EP3168850B1 - Isolation device and electromechanical protection switching device - Google Patents

Isolation device and electromechanical protection switching device Download PDF

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Publication number
EP3168850B1
EP3168850B1 EP16190725.8A EP16190725A EP3168850B1 EP 3168850 B1 EP3168850 B1 EP 3168850B1 EP 16190725 A EP16190725 A EP 16190725A EP 3168850 B1 EP3168850 B1 EP 3168850B1
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EP
European Patent Office
Prior art keywords
switching device
protective switching
opening
main body
insulating
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EP16190725.8A
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German (de)
French (fr)
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EP3168850A1 (en
Inventor
Martin Emmerlich
Marco Lüders
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Siemens AG
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Siemens AG
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Publication of EP3168850A1 publication Critical patent/EP3168850A1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02Bases, casings, or covers
    • H01H9/0264Protective covers for terminals
    • 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
    • H01H71/08Terminals; Connections

Definitions

  • the invention relates to an insulation device for covering a conductive contact element of an electro-mechanical protection switching device, in particular a circuit breaker, a residual current circuit breaker or a circuit breaker. Furthermore, the invention relates to an electromechanical protective switching device, which is designed in particular as a circuit breaker, as a residual current circuit breaker or as a circuit breaker and having at least one such isolation device.
  • Circuit breakers are used in particular as switching and safety elements in electrical energy supply networks.
  • Circuit breakers are specially designed for high currents.
  • a circuit breaker is an overcurrent protection device in the electrical installation and is used in particular in the field of low-voltage networks.
  • Circuit breakers and miniature circuit breakers guarantee a safe shutdown in the event of a short circuit and protect consumers and systems from overload. They also protect cables from damage due to excessive heating as a result of excessive electrical current.
  • a residual current circuit breaker is a protective device to ensure protection against a dangerous fault current in an electrical system.
  • a fault current which is also referred to as differential current, occurs when a live line part has an electrical contact with earth. This is for example the case when a person touches a live part of an electrical system: in this case, the current flows as a fault current through the body of the person concerned against the ground.
  • the electrical system quickly and safely disconnect all poles from the mains.
  • the terms residual current circuit breaker (RCD) or RCD (Residual Current Protective Device) are also used equivalently.
  • Circuit-breakers such as circuit breakers, miniature circuit breakers or residual current circuit breakers are designed to switch off the circuit automatically in the event of a short circuit, overload or fault current, thus disconnecting it from the mains.
  • they have a switching contact pair with a stationary switching contact and a switching contact which can be moved relative thereto, which is opened when necessary in order to interrupt the flow of current.
  • these devices For electrical contacting with one or more external connection conductors, these devices have one or a plurality of connection terminals into which the connection conductor can be inserted. By pressing a corresponding clamping screw, the connection conductor can be securely clamped, so that the protective switching device is securely connected to the electrical connection conductor.
  • the EP 1 069 578 A1 discloses a protective switching device with an insulation device, which is adaptable by separating transverse webs to different conductor cross-sections.
  • the insulation device according to the invention is provided to cover a conductive contact element of an electro-mechanical protection device, in particular a circuit breaker, a residual current circuit breaker or a circuit breaker, wherein the conductive contact element is arranged behind a housing opening of the protective device.
  • the insulation device has a main body, which can be fastened to a housing of the protective switching device and has an opening for passing at least one electrical connection line in order to contact the latter with the contact element of the protective switching device.
  • the insulation device furthermore has an insulation element which is firmly but detachably connected to the base body in the region of the opening.
  • the opening in turn, has an opening cross-section which can be adapted to a line cross-section of the electrical connection line with the aid of the insulation element in such a way that manual contact of the contact element is excluded in the installed state of the insulation device on the protection switching device.
  • the insulation device if national safety requirements - for example, with regard to the creepage distances and creepage distances to be complied with - require this, be attached to a protective switching device in the region of the electrical connection terminal.
  • the term "contact element" encompasses all electrically conductive components in the connection region of the protective switching device, for example, the clamping frame or the pressure piece of the terminal, but also the contact itself.
  • the adaptation of the opening cross section to the cross section of the connecting line by means of the insulating element is achieved in that the insulating element partially covers the opening cross section.
  • the adjustment of the opening cross-section can be done both by an assembly and by disassembly of the insulation element: In the case of mounting the insulation element on the main body of the insulation device, the opening cross-section is reduced, whereby an adaptation to a connecting line with a small cross-section can be realized. In the case of dismantling, ie removal of the insulating element from the base body of the opening cross-section is increased accordingly, whereby an adaptation to a connecting cable is achieved with a large cross-section.
  • a simple and cost-effective protection against contact of the degree of protection IP20 can also be realized for different cable cross-sections.
  • differently dimensioned insulation elements can be combined with the base body, whereby the opening cross-section is adaptable to different cable cross sections.
  • the insulation element can be connected to the base body by inserting or clipping. Both the insertion and the clipping of the insulation element on the base body of the insulation device is a simple and inexpensive way to mount the insulation element to the base body.
  • the insulation element is integrally but detachably connected to the base body. Due to the one-piece embodiment, a time-consuming installation of the insulating element on the main body is unnecessary, which is why the isolation device is relatively inexpensive to produce.
  • the isolation device is designed plugged or pushed onto the protective switching device.
  • a plugging or pushing the isolation device on the circuit breaker allows easy to perform mounting the insulation device, especially when retrofitting existing electrical installations. The assembly effort is significantly reduced.
  • the main body is substantially U-shaped, wherein a first leg of the U-shaped main body of a first partition and a second leg of the U-shaped base body formed by a second partition are.
  • the first and the second leg serve to electrically isolate the protective switching device in the region of its electrical terminal against a neighboring arranged protective switching device, for example in a distribution box.
  • the electrical connections of adjacent protection devices can be close to each other, so that the prescribed clearances and creepage distances can not be met without additional insulation of the connections.
  • the first and the second partition wall which are arranged between the electrical terminals adjacent to each other arranged protective switching devices, represents such insulation.
  • the insulation device to the protection device can be fastened.
  • the outer distance of the first partition to the second partition substantially corresponds to a width of the protective switching device.
  • the insulation device is substantially flush with the broad sides, which define the width of the protective device, from.
  • the isolation device can be produced by plastic injection molding.
  • plastic injection molding represents an extremely cost-effective production method.
  • the insulating element it is also possible for the insulating element to be injection-molded onto the main body of the insulation device via one or more sprue webs. The insulation element then already covers part of the opening cross-section. To adapt to a connecting cable with a large cable cross section, the insulating element is separated by separating the sprue webs, whereby the opening cross-section is increased accordingly.
  • the electromechanical protective switching device according to the invention which is designed in particular as a circuit breaker, as a residual current circuit breaker or as a circuit breaker, has at least one insulation device of the type described above.
  • the protective switching device is arranged in a busbar network, wherein the insulation device for electrically insulating the protective switching device against at least one adjacent arranged protective switching device is used.
  • the insulation device for electrically insulating the protective switching device against at least one adjacent arranged protective switching device is used.
  • the insulation device 100 has a base body with a U-shaped cross section, wherein a connection region 103 of the U-shaped base body connects a first partition 101 formed as a first leg to a second partition wall 102 designed as a second leg.
  • a connection region 103 In the connection region 103, an opening 105 for passing an electrical connection line (not shown) is formed in order in the assembled state of the insulation device 100 to a protective switching device 1 (see FIGS. 5A and 5B ) electrically conductively connected to a contact element of the protective switching device 1.
  • a contact element for example, the clamping frame or the pressure piece of the terminal, but also the contact itself, come into consideration.
  • the insulation device 100 has a plurality of fastening elements 104, which are formed in the region of the connection region 103 on the base body of the insulation device 100.
  • the insulating device 100 has a plurality of stiffening ribs 108, which extend from the first partition wall 101 and the second partition wall 102 toward the connection region 103 in order to give the main body of the insulation device 100 a higher rigidity.
  • the insulation device 100 has an insulation element 110 in the form of a small plate, which in this first exemplary embodiment is connected to the main body of the insulation device 100 via two sprue webs 111 in such a way that it covers part of the opening 105.
  • the insulation device 100 is thus provided for passing an electrical connection line with a small line cross-section.
  • the insulating element 110 by rotation about a defined by the sprue webs 111 axis of the main body be separated to increase the opening cross section of the opening 105 accordingly.
  • the insulating element 110 is thus integrally connected - and thus fixed - but releasably connected to the main body of the insulation device 100. In this way, the isolation device 100 can be quickly and easily adapted to different electrical connection lines with different conductor cross-section.
  • FIGS. 2A and 2B schematically show a variant of the first embodiment of the insulation device 100 according to the invention.
  • the isolation device 100 Further, a web 107 which extends from the first partition wall 101 to the second partition wall 102 and thereby divides the opening 105 into a first partial opening 105-1 and a second partial opening 105-2.
  • the two partial openings 105-1 and 105-2 are each dimensioned too small for themselves to be able to pass through with their fingers. A contact of a mounted behind the mounted insulation device 100 contact element is thus effectively prevented.
  • the lower, first partial opening 105-1 is provided for passing a busbar or a feed element, while the upper, second partial opening 105-2 is used for passing the electrical connection line.
  • the opening cross section of the upper, second partial opening 105-2 is in turn partially covered by the insulation element 110.
  • the insulation element 110 is in turn connected via two sprue webs 111 to the base body.
  • the opening cross section of the second partial opening 105-2 can be increased by separating out the insulation element 110.
  • the insulation element 110 which again has the shape of a small plate, is not formed on the main body of the insulation device 100, but represents an independent component which can be fastened to the base body of the insulation device 100 by means of a corresponding holding device.
  • the base body has a plurality of retaining elements 109 on the inner sides of the two partition walls 101 and 102 oriented toward one another.
  • the insulation element 110 can be inserted from above into the main body of the insulation device 100 in order to be fixed in this position by means of the retaining elements 109, for example by latching by means of a suitable latching connection.
  • the insulation element 110 is fastenable by means of a clip connection by pressing in from the front on the main body of the insulation device 100. In both cases, the insulation element 110 is firmly but detachably connected to the main body of the insulation device 100.
  • the opening 105 is again divided into the first partial opening 105-1 and the second partial opening 105-2.
  • the second partial opening 105-2 is again partially covered by the insulating member 110, whereby the opening cross section of the second partial opening 105-2 can be adjusted by insertion or removal of the insulating member 110 to the respective line cross section of the electrical connection line.
  • FIGS. 4A to 4C show schematic representations of possible variants of the second embodiment of the insulation device 100 according to the invention. These variants all have the same base body, in which the insulation element 110 in turn by means of the holding elements 109 on the main body of the insulation device 100 can be fastened. This attachment can be realized both via a plug-in connection by inserting "from above” as well as a clip connection by pressing "from the front".
  • the insulation devices 100 shown differ in terms of the insulation elements 110 used: these are dimensioned differently, so that by a suitable choice of the corresponding insulation element 110, a simple adaptation to the line cross section of each electrical connection conductor used can be realized. In this way, a simple and extremely cost variant formation can be realized.
  • FIG. 4C illustrated variant it should be noted that these in principle also a web 107th which, in the illustration of the FIG. 4C is covered by the insulation element 110.
  • the insulation device 100 and the insulation element 110 are by definition made of an insulating material, preferably of a thermoplastic or thermosetting plastic.
  • thermoplastics are - especially in large quantities, as occurring in industrial mass production - produced extremely inexpensively by means of plastic injection molding process, in particular, while also the web 107 and / or the insulating member 110 to the main body of the insulating device 100th be formed.
  • FIGS. 5A and 5B show schematic, perspective views of the inventive electro-mechanical protection device 1 with an attached isolation device 100.
  • the protective switching device 1 has a housing 2. On a front side 4 of the housing 2, an actuating element 3 for manual actuation of the protective switching device 1 is arranged.
  • the front side 4 opposite is a mounting side 5, are provided on the fastening means 9 for fixing the housing 2 to a so-called support or DIN rail (not shown).
  • the housing 2 of the protective switching device 1 still the front and the mounting side 4 and 5 interconnecting narrow and broad sides 6 and 7.
  • the housing 2 in each case has a housing opening 8 for insertion of an electrical connecting line (not shown), in order to electrically connect these to the inner contact element of the protective switching device 1.
  • an insulating device 100 is attached to the housing 2 of the protective switching device 1 respectively.
  • the first partial opening 105-1 and the second partial opening 105-2 are in the region of the housing opening 8, so that an electrical connection line through the first partial opening 105-1 or the second partial opening 105-2 can be inserted through into the housing opening 8 in order to be contacted there with the electrically conductive contact element of the protective switching device 1.
  • the term "contact element” not only designates the actual contact of the protective switching device 1, but includes all arranged in the housing opening 8, electrically conductive components, including the clamping frame and the pressure piece of the terminal of the protection device. 1
  • FIG. 5A shows the protection device 1 with the from the Figures 1A and 1B known insulation device 100, in which the insulation element 110 is integrally formed on the main body of the insulation device 100 and can be broken if necessary.
  • the protection device 1 with the off FIG. 4C known insulation device 100 in which the insulation element 110 is subsequently mounted on the main body of the insulation device 100, combines.
  • the housing opening 8 is covered so far with the aid of the insulating device 100 that a contact element arranged behind it can no longer be touched with the bare finger. In this way, effective protection against electric shock by manual contact of the live parts is feasible.

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  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Die Erfindung betrifft eine Isolationsvorrichtung zur Abdeckung eines leitenden Kontaktelements eines elektromechanischen Schutzschaltgerätes, insbesondere eines Leitungsschutzschalters, eines Fehlerstromschutzschalters oder eines Leistungsschalters. Weiterhin betrifft die Erfindung ein elektromechanisches Schutzschaltgerät, welches insbesondere als Leitungsschutzschalter, als Fehlerstromschutzschalter oder als Leistungsschalter ausgebildet ist und zumindest eine derartige Isolationsvorrichtung aufweist.The invention relates to an insulation device for covering a conductive contact element of an electro-mechanical protection switching device, in particular a circuit breaker, a residual current circuit breaker or a circuit breaker. Furthermore, the invention relates to an electromechanical protective switching device, which is designed in particular as a circuit breaker, as a residual current circuit breaker or as a circuit breaker and having at least one such isolation device.

Schutzschaltgeräte, wie beispielsweise Leistungsschalter oder Leitungsschutzschalter, werden insbesondere als Schalt- und Sicherheitselemente in elektrischen Energieversorgungsnetzen eingesetzt. Leistungsschalter sind speziell für hohe Ströme ausgelegt. Ein Leitungsschutzschalter ist eine Überstromschutzeinrichtung in der Elektroinstallation und wird insbesondere im Bereich der Niederspannungsnetze eingesetzt. Leistungsschalter und Leitungsschutzschalter garantieren ein sicheres Abschalten bei Kurzschluss und schützen Verbraucher und Anlagen vor Überlast. Sie schützen auch Leitungen vor Beschädigung durch zu starke Erwärmung in Folge eines zu hohen elektrischen Stromes.Protective switching devices, such as circuit breakers or circuit breakers are used in particular as switching and safety elements in electrical energy supply networks. Circuit breakers are specially designed for high currents. A circuit breaker is an overcurrent protection device in the electrical installation and is used in particular in the field of low-voltage networks. Circuit breakers and miniature circuit breakers guarantee a safe shutdown in the event of a short circuit and protect consumers and systems from overload. They also protect cables from damage due to excessive heating as a result of excessive electrical current.

Ein Fehlerstromschutzschalter ist eine Schutzeinrichtung zur Sicherstellung eines Schutzes gegen einen gefährlichen Fehlerstrom in einer elektrischen Anlage. Ein derartiger Fehlerstrom, welcher auch als Differenzstrom bezeichnet wird, tritt auf, wenn ein spannungsführendes Leitungsteil einen elektrischen Kontakt gegen Erde aufweist. Dies ist beispielsweise dann der Fall, wenn eine Person ein spannungsführendes Teil einer elektrischen Anlage berührt: in diesem Fall fließt der Strom als Fehlerstrom durch den Körper der betreffenden Person gegen die Erdung ab. Zum Schutz gegen derartige Körperströme muss der Fehlerstromschutzschalter bei Auftreten eines derartigen Fehlerstroms die elektrische Anlage schnell und sicher allpolig vom Leitungsnetz trennen. Im Allgemeinen Sprachgebrauch werden für einen Fehlerstromschutzschalter auch die Begriffe FI-Schutzschalter (kurz: FI-Schalter) oder RCD (für Residual Current Protective Device) gleichwertig verwendet.A residual current circuit breaker is a protective device to ensure protection against a dangerous fault current in an electrical system. Such a fault current, which is also referred to as differential current, occurs when a live line part has an electrical contact with earth. This is for example the case when a person touches a live part of an electrical system: in this case, the current flows as a fault current through the body of the person concerned against the ground. To protect against such body currents of the residual current circuit breaker must occur when such a fault current, the electrical system quickly and safely disconnect all poles from the mains. In general parlance, the terms residual current circuit breaker (RCD) or RCD (Residual Current Protective Device) are also used equivalently.

Schutzschaltgeräte wie Leistungsschalter, Leitungsschutzschalter oder Fehlerstromschutzschalter sind dazu ausgebildet, den Stromkreis im Falle eines Kurzschlusses, bei Überlast oder bei Auftreten eines Fehlerstromes selbsttätig abzuschalten und somit vom Leitungsnetz zu trennen. Sie weisen hierzu ein Schaltkontaktpaar mit einem feststehenden Schaltkontakt sowie einem relativ dazu bewegbaren Schaltkontakt auf, welches bei Bedarf geöffnet wird, um den Stromfluss zu unterbrechen. Zur elektrischen Kontaktierung mit einem oder mehreren externen Anschlussleitern weisen diese Geräte eine oder entsprechend mehrere Anschlussklemmen auf, in die der Anschlussleiter einsteckbar ist. Durch Betätigen einer entsprechenden Klemmschraube kann der Anschlussleiter sicher geklemmt werden, so dass das Schutzschaltgerät mit dem elektrischen Anschlussleiter sicher verbunden ist.Circuit-breakers such as circuit breakers, miniature circuit breakers or residual current circuit breakers are designed to switch off the circuit automatically in the event of a short circuit, overload or fault current, thus disconnecting it from the mains. For this purpose, they have a switching contact pair with a stationary switching contact and a switching contact which can be moved relative thereto, which is opened when necessary in order to interrupt the flow of current. For electrical contacting with one or more external connection conductors, these devices have one or a plurality of connection terminals into which the connection conductor can be inserted. By pressing a corresponding clamping screw, the connection conductor can be securely clamped, so that the protective switching device is securely connected to the electrical connection conductor.

Bei der elektrischen Ausrüstung von Gebäuden wird zumeist eine Vielzahl von Schutzschaltgeräten benötigt, welche in einem sogenannten Elektroinstallationsverteiler, auch als Verteilerkasten oder kurz als Verteiler bezeichnet, zusammengefasst und nebeneinander angeordnet sind. Bei der Ausrüstung eines solchen Verteilerkastens müssen zum Teil national unterschiedliche Sicherheitsvorschriften beachtet und eingehalten werden. Um die Anforderungen hinsichtlich der einzuhaltenden Luft- und Kriechstrecken zu erfüllen, ist es in manchen Ländern notwendig, die in einem Verteilerkasten nebeneinander angeordneten Schutzschaltgeräte im Bereich ihrer elektrischen Anschlüsse voneinander abzuschotten, d.h. elektrisch voneinander zu isolieren. Dies ist insbesondere bei schmalen Gehäusebauformen der Schutzschaltgeräte der Fall, da hier die elektrischen Anschlüsse der einzelnen Schutzschaltgeräte nahe beieinander liegen. Die Druckschrift JP2010027334A offenbart ein elektrisches Schaltgerät, welches mehrere, nebeneinander angeordnete elektrische Anschlüsse aufweist, die mittels an einem Gehäuse des Schaltgeräts befestigbarer Trennwände gegeneinander isoliert werden können.In the electrical equipment of buildings usually a variety of protection devices is needed, which in a so-called electrical distribution manifold, also referred to as distribution box or short as a distributor, summarized and arranged side by side. When equipping such a distribution box, sometimes different national safety regulations must be observed and adhered to. In order to meet the requirements with regard to the clearances and creepage distances to be complied with, in some countries it is necessary to partition off the protective switching devices arranged side by side in a distribution box in the region of their electrical connections, ie electrically from one another to isolate. This is the case in particular with narrow housing designs of the protective switching devices, since here the electrical connections of the individual protective switching devices are close to each other. The publication JP2010027334A discloses an electrical switching device having a plurality of juxtaposed electrical connections, which can be isolated by means of attachable to a housing of the switching device partitions against each other.

An elektrischen Schutzschaltgeräten werden Leitungen durch Klemmen, in der Regel durch Schraubklemmen, befestigt. Dazu weist das Isolierstoffgehäuse des Schutzschaltgerätes Öffnungen auf, hinter denen sich die Klemmen befinden. Um auch Leiter größeren Querschnitts klemmen zu können, lässt es sich nicht vermeiden, die Klemme und damit die Öffnung des Schutzschaltgerätes so groß zu dimensionieren, dass innenliegende Metallteile mit dem Finger berührt werden können, wodurch die betreffende Person einen elektrischen Schlag erleiden kann. Diese Gefahr ist besonders dann gegeben, wenn Leiter mit einem weit kleineren Querschnitt als dem maximal möglichen Querschnitt an das Schutzschaltgerät angeklemmt sind: in diesem Fall ist ein großer Teil des Klemmenquerschnitts durch ein leitendes Element, beispielsweise eine Klemmschraube oder ein Klemmendruckstück, geschlossen. Diese Klemmschraube oder das Klemmendruckstück liegt dabei unmittelbar hinter der Gehäuseöffnung und kann dabei von einem Installateur oder Anwender mit dem Finger berührt werden, wenn dieser z.B. weitere Geräte in der Verteilung montiert, demontiert oder Anschlussleiter an- oder abklemmt.On electrical protective switching devices, cables are fixed by terminals, usually by screw terminals. For this purpose, the insulating material of the protective device on openings, behind which are the terminals. In order to clamp even conductors larger cross-section, it is unavoidable to dimension the terminal and thus the opening of the circuit breaker so large that internal metal parts can be touched with the finger, causing the person concerned can suffer an electric shock. This danger is particularly present when conductors are clamped with a much smaller cross-section than the maximum possible cross-section of the circuit breaker: in this case, a large part of the terminal cross-section by a conductive element, such as a clamping screw or a clamping pressure piece, closed. This clamping screw or the clamping pressure piece lies directly behind the housing opening and can be touched by a plumber or user with his finger, if this example. other devices are mounted in the distribution, dismantled or connected or disconnected.

Aus der JP 2012 079586 A ist ein Schutzschaltgerät mit einer Isolationsvorrichtung bekannt, welche zum Abdecken der Öffnung ein flexibles sowie wegbiegbares Isolationselement aufweist. Die EP 1 069 578 A1 offenbart ein Schutzschaltgerät mit einer Isolationsvorrichtung, welche durch Abtrennen von Querstegen an unterschiedliche Leiterquerschnitte anpassbar ist.From the JP 2012 079586 A a protective switching device with an insulation device is known, which has a flexible and wegbiegbares insulation element for covering the opening. The EP 1 069 578 A1 discloses a protective switching device with an insulation device, which is adaptable by separating transverse webs to different conductor cross-sections.

Es ist deshalb die Aufgabe der vorliegenden Erfindung, eine Isolationsvorrichtung für ein Schutzschaltgerät, insbesondere für einen Leitungsschutzschalter, einen Fehlerstromschutzschalter oder einen Leistungsschalter, zur elektrischen Isolierung des Schutzschaltgerätes im Bereich seiner elektrischen Anschlussklemme, sowie ein Schutzschaltgerät mit einer derartigen Isolationsvorrichtung bereitzustellen, welche
ei-nen sicheren Schutz vor elektrischem Schlag gewährleisten und gleichzeitig eine einfache Bedienbarkeit beim Anschließen eines elektrischen Anschlussleiters ermöglichen.
It is therefore the object of the present invention to provide an insulation device for a protective switching device, in particular for a circuit breaker, a residual current circuit breaker or a circuit breaker, for electrical insulation of the protective device in the region of its electrical terminal, and a protective switching device with such an isolation device, which
ei-nen ensure safe protection against electrical shock and at the same time allow easy operation when connecting an electrical connection conductor.

Diese Aufgabe wird durch das elektromechanische Schutzschaltgerät gemäß dem unabhängigen Anspruch gelöst. Vorteilhafte Ausgestaltungen sind Gegenstand der abhängigen Ansprüche.This object is achieved by the electro-mechanical protection device according to the independent claim. Advantageous embodiments are the subject of the dependent claims.

Die erfindungsgemäße Isolationsvorrichtung ist zur Abdeckung eines leitenden Kontaktelements eines elektromechanischen Schutzschaltgerätes, insbesondere eines Leitungsschutzschalters, eines Fehlerstromschutzschalters oder eines Leistungsschalters, vorgesehen, wobei das leitende Kontaktelement hinter einer Gehäuseöffnung des Schutzschaltgerätes angeordnet ist. Die Isolationsvorrichtung weist hierzu einen Grundkörper auf, welcher an einem Gehäuse des Schutzschaltgerätes befestigbar ist und eine Öffnung zum Hindurchführen zumindest einer elektrischen Anschlussleitung aufweist, um diese mit dem Kontaktelement des Schutzschaltgerätes zu kontaktieren. Die Isolationsvorrichtung weist ferner ein Isolationselement auf, welches im Bereich der Öffnung fest aber lösbar mit dem Grundkörper verbunden ist. Die Öffnung weist ihrerseits einen Öffnungsquerschnitt auf, welcher mit Hilfe des Isolationselements an einen Leitungsquerschnitt der elektrischen Anschlussleitung derart anpassbar ist, dass im montierten Zustand der Isolationsvorrichtung am Schutzschaltgerät eine manuelle Berührung des Kontaktelements ausgeschlossen ist.The insulation device according to the invention is provided to cover a conductive contact element of an electro-mechanical protection device, in particular a circuit breaker, a residual current circuit breaker or a circuit breaker, wherein the conductive contact element is arranged behind a housing opening of the protective device. For this purpose, the insulation device has a main body, which can be fastened to a housing of the protective switching device and has an opening for passing at least one electrical connection line in order to contact the latter with the contact element of the protective switching device. The insulation device furthermore has an insulation element which is firmly but detachably connected to the base body in the region of the opening. The opening, in turn, has an opening cross-section which can be adapted to a line cross-section of the electrical connection line with the aid of the insulation element in such a way that manual contact of the contact element is excluded in the installed state of the insulation device on the protection switching device.

Die Isolationsvorrichtung kann, falls nationale Sicherheitsanforderungen - beispielsweise hinsichtlich der einzuhaltenden Luft- und Kriechstrecken - dies erfordern, an einem Schutzschaltgerät im Bereich der elektrischen Anschlussklemme befestigt werden. Dabei wird die Öffnung der Isolationsvorrichtung, durch die die elektrische Anschlussleitung hindurchgeführt werden muss, um mit dem Kontaktelement des Schutzschaltgerätes elektrisch leitend verbunden zu werden, durch das Isolationselement derart verkleinert, dass eine manuelle Berührung des dahinter angeordneten Kontaktelements nicht mehr möglich ist. Der Begriff "Kontaktelement" umfasst dabei alle elektrisch leitenden Bauteile im Anschlussbereich des Schutzschaltgerätes, beispielsweise den Klemmrahmen oder das Druckstück der Anschlussklemme, aber auch den Kontakt selbst. Unter dem Begriff "manuelle Berührung" wird dabei eine Berührung des elektrisch leitenden Kontaktelements durch eine Person mit deren Fingern durch die Öffnung des Isolationselements hindurch verstanden. Ein ungewolltes Berühren eines Kontaktelements, beispielsweise der Anschlussklemme, des Druckstücks oder des Kontakts, wird somit wirksam unterbunden, so dass mit Hilfe der Isolationsvorrichtung ein sicherer Schutz vor elektrischem Schlag realisierbar ist.The insulation device, if national safety requirements - for example, with regard to the creepage distances and creepage distances to be complied with - require this, be attached to a protective switching device in the region of the electrical connection terminal. In this case, the opening of the insulation device, through which the electrical connection line must be passed, in order to be electrically conductively connected to the contact element of the protective switching device, reduced by the isolation element such that a manual contact of the behind arranged contact element is no longer possible. The term "contact element" encompasses all electrically conductive components in the connection region of the protective switching device, for example, the clamping frame or the pressure piece of the terminal, but also the contact itself. Under the term "manual contact" is a touch of the electrically conductive contact element by a person with understood their fingers through the opening of the insulating member. Unintentional contact with a contact element, for example, the terminal, the pressure piece or the contact, is thus effectively prevented, so that with the help of the isolation device, a secure protection against electric shock can be realized.

Die Anpassung des Öffnungsquerschnitts an den Querschnitt der Anschlussleitung mithilfe des Isolationselements wird dadurch erreicht, dass das Isolationselement den Öffnungsquerschnitt teilweise verdeckt. Die Anpassung des Öffnungsquerschnitts kann dabei sowohl durch eine Montage als auch durch eine Demontage des Isolationselements erfolgen: Im Fall einer Montage des Isolationselements am Grundkörper der Isolationsvorrichtung wird der Öffnungsquerschnitt verkleinert, wodurch eine Anpassung an eine Anschlussleitung mit kleinem Leitungsquerschnitt realisierbar ist. Im Falle einer Demontage, d.h. eines Entfernens des Isolationselements vom Grundkörper wird der Öffnungsquerschnitt entsprechend vergrößert, wodurch eine Anpassung an eine Anschlussleitung mit großen Leitungsquerschnitt erreicht wird. Auf diese Weise ist im Bereich der Anschlussklemmen des Schutzschaltgerätes mit Hilfe der Isolationsvorrichtung ein einfacher und kostengünstiger Berührungsschutz der Schutzart IP20 auch für unterschiedliche Leitungsquerschnitte realisierbar. Erfindungsgemäß sind unterschiedlich dimensionierte Isolationselemente mit dem Grundkörper kombinierbar, wodurch der Öffnungsquerschnitt an unterschiedliche Leitungsquerschnitte anpassbar ist. Durch die Verwendung unterschiedlich dimensionierter Isolationselemente, welche unterschiedlich groß sind, aber auf dieselbe Art und Weise am Grundkörper der Isolationsvorrichtung montiert werden, wird eine hohe Flexibilität hinsichtlich der Anpassung der Querschnittsöffnung an unterschiedlich dimensionierte Anschlussleitungen, und damit an unterschiedliche Leitungsquerschnitte, erreicht.The adaptation of the opening cross section to the cross section of the connecting line by means of the insulating element is achieved in that the insulating element partially covers the opening cross section. The adjustment of the opening cross-section can be done both by an assembly and by disassembly of the insulation element: In the case of mounting the insulation element on the main body of the insulation device, the opening cross-section is reduced, whereby an adaptation to a connecting line with a small cross-section can be realized. In the case of dismantling, ie removal of the insulating element from the base body of the opening cross-section is increased accordingly, whereby an adaptation to a connecting cable is achieved with a large cross-section. In this way, in the field of terminals of the protective switching device with the help of the insulation device, a simple and cost-effective protection against contact of the degree of protection IP20 can also be realized for different cable cross-sections. According to the invention differently dimensioned insulation elements can be combined with the base body, whereby the opening cross-section is adaptable to different cable cross sections. By using different sized insulation elements, which are different in size, but are mounted in the same way on the main body of the insulation device, a high flexibility in terms of adaptation of the cross-sectional opening to differently sized connecting lines, and thus to different cable cross-sections, achieved.

In einer weiteren vorteilhaften Weiterbildung der Isolationsvorrichtung ist das Isolationselement durch Einstecken oder Clipsen mit dem Grundkörper verbindbar. Sowohl das Einstecken als auch das Einclipsen des Isolationselements am Grundkörper der Isolationsvorrichtung stellt eine einfache und kostengünstige Montagearte zur Befestigung des Isolationselements am Grundkörper dar.In a further advantageous development of the isolation device, the insulation element can be connected to the base body by inserting or clipping. Both the insertion and the clipping of the insulation element on the base body of the insulation device is a simple and inexpensive way to mount the insulation element to the base body.

In einer weiteren vorteilhaften Weiterbildung der Isolationsvorrichtung ist das Isolationselement einstückig aber lösbar mit dem Grundkörper verbunden. Durch die einstückige Ausführungsform ist eine zeitaufwändige Montage des Isolationselements am Grundkörper entbehrlich, weswegen die Isolationsvorrichtung vergleichsweise kostengünstig herstellbar ist.In a further advantageous embodiment of the isolation device, the insulation element is integrally but detachably connected to the base body. Due to the one-piece embodiment, a time-consuming installation of the insulating element on the main body is unnecessary, which is why the isolation device is relatively inexpensive to produce.

In einer weiteren vorteilhaften Weiterbildung ist die Isolationsvorrichtung auf das Schutzschaltgerät aufsteckbar oder aufschiebbar ausgebildet. Ein Aufstecken oder Aufschieben der Isolationsvorrichtung auf das Schutzschaltgerät ermöglicht eine einfach durchzuführende Montage der Isolationsvorrichtung, insbesondere beim Nachrüsten bestehender Elektroinstallationen. Der Montageaufwand wird dadurch deutlich reduziert.In a further advantageous embodiment, the isolation device is designed plugged or pushed onto the protective switching device. A plugging or pushing the isolation device on the circuit breaker allows easy to perform mounting the insulation device, especially when retrofitting existing electrical installations. The assembly effort is significantly reduced.

In einer weiteren vorteilhaften Weiterbildung der Isolationsvorrichtung ist der Grundkörper im Wesentlichen u-förmig ausgebildet, wobei ein erster Schenkel des u-förmigen Grundkörpers von einer ersten Trennwand und ein zweiter Schenkel des u-förmigen Grundkörpers von einer zweiten Trennwand gebildet sind. Der erste und der zweite Schenkel dienen dazu, das Schutzschaltgerät im Bereich seiner elektrischen Anschlussklemme gegen ein benachbart angeordnetes Schutzschaltgerät, beispielsweise in einem Verteilerkasten, elektrisch zu isolieren. Bei der Anordnung in einem Verteilerkasten können die elektrischen Anschlüsse benachbarter Schutzschaltgeräte nahe beieinander liegen, so dass die vorgeschriebenen Luft- und Kriechstrecken ohne eine zusätzliche Isolierung der Anschlüsse nicht eingehalten werden können. Die erste bzw. die zweite Trennwand, welche zwischen den elektrischen Anschlüssen zueinander benachbart angeordneter Schutzschaltgeräte angeordnet sind, stellt eine derartige Isolierung dar. Über eine Basis des u-förmigen Grundkörpers, welche die beiden Schenkel miteinander verbindet, ist die Isolationsvorrichtung an dem Schutzschaltgerät befestigbar.In a further advantageous embodiment of the isolation device, the main body is substantially U-shaped, wherein a first leg of the U-shaped main body of a first partition and a second leg of the U-shaped base body formed by a second partition are. The first and the second leg serve to electrically isolate the protective switching device in the region of its electrical terminal against a neighboring arranged protective switching device, for example in a distribution box. When arranged in a distribution box, the electrical connections of adjacent protection devices can be close to each other, so that the prescribed clearances and creepage distances can not be met without additional insulation of the connections. The first and the second partition wall, which are arranged between the electrical terminals adjacent to each other arranged protective switching devices, represents such insulation. About a base of the U-shaped body, which connects the two legs together, the insulation device to the protection device can be fastened.

In einer weiteren vorteilhaften Weiterbildung der Isolationsvorrichtung entspricht der äußere Abstand der ersten Trennwand zur zweiten Trennwand im Wesentlichen einer Breite des Schutzschaltgerätes. Damit schließt die Isolationsvorrichtung im Wesentlichen bündig mit den Breitseiten, welche die Breite des Schutzschaltgerätes definieren, ab. Auf diese Weise sind mehrere mit einer Isolationsvorrichtung ausgerüsteter Schutzschaltgeräte ohne zusätzlichen Platzbedarf in einer Reihe nebeneinander anordenbar, beispielsweise in einem Verteilerkasten.In a further advantageous embodiment of the isolation device, the outer distance of the first partition to the second partition substantially corresponds to a width of the protective switching device. Thus, the insulation device is substantially flush with the broad sides, which define the width of the protective device, from. In this way, several equipped with an isolation device protection devices without additional space in a row next to each other can be arranged, for example in a distribution box.

In einer weiteren vorteilhaften Weiterbildung ist die Isolationsvorrichtung durch Kunststoff-Spritzgießen herstellbar. Das Kunststoff-Spritzgießen stellt im Bereich der Massenfertigung ein äußerst kostengünstiges Herstellungsverfahren dar. Vorliegend kann auch das Isolationselement über einen oder mehrere Anguss-Stege an den Grundkörper der Isolationsvorrichtung angespritzt werden. Das Isolationselement deckt dann bereits einen Teil des Öffnungsquerschnitts ab. Zur Anpassung an eine Anschlussleitung mit großem Leitungsquerschnitt wird das Isolationselement durch Trennen der Anguss-Stege herausgetrennt, wodurch der Öffnungsquerschnitt entsprechend vergrößert wird.In a further advantageous development, the isolation device can be produced by plastic injection molding. In the field of mass production, plastic injection molding represents an extremely cost-effective production method. In the present case, it is also possible for the insulating element to be injection-molded onto the main body of the insulation device via one or more sprue webs. The insulation element then already covers part of the opening cross-section. To adapt to a connecting cable with a large cable cross section, the insulating element is separated by separating the sprue webs, whereby the opening cross-section is increased accordingly.

Das erfindungsgemäße elektromechanische Schutzschaltgerät, welches insbesondere als Leitungsschutzschalter, als Fehlerstromschutzschalter oder als Leistungsschalter ausgebildet ist, weist zumindest eine Isolationsvorrichtung der vorstehend beschriebenen Art auf. Hinsichtlich der Vorteile des elektromechanischen Schutzschaltgerätes wird auf die vorstehenden Ausführungen zu den Vorteilen der erfindungsgemäßen Isolationsvorrichtung verwiesen.The electromechanical protective switching device according to the invention, which is designed in particular as a circuit breaker, as a residual current circuit breaker or as a circuit breaker, has at least one insulation device of the type described above. With regard to the advantages of the electromechanical protective switching device, reference is made to the above statements on the advantages of the insulation device according to the invention.

In einer vorteilhaften Weiterbildung ist das Schutzschaltgerät in einem Sammelschienenverbund angeordnet, wobei die Isolationsvorrichtung zur elektrischen Isolierung des Schutzschaltgerätes gegenüber zumindest einem benachbart angeordneten Schutzschaltgerät dient. Gerade bei einer Anordnung im Sammelschienenverbund, bei der eine Vielzahl von Schutzschaltgeräten nebeneinander angeordnet sind, ist eine auf einfache Art und Weise zu realisierende Nachrüstung der einzelnen Schutzschaltgeräte mit den erfindungsgemäßen Isolationsvorrichtungen besonders vorteilhaft.In an advantageous development, the protective switching device is arranged in a busbar network, wherein the insulation device for electrically insulating the protective switching device against at least one adjacent arranged protective switching device is used. Especially with an arrangement in the busbar assembly, in which a plurality of protective switching devices are arranged side by side, a simple way to implement retrofitting the individual protective switching devices with the insulation devices according to the invention is particularly advantageous.

Im Folgenden werden mehrere Ausführungsbeispiele der Isolationsvorrichtung sowie des Schutzschaltgerätes unter Bezug auf die beigefügten Figuren näher erläutert. In den Figuren sind:In the following, several embodiments of the isolation device and the protective switching device will be explained in more detail with reference to the accompanying figures. In the figures are:

Figurencharacters

1A und 1B1A and 1B
schematische Darstellungen eines ersten Ausführungsbeispiels der erfindungsgemäßen Isolationsvorrichtung;schematic representations of a first embodiment of the insulation device according to the invention;
Figuren 2A und 2BFIGS. 2A and 2B
schematische Darstellungen einer Variante des ersten Ausführungsbeispiels der erfindungsgemäßen Isolationsvorrichtung;schematic representations of a variant of the first embodiment of the insulation device according to the invention;
Figuren 3A und 3BFIGS. 3A and 3B
schematische Darstellungen eines zweiten Ausführungsbeispiels der erfindungsgemäßen Isolationsvorrichtung;schematic representations of a second embodiment of the insulation device according to the invention;
Figuren 4A bis 4CFIGS. 4A to 4C
schematische Darstellungen möglicher Varianten des zweiten Ausführungsbeispiels der erfindungsgemäßen Isolationsvorrichtung.schematic representations of possible variants of the second embodiment of the insulation device according to the invention.
Figuren 5A und 5BFIGS. 5A and 5B
schematisierte, perspektivische Darstellungen des erfindungsgemäßen elektromechanischen Schutzschaltgerätes mit daran befestigter Isolationsvorrichtung;schematic, perspective views of the inventive electro-mechanical protection device with attached insulation device;

In den verschiedenen Figuren der Zeichnung sind gleiche Teile stets mit dem gleichen Bezugszeichen versehen. Die Beschreibung gilt für alle Zeichnungsfiguren, in denen das entsprechende Teil ebenfalls zu erkennen ist.In the various figures of the drawing, like parts are always provided with the same reference numerals. The description applies to all drawing figures in which the corresponding part can also be recognized.

In den Figuren 1A und 1B ist ein erstes Ausführungsbeispiel der erfindungsgemäßen Isolationsvorrichtung 100 schematisch dargestellt. Die Isolationsvorrichtung 100 weist einen Grundkörper mit einem u-förmigen Querschnitt auf, wobei ein Verbindungsbereich 103 des u-förmigen Grundkörpers eine als erster Schenkel ausgebildete erste Trennwand 101 mit einer als zweiter Schenkel ausgebildeten zweiten Trennwand 102 verbindet. In dem Verbindungsbereich 103 ist eine Öffnung 105 zum Hindurchführen einer elektrischen Anschlussleitung (nicht dargestellt) ausgebildet, um diese im montierten Zustand der Isolationsvorrichtung 100 an einem Schutzschaltgerät 1 (siehe Figuren 5A und 5B) mit einem Kontaktelement des Schutzschaltgerätes 1 elektrisch leitend zu verbinden. Als Kontaktelement kommen beispielsweise der Klemmrahmen oder das Druckstück der Anschlussklemme, aber auch den Kontakt selbst, in Betracht.In the Figures 1A and 1B a first embodiment of the isolation device 100 according to the invention is shown schematically. The insulation device 100 has a base body with a U-shaped cross section, wherein a connection region 103 of the U-shaped base body connects a first partition 101 formed as a first leg to a second partition wall 102 designed as a second leg. In the connection region 103, an opening 105 for passing an electrical connection line (not shown) is formed in order in the assembled state of the insulation device 100 to a protective switching device 1 (see FIGS. 5A and 5B ) electrically conductively connected to a contact element of the protective switching device 1. As a contact element, for example, the clamping frame or the pressure piece of the terminal, but also the contact itself, come into consideration.

Die Befestigung der Isolationsvorrichtung 100 an einem Schutzschaltgerät 1 kann beispielsweise durch Aufschieben, aber auch durch Aufstecken oder Verrasten erfolgen. Hierzu weist die Isolationsvorrichtung 100 mehrere Befestigungselemente 104 auf, welche im Bereich des Verbindungsbereichs 103 am Grundkörper der Isolationsvorrichtung 100 ausgebildet sind. Zur Versteifung des u-förmigen Grundkörpers weist die Isolationsvorrichtung 100 mehrere Versteifungsrippen 108 auf, welche von der ersten Trennwand 101 bzw. der zweiten Trennwand 102 zum Verbindungsbereich 103 hin verlaufen, um dem Grundkörper der Isolationsvorrichtung 100 eine höhere Steifigkeit zu verleihen.The attachment of the isolation device 100 to a protective device 1 can be done for example by pushing, but also by plugging or locking. For this purpose, the insulation device 100 has a plurality of fastening elements 104, which are formed in the region of the connection region 103 on the base body of the insulation device 100. For stiffening the U-shaped main body, the insulating device 100 has a plurality of stiffening ribs 108, which extend from the first partition wall 101 and the second partition wall 102 toward the connection region 103 in order to give the main body of the insulation device 100 a higher rigidity.

Ferner weist die Isolationsvorrichtung 100 ein Isolationselement 110 in Form eines Plättchens auf, welches in diesem ersten Ausführungsbeispiel über zwei Anguss-Stege 111 derart mit dem Grundkörper der Isolationsvorrichtung 100 verbunden ist, dass es einen Teil der Öffnung 105 verdeckt. Im dargestellten Zustand ist die Isolationsvorrichtung 100 damit zum Hindurchführen einer elektrischen Anschlussleitung mit kleinem Leitungsquerschnitt vorgesehen. Für den Fall, dass eine elektrische Anschlussleitung mit großem Leitungsquerschnitt durch die Öffnung 105 hindurchgeführt werden soll, um mit dem Kontaktelement des Schutzschaltgerätes 1 elektrisch leitend verbunden zu werden, kann das Isolationselement 110 durch Drehung um eine durch die Anguss-Stege 111 definierte Achse vom Grundkörper getrennt werden, um den Öffnungsquerschnitt der Öffnung 105 entsprechend zu vergrößern. Das Isolationselement 110 ist somit einstückig - und damit fest - aber lösbar mit dem Grundkörper der Isolationsvorrichtung 100 verbunden. Auf diese Weise kann die Isolationsvorrichtung 100 an verschiedene elektrische Anschlussleitungen mit unterschiedlichem Leitungsquerschnitt schnell und einfach angepasst werden.Furthermore, the insulation device 100 has an insulation element 110 in the form of a small plate, which in this first exemplary embodiment is connected to the main body of the insulation device 100 via two sprue webs 111 in such a way that it covers part of the opening 105. In the illustrated state, the insulation device 100 is thus provided for passing an electrical connection line with a small line cross-section. In the event that an electrical connection line with a large cross section through the opening 105 is to be passed in order to be electrically conductively connected to the contact element of the protective switching device 1, the insulating element 110 by rotation about a defined by the sprue webs 111 axis of the main body be separated to increase the opening cross section of the opening 105 accordingly. The insulating element 110 is thus integrally connected - and thus fixed - but releasably connected to the main body of the insulation device 100. In this way, the isolation device 100 can be quickly and easily adapted to different electrical connection lines with different conductor cross-section.

Die Figuren 2A und 2B zeigen schematisch eine Variante des ersten Ausführungsbeispiels der erfindungsgemäßen Isolationsvorrichtung 100. Dabei weist die Isolationsvorrichtung 100 ferner einen Steg 107 auf, welcher von der ersten Trennwand 101 zur zweiten Trennwand 102 verläuft und dabei die Öffnung 105 in eine erste Teilöffnung 105-1 sowie eine zweite Teilöffnung 105-2 unterteilt. Die beiden Teilöffnungen 105-1 und 105-2 sind dabei jede für sich zu klein dimensioniert, als dass ein Hindurchgreifen mit den Fingern möglich wäre. Eine Berührung eines hinter der montierten Isolationsvorrichtung 100 angeordneten Kontaktelements wird damit wirksam unterbunden.The FIGS. 2A and 2B schematically show a variant of the first embodiment of the insulation device 100 according to the invention. In this case, the isolation device 100 Further, a web 107 which extends from the first partition wall 101 to the second partition wall 102 and thereby divides the opening 105 into a first partial opening 105-1 and a second partial opening 105-2. The two partial openings 105-1 and 105-2 are each dimensioned too small for themselves to be able to pass through with their fingers. A contact of a mounted behind the mounted insulation device 100 contact element is thus effectively prevented.

Die untere, erste Teilöffnung 105-1 ist dabei zum Hindurchführen einer Sammelschiene oder eines Einspeiseelements vorgesehen, während die obere, zweite Teilöffnung 105-2 zum Hindurchführen der elektrischen Anschlussleitung dient. Der Öffnungsquerschnitt der oberen, zweiten Teilöffnung 105-2 ist dabei wiederum durch das Isolationselement 110 teilweise abgedeckt. Das Isolationselement 110 ist dabei wiederum über zwei Anguss-Stege 111 mit dem Grundkörper verbunden. Zur Anpassung der zweiten Teilöffnung 105-2 an den Leitungsquerschnitt der elektrischen Anschlussleitung kann der Öffnungsquerschnitt der zweiten Teilöffnung 105-2 durch Heraustrennen des Isolationselements 110 vergrößert werden.The lower, first partial opening 105-1 is provided for passing a busbar or a feed element, while the upper, second partial opening 105-2 is used for passing the electrical connection line. The opening cross section of the upper, second partial opening 105-2 is in turn partially covered by the insulation element 110. The insulation element 110 is in turn connected via two sprue webs 111 to the base body. To adapt the second partial opening 105-2 to the line cross section of the electrical connection line, the opening cross section of the second partial opening 105-2 can be increased by separating out the insulation element 110.

In den Figuren 3A und 3B ist ein zweites Ausführungsbeispiel der erfindungsgemäßen Isolationsvorrichtung 100 schematisch dargestellt. Bei diesem zweiten Ausführungsbeispiel ist das Isolationselement 110, welches wiederum die Form eines Plättchens aufweist, nicht an den Grundkörper der Isolationsvorrichtung 100 angeformt, sondern stellt ein eigenständiges Bauteil dar, das mittels einer entsprechenden Halteeinrichtung am Grundkörper der Isolationsvorrichtung 100 befestigbar ist. Der Grundkörper weist hierzu an den zueinander orientierten Innenseiten der beiden Trennwände 101 und 102 mehrere Halteelemente 109 auf. Das Isolationselement 110 kann dabei von oben in den Grundkörper der Isolationsvorrichtung 100 eingesteckt werden, um mittels der Halteelemente 109 in dieser Position fixiert zu werden, beispielsweise durch Verrasten mittels einer geeigneten Rastverbindung. Es wäre jedoch ebenso möglich, das Isolationselement 110 mittels einer Clips-Verbindung durch ein Eindrücken von vorne am Grundkörper der Isolationsvorrichtung 100 zu befestigen. In beiden Fällen ist das Isolationselement 110 fest aber lösbar mit dem Grundkörper der Isolationsvorrichtung 100 verbunden.In the FIGS. 3A and 3B a second embodiment of the isolation device 100 according to the invention is shown schematically. In this second exemplary embodiment, the insulation element 110, which again has the shape of a small plate, is not formed on the main body of the insulation device 100, but represents an independent component which can be fastened to the base body of the insulation device 100 by means of a corresponding holding device. For this purpose, the base body has a plurality of retaining elements 109 on the inner sides of the two partition walls 101 and 102 oriented toward one another. The insulation element 110 can be inserted from above into the main body of the insulation device 100 in order to be fixed in this position by means of the retaining elements 109, for example by latching by means of a suitable latching connection. However, it would also be possible to fasten the insulation element 110 by means of a clip connection by pressing in from the front on the main body of the insulation device 100. In both cases, the insulation element 110 is firmly but detachably connected to the main body of the insulation device 100.

Durch den Steg 107 wird die Öffnung 105 wiederum in die erste Teilöffnung 105-1 sowie die zweite Teilöffnung 105-2 unterteilt. Wie bereits bei dem in den Figuren 2A und 2B dargestellten Ausführungsbeispiel wird die zweite Teilöffnung 105-2 durch das Isolationselement 110 wiederum teilweise abgedeckt, wodurch der Öffnungsquerschnitt der zweiten Teilöffnung 105-2 durch Einsetzen oder Herausnehmen des Isolationselements 110 an den jeweiligen Leitungsquerschnitt der elektrischen Anschlussleitung angepasst werden kann.Through the web 107, the opening 105 is again divided into the first partial opening 105-1 and the second partial opening 105-2. As already in the in the FIGS. 2A and 2B illustrated embodiment, the second partial opening 105-2 is again partially covered by the insulating member 110, whereby the opening cross section of the second partial opening 105-2 can be adjusted by insertion or removal of the insulating member 110 to the respective line cross section of the electrical connection line.

Die Figuren 4A bis 4C zeigen schematische Darstellungen möglicher Varianten des zweiten Ausführungsbeispiels der erfindungsgemäßen Isolationsvorrichtung 100. Diese Varianten weisen alle denselben Grundkörper auf, bei dem das Isolationselement 110 wiederum mittels der Halteelemente 109 am Grundkörper der Isolationsvorrichtung 100 befestigbar ist. Diese Befestigung kann dabei sowohl über eine Steckverbindung durch Einstecken "von oben" als auch über eine Clips-Verbindung durch Eindrücken "von vorne" realisiert sein. Die dargestellten Isolationsvorrichtungen 100 unterscheiden sich jedoch hinsichtlich der verwendeten Isolationselemente 110: diese sind unterschiedlich dimensioniert, so dass durch eine geeignete Wahl des entsprechenden Isolationselements 110 eine einfache Anpassung an den Leitungsquerschnitt des jeweils verwendeten elektrischen Anschlussleiters realisierbar ist. Auf diese Weise ist eine einfache und äußerst kostengünstige Variantenbildung realisierbar.The FIGS. 4A to 4C show schematic representations of possible variants of the second embodiment of the insulation device 100 according to the invention. These variants all have the same base body, in which the insulation element 110 in turn by means of the holding elements 109 on the main body of the insulation device 100 can be fastened. This attachment can be realized both via a plug-in connection by inserting "from above" as well as a clip connection by pressing "from the front". However, the insulation devices 100 shown differ in terms of the insulation elements 110 used: these are dimensioned differently, so that by a suitable choice of the corresponding insulation element 110, a simple adaptation to the line cross section of each electrical connection conductor used can be realized. In this way, a simple and extremely cost variant formation can be realized.

Bezüglich der in Figur 4C dargestellten Variante sei darauf hingewiesen, dass diese prinzipiell ebenfalls einen Steg 107 aufweist, welcher in der Darstellung der Figur 4C durch das Isolationselement 110 verdeckt ist. Es ist jedoch prinzipiell ebenso möglich, den Grundkörper der in den Figuren 4A bis 4C gezeigten Varianten auch ohne einen entsprechenden Steg auszuführen - ähnlich dem Grundkörper des in den Figuren 1A und 1B dargestellten ersten Ausführungsbeispiels.Regarding the in FIG. 4C illustrated variant, it should be noted that these in principle also a web 107th which, in the illustration of the FIG. 4C is covered by the insulation element 110. However, it is also possible in principle, the main body in the FIGS. 4A to 4C shown variants without a corresponding web run - similar to the main body of the in the Figures 1A and 1B illustrated first embodiment.

Ferner sei angemerkt, dass die Isolationsvorrichtung 100 sowie das Isolationselement 110 definitionsgemäß aus einem isolierenden Material - bevorzugt aus einem thermoplastischen oder duroplastischen Kunststoff - gebildet sind. Insbesondere thermoplastische Kunststoffe sind - vor allem bei großen Stückzahlen, wie sie in der industriellen Massenfertigung vorkommenden - mittels des Kunststoff-Spritzguss-Verfahrens äußerst kostengünstig herstellbar, insbesondere, wenn dabei auch der Steg 107 und/oder das Isolationselement 110 an den Grundkörper des Isolationsvorrichtung 100 angeformt werden.It should also be noted that the insulation device 100 and the insulation element 110 are by definition made of an insulating material, preferably of a thermoplastic or thermosetting plastic. In particular, thermoplastics are - especially in large quantities, as occurring in industrial mass production - produced extremely inexpensively by means of plastic injection molding process, in particular, while also the web 107 and / or the insulating member 110 to the main body of the insulating device 100th be formed.

Die Figuren 5A und 5B zeigen schematisierte, perspektivische Darstellungen des erfindungsgemäßen elektromechanischen Schutzschaltgerätes 1 mit einer daran befestigten Isolationsvorrichtung 100. Das Schutzschaltgerät 1 weist ein Gehäuse 2 auf. An einer Frontseite 4 des Gehäuses 2 ist ein Betätigungselement 3 zum manuellen Betätigen des Schutzschaltgerätes 1 angeordnet. Der Frontseite 4 gegenüberliegend befindet sich eine Befestigungsseite 5, an der Befestigungsmittel 9 zur Befestigung des Gehäuses 2 an einer sogenannten Trag- oder Hutschiene (nicht dargestellt) vorgesehen sind. Neben der Frontseite 4 und der Befestigungsseite 5 weist das Gehäuse 2 des Schutzschaltgerätes 1 noch die Front- und die Befestigungsseite 4 und 5 miteinander verbindende Schmal- und Breitseiten 6 und 7 auf. An seinen Schmalseiten 6 weist das Gehäuse 2 jeweils eine Gehäuseöffnung 8 zum Einführen einer elektrischen Anschlussleitung (nicht dargestellt) auf, um diese mit dem innenliegenden Kontaktelement des Schutzschaltgerätes 1 elektrisch leitend zu verbinden.The FIGS. 5A and 5B show schematic, perspective views of the inventive electro-mechanical protection device 1 with an attached isolation device 100. The protective switching device 1 has a housing 2. On a front side 4 of the housing 2, an actuating element 3 for manual actuation of the protective switching device 1 is arranged. The front side 4 opposite is a mounting side 5, are provided on the fastening means 9 for fixing the housing 2 to a so-called support or DIN rail (not shown). In addition to the front side 4 and the fastening side 5, the housing 2 of the protective switching device 1 still the front and the mounting side 4 and 5 interconnecting narrow and broad sides 6 and 7. At its narrow sides 6, the housing 2 in each case has a housing opening 8 for insertion of an electrical connecting line (not shown), in order to electrically connect these to the inner contact element of the protective switching device 1.

Im Bereich der beiden Schmalseiten 6 ist jeweils eine Isolationsvorrichtung 100 am Gehäuse 2 des Schutzschaltgerätes 1 befestigt. In dem dargestellten, montierten Zustand der Isolationsvorrichtung 100 an dem Gehäuse 2 befinden sich die erste Teilöffnung 105-1 sowie die zweite Teilöffnung 105-2 im Bereich der Gehäuseöffnung 8, so dass eine elektrische Anschlussleitung durch die erste Teilöffnung 105-1 oder die zweite Teilöffnung 105-2 hindurch in die Gehäuseöffnung 8 eingesteckt werden kann, um dort mit dem elektrisch leitenden Kontaktelement des Schutzschaltgerätes 1 kontaktiert zu werden. Der Begriff "Kontaktelement" bezeichnet dabei nicht nur den eigentlichen Kontakt des Schutzschaltgerätes 1, sondern umfasst alle im Bereich Gehäuseöffnung 8 angeordneten, elektrisch leitenden Bauteile, also auch den Klemmrahmen und das Druckstück der Anschlussklemme des Schutzschaltgerätes 1.In the region of the two narrow sides 6, an insulating device 100 is attached to the housing 2 of the protective switching device 1 respectively. In the illustrated, assembled state of the insulation device 100 on the housing 2, the first partial opening 105-1 and the second partial opening 105-2 are in the region of the housing opening 8, so that an electrical connection line through the first partial opening 105-1 or the second partial opening 105-2 can be inserted through into the housing opening 8 in order to be contacted there with the electrically conductive contact element of the protective switching device 1. The term "contact element" not only designates the actual contact of the protective switching device 1, but includes all arranged in the housing opening 8, electrically conductive components, including the clamping frame and the pressure piece of the terminal of the protection device. 1

Figur 5A zeigt das Schutzschaltgerät 1 mit der aus den Figuren 1A und 1B bekannten Isolationsvorrichtung 100, bei dem das Isolationselement 110 einstückig an den Grundkörper der Isolationsvorrichtung 100 angeformt ist und bei Bedarf herausgebrochen werden kann. Im Unterschied dazu ist in Figur 5B das Schutzschaltgerät 1 mit der aus Figur 4C bekannten Isolationsvorrichtung 100, bei der das Isolationselement 110 nachträglich am Grundkörper der Isolationsvorrichtung 100 montierbar ist, kombiniert. In beiden Fällen wird mit Hilfe der Isolationsvorrichtung 100 die Gehäuseöffnung 8 soweit abgedeckt, dass ein dahinter angeordnetes Kontaktelement nicht mehr mit bloßem Finger berührt werden kann. Auf diese Weise ist ein wirksamer Schutz vor elektrischem Schlag durch eine manuelle Berührung der unter Spannung stehenden Teile realisierbar. FIG. 5A shows the protection device 1 with the from the Figures 1A and 1B known insulation device 100, in which the insulation element 110 is integrally formed on the main body of the insulation device 100 and can be broken if necessary. In contrast to this is in FIG. 5B the protection device 1 with the off FIG. 4C known insulation device 100, in which the insulation element 110 is subsequently mounted on the main body of the insulation device 100, combines. In both cases, the housing opening 8 is covered so far with the aid of the insulating device 100 that a contact element arranged behind it can no longer be touched with the bare finger. In this way, effective protection against electric shock by manual contact of the live parts is feasible.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
SchutzschaltgerätProtection device
22
Gehäusecasing
33
Betätigungselementjig
44
Frontseitefront
55
Befestigungsseitemounting side
66
Schmalseitenarrow side
77
Breitseitebroadside
88th
Gehäuseöffnunghousing opening
99
Befestigungsmittelfastener
100100
Isolationsvorrichtungisolation device
101101
erste Trennwandfirst partition
102102
zweite Trennwandsecond partition
103103
Verbindungsbereichconnecting area
104104
Befestigungselementfastener
105105
Öffnung
105-1 erste Teilöffnung
105-2 zweite Teilöffnung
opening
105-1 first partial opening
105-2 second partial opening
107107
Stegweb
108108
Versteifungsrippestiffening rib
109109
Halteelementretaining element
110110
Isolationselementinsulation element
111111
Anguss-StegeSprue webs

Claims (8)

  1. Electromechanical protective switching device (1), in particular line circuit breaker, residual-current circuit breaker or power breaker, having at least one insulating apparatus (100) for covering a conductive contact element of the electromechanical protective switching device (1), wherein the conductive contact element is arranged behind a housing opening (8) in the protective switching device (1),
    - comprising a main body which can be fastened to a housing (2) of the protective switching device (1) and has an opening (105) for at least one electrical connection line to pass through for the purpose of contact to be made by the contact element,
    - wherein the insulating apparatus (100) has an insulating element (110) which is firmly but detachably connected to the main body in the region of the opening (105), and
    - wherein the opening (105) has an opening cross section which, with the aid of the insulating element (110), can be matched to a line cross section of the electrical connection line in such a way that, in the state in which the insulating apparatus (100) is mounted on the protective switching device (1), manual contact with the contact element is precluded,
    characterized
    in that the insulating apparatus (100) has insulating elements (110) of different dimensions which can be combined with the main body and cover differently sized parts of the opening (105), so that the opening cross section can be matched to the different line cross sections both by fitting and also by removing the insulating element (110).
  2. Protective switching device (1) according to Claim 1,
    characterized
    in that the insulating element (100) can be connected to the main body by insertion or clipping.
  3. Protective switching device (1) according to either of the preceding claims,
    characterized
    in that the insulating apparatus (100) has an insulating element (110) which is integrally but detachably connected to the main body.
  4. Protective switching device (1) according to one of the preceding claims,
    characterized
    in that the insulating apparatus (100) is designed such that it can be plug-mounted or pushed onto the protective switching device (1).
  5. Protective switching device (1) according to one of the preceding claims,
    characterized
    in that the main body is of substantially u-shaped design, wherein a first limb of the u-shaped main body is formed by a first separating wall (101), and a second limb of the u-shaped main body is formed by a second separating wall (102).
  6. Protective switching device (1) according to Claim 5,
    characterized
    in that the outer distance of the first separating wall (101) from the second separating wall (102) corresponds substantially to a width of the protective switching device (1) .
  7. Protective switching device (1) according to one of the preceding claims,
    characterized
    in that the insulating apparatus (100) can be produced by means of plastic injection moulding.
  8. Protective switching device (1) according to one of the preceding claims,
    characterized
    in that the protective switching device (1) is arranged in a busbar assembly, wherein the insulating apparatus (100) serves to electrically insulate the protective switching device (1) from at least one protective switching device which is arranged adjacent to it.
EP16190725.8A 2015-11-11 2016-09-27 Isolation device and electromechanical protection switching device Active EP3168850B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015222205.5A DE102015222205A1 (en) 2015-11-11 2015-11-11 Isolation device and electromechanical protection device

Publications (2)

Publication Number Publication Date
EP3168850A1 EP3168850A1 (en) 2017-05-17
EP3168850B1 true EP3168850B1 (en) 2018-07-04

Family

ID=57003428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16190725.8A Active EP3168850B1 (en) 2015-11-11 2016-09-27 Isolation device and electromechanical protection switching device

Country Status (2)

Country Link
EP (1) EP3168850B1 (en)
DE (1) DE102015222205A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102301634B1 (en) * 2020-01-03 2021-09-13 엘에스일렉트릭 (주) Molded case circuit breaker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2740265B1 (en) * 1995-10-18 1997-11-14 Schneider Electric Sa BLOCK FOR CONNECTING ELECTRICAL CONDUCTORS TO AN ELECTRICAL APPARATUS
ES2161614B2 (en) * 1999-07-13 2002-11-16 Power Controls Iberica Sl TERMINAL PROTECTION DEVICE FOR LOW VOLTAGE DEVICES.
JP2010027334A (en) 2008-07-17 2010-02-04 Mitsubishi Electric Corp Circuit breaker
DE102008064124A1 (en) * 2008-12-19 2010-07-22 Siemens Aktiengesellschaft Insulating element and conductive contact element for an electrical installation device and electrical installation device
JP5578677B2 (en) * 2010-10-04 2014-08-27 日東工業株式会社 Circuit breaker terminal cover
DE102011082191B4 (en) * 2011-09-06 2021-06-24 Siemens Aktiengesellschaft Isolation device, circuit breaker and busbar assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
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EP3168850A1 (en) 2017-05-17

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