the overload release element.
  • a shift of the individual switches to each other, which also causes a change in the position of the intermediate guide piece does not have the effect that the distance between the overload release element and the release element of the switching mechanism is changed.
  • the actuator is usually stored in the shell of one of the individual switches. It is particularly expedient and advantageous if the actuating member is mounted in a wall piece which is subsequently inserted into the shells of at least one individual switch. This simplifies the assembly of the circuit breaker.
  • the actuator is preassembled on the wall piece and the intermediate guide piece can be installed via the opening of the shell to be closed by the wall piece.
  • each individual switch can be operated manually.
  • Overload means both an overcurrent and a short-circuit current.
  • the motor protection switch is mainly used to protect a three-phase motor.
  • the actuator is e.g. a pin guided in a groove or an eccentric.
  • the invention is not limited to a specific embodiment of the overload individual switch in a shell construction.
  • a coil block 2 or electromagnetic release which carries a fixed contact piece 3, in a housing 1.
  • a quenching chamber 4 Below the coil block 2 there is a quenching chamber 4 and then an arc baffle 5, which carries a bimetal or overload tripping element 6 on its side facing away from the quenching chamber, which is adjusted by means of a screw device 7 mounted in the housing 1.
  • a connector 8 is connected via a heating winding 9 and / or a flexible connection to the overload release element 6.
  • a connecting line 10 closes the circuit via a movable contact piece 11, the fixed contact piece 3 and a coil winding 12 to a connector 13.
  • the movable contact 11 carries a switching mechanism 14, which consists of a locking lever 15 and a pawl 16.
  • the pawl 16 is connected by means of a bracket 17 to a switching element 18, whereby a link chain is formed, which closes or opens the circuit when the switching element is operated manually.
  • the adjusting device is shown in more detail in FIG. 4.
  • An intermediate guide piece 21 or adjusting slide carries rotatably suspended in a bearing 23 adjusting members 19 which, on their sides facing the triggering elements 6, have a rising surface 24, viewed parallel to the triggering elements, viewed from the direction of the cover to the triggering elements, that is to say they have a wedge shape.
  • the intermediate guide piece 21 is driven by an actuator 25 designed as an adjusting eccentric, which is rotatably mounted in a wall piece 20 and has an eccentric pin 26, and can be displaced transversely to the working direction of the triggering elements 6.
  • the intermediate guide piece 21 moves without play in a recess in the housing 1, which is achieved according to FIG. 3 by the suspension of tongues 27 located on the intermediate guide piece.
  • the at the free end of the tongues 27 and opposite cams 28 are arranged so that they always move only in a recess of a housing part, so do not have to overcome a separation point.
  • the adjusters 19 are suspended on arms 29 of the intermediate guide piece 21 such that two arms 29 of the intermediate guide piece 21 each encompass the adjusting members 19 in the displacement device without play.
  • the positioning of the adjusting members 19 in the arms 29 of the intermediate guide piece 21 can be done in a variety of ways.
  • the adjusting members can also each comprise a fork of the intermediate guide piece in the form of a fork.
  • the intermediate guide piece can also be actuated via a pin.
  • the wall piece 20 would have a linear scale, instead of an arcuate scale 30 shown in FIG. 1.
  • the wall piece 20 has a resilient latching tongue 31 according to FIG. 8. 3) and at the same time, the wall piece and thus the entire adjusting device is fixed at a defined point in the direction of displacement by means of a thickened part 34.
  • Two tongues 33 are rigid and engage behind on the outer parts of the housing only by pushing the complete individual switches together during final assembly.
  • the housing of the circuit breaker is made of three assembled in self-contained individual housings 22 and held together in a manner known per se.
  • Each individual housing 22 is composed of two different shells 35 and 36.
  • the switching mechanisms in the adjacent individual housings 22 are coupled to one another in a manner not shown in detail, but in a manner known per se, so that when a switching mechanism is triggered, the neighboring switching mechanism is also triggered.
  • the wall piece 20 extends to all individual housings 22, which facilitates the insertion of the intermediate guide piece 21. This is provided with an elongated hole 37 in which the pin 26 engages.

Landscapes

  • Breakers (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Control Of Eletrric Generators (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Protection Of Generators And Motors (AREA)
  • Keying Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

There is a circuit breaker, which is assembled from a plurality of individual circuit breakers 22 in a shell method of construction 35, 36, which, in the event of an overload on only one individual circuit breaker 22, isolates all terminals by coupling the individual circuit breakers and in which each individual circuit breaker 22 is constructed completely in its shells 35, 36, including the overload release element and the switching mechanism. In this case, it is desired to complete the circuit breaker in a simple manner to form a motor circuit breaker with current-range setting. This is achieved in that a motor circuit breaker current-range setting device is provided which has an operating device 26 and a current scale 30 allocated thereto, and in that this one adjusting device engages with an adjusting element 19 into each individual circuit breaker 22. A single current-range setting device is provided which is modified in such a manner that it acts simultaneously on each individual circuit breaker. <IMAGE>

Description

Die Erfindung betrifft einen mehrphasigen Schutzschalter, der aus mehreren Einzelschaltern in Schalenbauweise zusammengesetzt ist, der bei Überlast an nur einem Einzelschalter durch Kopplung der Einzelschalter allpolig trennt und bei dem jeder Einzelschalter in seinen Schalen komplett, einschließlich Überlast-Auslöselement und Schaltwerk ausgebildet ist.The invention relates to a multi-phase circuit breaker, which is composed of several individual switches in a shell design, which isolates all poles in the event of overload on only one individual switch by coupling the individual switches, and in which each individual switch is completely formed in its shells, including an overload release element and switching mechanism.

Ein durch die Praxis bekannter Schutzschalter dieser Art ist aus Einzelschaltern zusammengesetzt, wie sie z.B. durch die DE-OS 33 39 398 bekannt sind. Der bekannte Schutzschalter ist ein Leitungsschutzschalter, bei dem die Einzelschalter für bestimmte Überlast-Stromstärken ausgelegt sind. Es ist an sich bekannt (DE-OS 35 45 930), Baugruppen für Leitungsschutzschalter auch zum Aufbau von Motorschutzschaltern heranzuziehen. Im Unterschied zum Leitungsschutzschalter weist der Motorschutzschalter eine Strombereich-Einstelleinrichtung auf, die ein Betätigungsorgan und eine diesem zugeordnete Stromskala umfaßt. Bei dem bekannten Motorschutzschalter ist nur ein einziges Schaltwerk vorgesehen. Die Herstellung dieses Motorschutzschalters ist verglichen mit der Herstellung des bekannten Leitungsschutzschalters der eingangs genannten Art aufwendig.A circuit breaker of this type which is known in practice is composed of individual switches, such as those e.g. are known from DE-OS 33 39 398. The known circuit breaker is a circuit breaker in which the individual switches are designed for certain overload currents. It is known per se (DE-OS 35 45 930) to use assemblies for circuit breakers for the construction of motor circuit breakers. In contrast to the line circuit breaker, the motor protection switch has a current range setting device which comprises an actuating member and a current scale assigned to it. In the known motor protection switch, only a single switching mechanism is provided. The production of this motor protection switch is expensive compared to the production of the known circuit breaker of the type mentioned.

Aufgabe der Erfindung ist es daher, einen Schutzschalter der eingangs genannten Art zu schaffen, der in vereinfachter Weise zu einem Motorschutzschalter mit Strombereich-Einstellung vervollständigt ist. Der erfindungsgemäße Schutzschalter ist, diese Aufgabe lösend, dadurch gekennzeichnet, daß eine Motorschutzschalter-Strombereich-Einstelleinrichtung vorgesehen ist, die ein Betätigungsorgan und eine die sem zugeordnete Stromskala aufweist, und daß diese eine Einstelleinrichtung mit einem Verstellglied in jeden Einzelschalter eingreift.The object of the invention is therefore to provide a circuit breaker of the type mentioned, which is completed in a simplified manner to a motor protection switch with current range setting. The circuit breaker according to the invention is solving this problem, characterized in that a motor protection switch current range setting device is provided which has an actuating member and a current scale associated with it, and that this engages an adjusting device with an adjusting member in each individual switch.

Für den erfindungsgemäßen Motorschutzschalter werden die an sich bekannten Einzelschalter herangezogen, die in großen Stückzahlen und daher preiswert gefertigt werden. Obwohl an sich nur ein Schaltwerk nötig ist, werden aus Gründen der rentablen Fertigung Einzelschalter mit je einem Schaltwerk verwendet. Jedoch ist nicht jedem Einzelschalter eine eigene Strombereich-Einstelleinrichtung zugeordnet. Vielmehr ist eine einzige Strombereich-Einstelleinrichtung vorgesehen, die dahingehend abgeändert ist, daß sie auf jeden Einzelschalter gleichzeitig einwirkt. Es ist dem mehrphasigen Schutzschalter der eingangs genannten Art eine vereinfachte Strombereich-Einstelleinrichtung hinzugefügt, die eine Funktionseinheit bildet. Es werden für einen Leitungsschutzschalter und einen Motorschutzschalter die gleichen Baukomponenten - Spulenblock, Bimetalleinrichtung, Löschkammer und auch Schaltwerk - verwendet.For the motor protection switch according to the invention, the individual switches known per se are used, which are manufactured in large numbers and therefore inexpensively. Although only one rear derailleur is required per se, individual switches with one rear derailleur each are used for reasons of profitable production. However, not every individual switch is assigned its own current range setting device. Rather, a single current range setting device is provided, which is modified in such a way that it acts on each individual switch at the same time. A simplified current range setting device, which forms a functional unit, is added to the multiphase circuit breaker of the type mentioned at the outset. The same components are used for a circuit breaker and a motor protection switch - Coil block, bimetallic device, arcing chamber and also switchgear - used.

Bauweisen, bei denen ein verschiebbares Verstellglied einer Strombereichs-Einstelleinrichtung in einen Schalter eingreift, sind an sich bekannt. Besonders zweckmäßig und vorteilhaft ist es, wenn das Verstellglied bei jedem Einzelschalter zwischen dem Überlast-Auslöseelement und dem Schaltwerk angeordnet ist. Hier wird durch Verstellen des Verstellgliedes derjenige Bewegungsweg des Überlast-Auslöseelementes verändert, den das Auslöselement zurückzulegen hat, um das zugeordnete Schaltwerk zu betätigen.Structures in which a displaceable adjusting member of a current range setting device engages in a switch are known per se. It is particularly expedient and advantageous if the adjusting member is arranged between the overload release element and the switching mechanism for each individual switch. Here, the movement path of the overload release element that the release element has to cover in order to actuate the associated switching mechanism is changed by adjusting the adjustment element.

Das Verstellglied ist z.B. ein Winkelhebel mit verschiebbarem Drehlager. Besonders zweckmäßig und vor teilhaft ist es, wenn das Verstellglied bei jedem Einzelschalter ein Keilgebilde ist. Dieses Verstell-Keilgebilde ist in der Herstellung einfach und erfordert wenig Platz. Durch die Verschiebung des Keilgebildes quer zur Arbeitsrichtung des Überlast-Auslöseelementes wird der Abstand zwischen diesem und dem Auslöseelement des Schaltwerkes verändert.The actuator is e.g. an angle lever with sliding pivot bearing. It is particularly expedient and before geous if the adjusting member is a wedge structure with each individual switch. This adjustable wedge structure is simple to manufacture and requires little space. By shifting the wedge structure transversely to the working direction of the overload release element, the distance between it and the release element of the switching mechanism is changed.

Besonders zweckmäßig und vorteilhaft ist es auch, wenn die Verstellglieder von einem Zwischenführungsstück getragen sind, das in den Schalen der Einzelschalter verschiebbar gelagert ist. Dieses Zwischenführungsstück ist parallel zu der Reihe von Überlast-Auslöseelementen und parallel zu der Reihe von Schaltwerken in den nebeneinander angeordneten Einzelschaltern und damit quer zur Arbeitsrichtung der Überlast-Auslöseelemente und Schaltwerke verschiebbar angeordnet.It is also particularly expedient and advantageous if the adjusting members are carried by an intermediate guide piece which is slidably mounted in the shells of the individual switches. This intermediate guide piece is arranged parallel to the row of overload release elements and parallel to the row of switching mechanisms in the individual switches arranged next to one another and thus displaceably transversely to the working direction of the overload triggering elements and switching mechanisms.

Es ist denkbar, die Verstellglieder der Einzelschalter durch ein einziges in sich starres Gebilde darzustellen. Besonders zweckmäßig und vorteilhaft ist es jedoch, wenn die Verstellglieder der Einzelschalter relativ zueinander beweglich gelagert sind. Jedes Verstellglied kann sich auf seinen Einzelschalter einstellen. Dies ist wichtig, weil es, bedingt durch Fertigungstoleranzen, Form- und Nachschwindung von Preßteilen, in der Praxis höchstens unter großem Aufwand möglich ist, die Einzelschalter spielfrei miteinander zu verbinden. Bei einem starren Gesamtverstellglied würde sich der Abstand zwischen dem Überlast-Auslöseelement und dem Auslöseelement des Schaltwerkes unkontrolliert verändern, wenn die Einzelschalter parallel zur Arbeitsrichtung der Überlast-Auslöseelemente gegeneinander verschoben sind.It is conceivable to represent the adjustment elements of the individual switches by means of a single rigid structure. However, it is particularly expedient and advantageous if the adjusting elements of the individual switches are mounted such that they can move relative to one another. Each actuator can adjust to its individual switch. This is important because, due to manufacturing tolerances, shape and post-shrinkage of pressed parts, it is at most possible in practice to connect the individual switches with one another without great play. In the case of a rigid overall adjustment element, the distance between the overload trigger element and the trigger element of the switching mechanism would change in an uncontrolled manner if the individual switches were displaced relative to one another parallel to the working direction of the overload trigger elements.

Besonders zweckmäßig und vorteilhaft ist es dabei, wenn die Keilgebilde-Verstellglieder an dem Zwischenführungsstück in Arbeitsrichtung des ÜberlastAuslöseelementes schwenkbar aufgehängt sind. Eine Verschiebung der Einzelschalter zueinander, welche auch eine Veränderung der Lage des Zwischenführungsstückes bewirkt, wirkt sich nicht in der Weise aus, daß der Abstand zwischen Überlast-Auslöseelement und dem Auslöseelement des Schaltwerkes verändert wird.It is particularly expedient and advantageous if the wedge-shaped adjustment members are pivotally suspended on the intermediate guide piece in the working direction of the overload release element. A shift of the individual switches to each other, which also causes a change in the position of the intermediate guide piece does not have the effect that the distance between the overload release element and the release element of the switching mechanism is changed.

Das Betätigungsorgan ist in der Regel in der Schale eines der Einzelschalter gelagert. Besonders zweckmäßig und vorteilhaft ist es dabei, wenn das Betätigungsorgan in einem Wandungsstück gelagert ist, das nachträglich in die Schalen mindestens eines Einzelschalters eingesetzt ist. Dies vereinfacht die Montage des Schutzschalters. Das Betätigungsorgan ist an dem Wandungsstück vormontiert und über die von dem Wandungsstück zu verschließende Öffnung der Schale läßt sich das Zwischenführungsstück einbauen.The actuator is usually stored in the shell of one of the individual switches. It is particularly expedient and advantageous if the actuating member is mounted in a wall piece which is subsequently inserted into the shells of at least one individual switch. This simplifies the assembly of the circuit breaker. The actuator is preassembled on the wall piece and the intermediate guide piece can be installed via the opening of the shell to be closed by the wall piece.

In der Regel ist jeder Einzelschalter manuell betätigbar. Unter Überlast ist sowohl ein Überstrom als auch ein Kurzschlußstrom zu verstehen. Der Motorschutzschalter wird vorwiegend zum Schutz eines Drehstrommotors verwendet. Das Betätigungsorgan ist z.B. ein in einer Nut geführter Zapfen oder ein Exzenter. Die Erfindung ist nicht auf eine bestimmte Ausführungsform des Überlast-Einzelschalters in Schalenbauweise beschränkt.As a rule, each individual switch can be operated manually. Overload means both an overcurrent and a short-circuit current. The motor protection switch is mainly used to protect a three-phase motor. The actuator is e.g. a pin guided in a groove or an eccentric. The invention is not limited to a specific embodiment of the overload individual switch in a shell construction.

In der Zeichnung ist eine bevorzugte Ausführungsform der Erfindung dargestellt und zeigt

  • Fig. 1 eine Draufsicht auf einen Teil eines mehrphasigen Schutzschalters,
  • Fig. 2 einen Schnitt gemäß Linie II-II in Fig. 1,
  • Fig. 3 eine Draufsicht gemäß Fig. 1 nach Wegnahme eines Wandungsstückes,
  • Fig. 4 einen Schnitt gemäß Linie IV-IV in Fig. 1,
  • Fig. 5 eine Ansicht gemäß Linie V-V in Fig. 3,
  • Fig. 6 eine Stirnseitenansicht der Darstellung in Fig. 5,
  • Fig. 7 einen Schnitt gemäß Linie VII-VII in Fig. 1 und
  • Fig. 8 eine Seitenansicht eines Wandungsstückes des Schutzschalters gemäß Fig. 1.
In the drawing, a preferred embodiment of the invention is shown and shows
  • 1 is a plan view of part of a multi-phase circuit breaker,
  • 2 shows a section along line II-II in FIG. 1,
  • 3 is a plan view of FIG. 1 after removal of a wall piece,
  • 4 shows a section along line IV-IV in FIG. 1,
  • 5 is a view along line VV in Fig. 3,
  • 6 is an end view of the representation in Fig. 5,
  • Fig. 7 is a section along line VII-VII in Fig. 1 and
  • 8 shows a side view of a wall piece of the circuit breaker according to FIG. 1.

In einem Gehäuse 1 befindet sich gemäß Fig. 2 ein Spulenblock 2 bzw. elektromagnetischer Auslöser, der ein festes Kontaktstück 3 trägt. Unterhalb des Spulenblockes 2 befindet sich eine Löschkammer 4 und daran anschließend ein Lichtbogenleitblech 5, das an seiner der Löschkammer abgewandten Seite ein Bimetall bzw. Überlast-Auslöseelement 6 trägt, das mittels einer im Gehäuse 1 gelagerten Schraubeinrichtung 7 justiert wird. Ein Anschlußstück 8 ist über eine Heizwicklung 9 und/oder eine flexible Verbindung mit dem Überlast-Auslöseelement 6 verbunden. Eine Verbindungsleitung 10 schließt den Stromkreis über ein bewegliches Kontaktstück 11, das feste Kontaktstück 3 und eine Spulenwicklung 12 zum einen Anschlußstück 13. Das bewegliche Kontaktstück 11 trägt ein Schaltwerk 14, das aus einem Sperrhebel 15 und einer Sperrklinke 16 besteht. Die Sperrklinke 16 ist mittels eines Bügels 17 mit einem Einschaltorgan 18 verbunden, wodurch eine Gelenkkette gebildet ist, welche bei manueller Betätigung des Einschaltorgans den Stromkreis schließt oder öffnet.2, there is a coil block 2 or electromagnetic release, which carries a fixed contact piece 3, in a housing 1. Below the coil block 2 there is a quenching chamber 4 and then an arc baffle 5, which carries a bimetal or overload tripping element 6 on its side facing away from the quenching chamber, which is adjusted by means of a screw device 7 mounted in the housing 1. A connector 8 is connected via a heating winding 9 and / or a flexible connection to the overload release element 6. A connecting line 10 closes the circuit via a movable contact piece 11, the fixed contact piece 3 and a coil winding 12 to a connector 13. The movable contact 11 carries a switching mechanism 14, which consists of a locking lever 15 and a pawl 16. The pawl 16 is connected by means of a bracket 17 to a switching element 18, whereby a link chain is formed, which closes or opens the circuit when the switching element is operated manually.

In Fig. 4 ist die Verstelleinrichtung näher dargestellt. Ein Zwischenführungsstück 21 bzw. Verstellschieber trägt drehbar aufgehängt in einem Lager 23 Verstellglieder 19, welche an ihren, den Auslöseelementen 6 zugewandten Seiten eine, parallel zu den Auslöseelementen betrachtet ansteigende Fläche 24, aus Richtung der Abdeckung zu den Auslöseelementen betrachtet, also eine Keilform aufweisen. Das Zwischenführungsstück 21 ist angetrieben von einem als Einstellexzenter ausgebildeten Betätigungsorgan 25, welches in einem Wandungsstück 20 drehbar gelagert ist und einen exzentrischen Zapfen 26 aufweist, quer zur Arbeitsrichtung der Auslöseelemente 6 verschiebbar. Das Zwischenführungsstück 21 bewegt sich spielfrei in einer Ausnehmung des Gehäuses 1, was gemäß Fig. 3 durch die Federung von sich am Zwischenführungsstück befindlichen Zungen 27 erreicht wird. Die am freien Ende der Zungen 27 und gegenüberliegend angebrachten Nocken 28 sind so angeordnet, daß diese sich immer nur in einer Ausnehmung eines Gehäuseteiles bewegen, also keine Trennstelle überwinden müssen. An Auslegern 29 des Zwischenführungsstückes 21 sind die Verstellglieder 19 so aufgehängt, daß jeweils zwei Ausleger 29 des Zwischenführungsstückes 21 die Verstellglieder 19 in Verschiebeeinrichtung spielfrei umfassen.The adjusting device is shown in more detail in FIG. 4. An intermediate guide piece 21 or adjusting slide carries rotatably suspended in a bearing 23 adjusting members 19 which, on their sides facing the triggering elements 6, have a rising surface 24, viewed parallel to the triggering elements, viewed from the direction of the cover to the triggering elements, that is to say they have a wedge shape. The intermediate guide piece 21 is driven by an actuator 25 designed as an adjusting eccentric, which is rotatably mounted in a wall piece 20 and has an eccentric pin 26, and can be displaced transversely to the working direction of the triggering elements 6. The intermediate guide piece 21 moves without play in a recess in the housing 1, which is achieved according to FIG. 3 by the suspension of tongues 27 located on the intermediate guide piece. The at the free end of the tongues 27 and opposite cams 28 are arranged so that they always move only in a recess of a housing part, so do not have to overcome a separation point. The adjusters 19 are suspended on arms 29 of the intermediate guide piece 21 such that two arms 29 of the intermediate guide piece 21 each encompass the adjusting members 19 in the displacement device without play.

Die Lagerung der Verstellglieder 19 in den Auslegern 29 des Zwischenführungsstückes 21 kann auf mannigfache Art erfolgen. Es können auch die Verstellglieder gabelförmig jeweils einen Ausleger des Zwischenführungsstückes umfassen. Die Betätigung des Zwischenführrungsstückes kann auch über einen Zapfen erfolgen. In diesem Fall würde das Wandungsstück 20 eine lineare Skala aufweisen, anstelle einer in Fig. 1 gezeigten kreisbogenförmigen Skala 30. Das Wandungsstück 20 hat gemäß Fig. 8 eine federnde Verrastzunge 31. Diese Verrastzunge 31 verrastet in einer Aussparung 32 des Gehäuses (siehe Fig. 3) und zugleich wird mittels eines verdickten Teiles 34 das Wandungsstück und damit die gesamte Verstelleinrichtung an einem definierten Punkt in Verschieberichtung fixiert. Zwei Zungen 33 dagegen sind starr und hinter greifen an den Außenteilen der Gehäuse lediglich durch das Zusammenschieben der kompletten Einzelschalter bei der Endmontage.The positioning of the adjusting members 19 in the arms 29 of the intermediate guide piece 21 can be done in a variety of ways. The adjusting members can also each comprise a fork of the intermediate guide piece in the form of a fork. The intermediate guide piece can also be actuated via a pin. In this case, the wall piece 20 would have a linear scale, instead of an arcuate scale 30 shown in FIG. 1. The wall piece 20 has a resilient latching tongue 31 according to FIG. 8. 3) and at the same time, the wall piece and thus the entire adjusting device is fixed at a defined point in the direction of displacement by means of a thickened part 34. Two tongues 33, on the other hand, are rigid and engage behind on the outer parts of the housing only by pushing the complete individual switches together during final assembly.

Das Gehäuse des Schutzschalters ist aus drei in sich geschlossenen Einzelgehäusen 22 zusammengesetzt und in an sich bekannter Weise zusammengehalten. Jedes Einzelgehäuse 22 ist aus zwei voneinander verschiedenen Schalen 35 und 36 zusammengesetzt. Die Schaltwerke in den aneinanderliegenden Einzelgehäusen 22 sind in nicht näher gezeigter, jedoch an sich bekannter Weise so miteinander verkoppelt, daß beim Auslösen eines Schaltwerkes auch das benachbarte Schaltwerk auslöst. Das Wandungsstück 20 erstreckt sich auf sämtliche Einzelgehäuse 22, was das Einfügen des Zwischenführungsstückes 21 erleichtert. Dies ist mit einem Langloch 37 versehen, in das der Zapfen 26 greift.The housing of the circuit breaker is made of three assembled in self-contained individual housings 22 and held together in a manner known per se. Each individual housing 22 is composed of two different shells 35 and 36. The switching mechanisms in the adjacent individual housings 22 are coupled to one another in a manner not shown in detail, but in a manner known per se, so that when a switching mechanism is triggered, the neighboring switching mechanism is also triggered. The wall piece 20 extends to all individual housings 22, which facilitates the insertion of the intermediate guide piece 21. This is provided with an elongated hole 37 in which the pin 26 engages.

Claims (7)

Mehrphasiger Schutzschalter, der aus mehreren Einzelschaltern in Schalenbauweise zusammengesetzt ist, der bei Überlast an nur einem Einzelschalter durch Kopplung der Einzelschalter allpolig trennt und bei dem jeder Einzelschalter in seinen Schalen komplett einschließlich Überlast-Auslöseelement und Schaltwerk ausgebildet ist, dadurch gekennzeichnet, daß eine Motorschutzschalter-Strombereich-Einstelleinrichtung vorgesehen ist, die ein Betätigungsorgan (26) und eine diesem zugeordnete Stromskala (30) aufweist, und daß diese eine Einstelleinrichtung mit einem Verstellglied (19) in jeden Einzelschalter (22) eingreift.Multi-phase circuit breaker, which is composed of several single switches in shell design, which isolates all poles in the event of overload on only one single switch by coupling the individual switches, and in which each individual switch is completely designed in its shells, including overload release element and switching mechanism, characterized in that a motor protection switch Current range setting device is provided, which has an actuating member (26) and a current scale (30) assigned to it, and that this engages an adjusting device with an adjusting member (19) in each individual switch (22). Schutzschalter nach Anspruch 1, dadurch gekennzeichnet, daß das Verstellglied (19) bei jedem Einzelschalter (22) zwischen dem Überlast-Auslöseelement (6) und dem Schaltwerk (14) angeordnet ist.Circuit breaker according to claim 1, characterized in that the adjusting member (19) is arranged in each individual switch (22) between the overload release element (6) and the switching mechanism (14). Schutzschalter nach Anspruch 2, dadurch gekennzeichnet, daß das Verstellglied (19) bei jedem Einzelschalter (22) ein Keilgebilde ist.Circuit breaker according to claim 2, characterized in that the adjusting member (19) is a wedge structure for each individual switch (22). Schutzschalter nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Verstellglieder (19) von einem Zwischenführungsstück (21) getragen sind, das in den drei Schalen (35, 36) der Einzelschalter (22) verschiebbar gelagert ist.Circuit breaker according to claim 1, 2 or 3, characterized in that the adjusting members (19) are carried by an intermediate guide piece (21) which is slidably mounted in the three shells (35, 36) of the individual switches (22). Schutzschalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verstellglieder (19) der Einzelschalter (22) relatiy zueinander beweglich gelagert sind.Circuit breaker according to one of the preceding claims, characterized in that the adjusting elements (19) of the individual switches (22) are mounted so as to be movable relative to one another. Schutzschalter nach Anspruch 5, dadurch gekennzeichnet, daß die Keilgebilde-Verstellglieder (19) an dem Zwischenführungsstück (21) in Arbeitsrichtung des Überlast-Auslöseelementes (6) schwenkbar aufgehängt sind.Circuit breaker according to claim 5, characterized in that the wedge-shaped adjusting members (19) are pivotally suspended on the intermediate guide piece (21) in the working direction of the overload release element (6). Schutzschalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Betätigungsorgan (26) in einem Wandungsstück (20) gelagert ist, das nachträglich in die Schalen (24, 36) mindestens eines Einzelschalters (22) eingesetzt ist.Circuit breaker according to one of the preceding claims, characterized in that the actuating member (26) is mounted in a wall piece (20) which is subsequently in the Shells (24, 36) of at least one individual switch (22) is used.
EP89104698A 1988-04-19 1989-03-16 Multiphase circuit breaker Expired - Lifetime EP0338250B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3812934 1988-04-19
DE3812934A DE3812934A1 (en) 1988-04-19 1988-04-19 MULTI-PHASE CIRCUIT BREAKER

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EP0338250A2 true EP0338250A2 (en) 1989-10-25
EP0338250A3 EP0338250A3 (en) 1990-10-24
EP0338250B1 EP0338250B1 (en) 1995-07-26

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EP89104698A Expired - Lifetime EP0338250B1 (en) 1988-04-19 1989-03-16 Multiphase circuit breaker

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EP (1) EP0338250B1 (en)
AT (1) ATE125641T1 (en)
DE (2) DE3812934A1 (en)
ES (1) ES2075001T3 (en)

Cited By (4)

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FR2727567A1 (en) * 1994-11-28 1996-05-31 Schneider Electric Sa ANTI-DECLASSING DEVICE IN CALIBER OF A CIRCUIT BREAKER FOLLOWING THE ADAPTATION OF AN AUXILIARY
EP0890968A2 (en) * 1997-07-10 1999-01-13 Felten & Guilleaume Austria AG Monophase circuit breaker
WO2002039474A1 (en) * 2000-11-10 2002-05-16 Eaton Corporation Circuit interrupter with thermal trip adjustability
CN102169782A (en) * 2011-04-02 2011-08-31 常熟开关制造有限公司(原常熟开关厂) Current regulation device of release of circuit breaker

Families Citing this family (2)

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DE4040263A1 (en) * 1990-12-17 1992-06-25 Abb Patent Gmbh INSTALLATION DEVICE
DE19653294A1 (en) * 1996-12-20 1998-06-25 Abb Patent Gmbh Tripping device for an electrical installation switch in the event of overcurrent

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FR2003478A1 (en) * 1968-03-08 1969-11-07 Hundt & Weber
CH604363A5 (en) * 1976-09-10 1978-09-15 Landis & Gyr Ag Electrical cut=out relay
GB2062966A (en) * 1979-11-10 1981-05-28 Terasaki Denki Sangyo Kk Circuit interrupter
DE3533431A1 (en) * 1984-03-21 1987-03-26 Kopp Gmbh & Co Kg Heinrich Counter preliminary miniature circuit breaker

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2727567A1 (en) * 1994-11-28 1996-05-31 Schneider Electric Sa ANTI-DECLASSING DEVICE IN CALIBER OF A CIRCUIT BREAKER FOLLOWING THE ADAPTATION OF AN AUXILIARY
EP0715327A1 (en) * 1994-11-28 1996-06-05 Schneider Electric Sa Device against calibration reduction after adaption of an auxiliary
EP0890968A2 (en) * 1997-07-10 1999-01-13 Felten & Guilleaume Austria AG Monophase circuit breaker
EP0890968A3 (en) * 1997-07-10 1999-11-17 Felten & Guilleaume Austria AG Monophase circuit breaker
AU731133B2 (en) * 1997-07-10 2001-03-22 Felten & Guilleaume Austria Ag Single-phase circuit breaker
WO2002039474A1 (en) * 2000-11-10 2002-05-16 Eaton Corporation Circuit interrupter with thermal trip adjustability
AU2002214177B2 (en) * 2000-11-10 2006-05-18 Eaton Corporation Circuit interrupter with thermal trip adjustability
CN102169782A (en) * 2011-04-02 2011-08-31 常熟开关制造有限公司(原常熟开关厂) Current regulation device of release of circuit breaker
CN102169782B (en) * 2011-04-02 2012-12-19 常熟开关制造有限公司(原常熟开关厂) Current regulation device of release of circuit breaker

Also Published As

Publication number Publication date
DE3812934C2 (en) 1992-05-14
ATE125641T1 (en) 1995-08-15
ES2075001T3 (en) 1995-10-01
DE58909358D1 (en) 1995-08-31
DE3812934A1 (en) 1989-11-02
EP0338250A3 (en) 1990-10-24
EP0338250B1 (en) 1995-07-26

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