EP1146534A1 - Switching mechanism for a circuit breaker - Google Patents

Switching mechanism for a circuit breaker Download PDF

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Publication number
EP1146534A1
EP1146534A1 EP00890116A EP00890116A EP1146534A1 EP 1146534 A1 EP1146534 A1 EP 1146534A1 EP 00890116 A EP00890116 A EP 00890116A EP 00890116 A EP00890116 A EP 00890116A EP 1146534 A1 EP1146534 A1 EP 1146534A1
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EP
European Patent Office
Prior art keywords
switching
rotation
pawl
axis
mechanical axis
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
EP00890116A
Other languages
German (de)
French (fr)
Other versions
EP1146534B1 (en
Inventor
Alfred Ing. Nyzner
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.)
Felten & Guilleaume KG
Original Assignee
Felten & Guilleaume KG
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.)
Filing date
Publication date
Priority to AT00890116T priority Critical patent/ATE211581T1/en
Priority to ES00890116T priority patent/ES2170047T3/en
Priority to PT00890116T priority patent/PT1146534E/en
Priority to DE50000092T priority patent/DE50000092D1/en
Priority to EP00890116A priority patent/EP1146534B1/en
Application filed by Felten & Guilleaume KG filed Critical Felten & Guilleaume KG
Priority to SI200030010T priority patent/SI1146534T1/en
Priority to DK00890116T priority patent/DK1146534T3/en
Publication of EP1146534A1 publication Critical patent/EP1146534A1/en
Application granted granted Critical
Publication of EP1146534B1 publication Critical patent/EP1146534B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/18—Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H2001/223—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member using a torsion spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the invention relates to a switching mechanism for a circuit breaker, the two together has switching switching paths, each of which is movable, on a switching bridge Have fixed contact, with a mechanical axis of rotation fixed to the housing pivotally mounted carrier is provided, which is a normal to the mechanical axis of rotation has extending partition, on the two side surfaces of which a cylinder, a system stop concentric to the mechanical axis of rotation and a leg rest It is molded onto which cylinder the switching bridges with their bores and torsion springs are placed with their windings, so that the longitudinal axes of the switching bridge axes of rotation form, the first leg of the torsion springs on the switching bridges and the second legs rest on the leg supports, with which the switching bridges are constantly in Direction of the investment strokes, which have different strengths are, one at the upper end of the intermediate wall opposite the cylinders Is formed on which the first end of a helical compression spring is placed, the second end of which is supported on the housing, furthermore a
  • a switching mechanism of this type has become known from EP-B1-696 041 .
  • This granted patent teaches or expressly states in claim 1 that the mechanical axis of rotation is aligned coaxially with the switching bridge axis of rotation.
  • the two movable contacts are offset from the fixed contacts at different times, so an arc arises only between the contact pieces of the during the first phase of the opening process, in which the first movable contact has already lifted, but the second movable contact is still on the associated fixed contact first switching distance.
  • this is achieved in that the switching bridge axes of rotation in the direction the movable contacts are offset from the mechanical axis of rotation.
  • the re-ignition voltage of two arcs lying in series to one another is significantly higher than the re-ignition voltage of a single arc, so that the simultaneous opening of the two switching paths according to the invention allows the short-circuit current to be finally interrupted earlier than if, as in EP-B1-696 041 , only one initially of the two switching sections is opened.
  • a second factor, which is essential for the rapid extinguishing of an arc driven by an alternating voltage, is to open the arc running distance as quickly as possible over a large length. Since with the design of the switching mechanism according to the invention, a simultaneous disconnection of the short-circuit circuit at two points - and thus the formation of two arcs in series - is achieved, the entire arc running distance is from the outset twice as long as when the circuit is opened at only one point. During the opening movement of the movable contact pieces, two arcing paths are opened at the same time, which means that the entire arcing path to be bridged by the current to be switched off is opened twice as quickly as in the case of a switching mechanism according to EP-B1-696 041, where initially only one Arc is formed.
  • the moving contacts must move at such an angle during the opening movement be pivoted relative to the fixed contacts, that in the OFF position movable from the fixed contacts in one a puncture-proof Interruption-ensuring distance are arranged.
  • the switching bridge axis of rotation is arranged coaxially to the mechanical axis of rotation, as in EP-B1-696 041 , it is connected with the fact that the switching bridges extend over the entire distance between the movable contacts and the mechanical axis of rotation.
  • the switching bridge axes of rotation in the direction of the movable contacts offset from the mechanical axis of rotation, so are the switching bridges are significantly shorter.
  • the switching mechanism shown in this document like the switching mechanism according to the invention, has a carrier tab 4 on which a switching bridge 5, a jack support 6 and a jack 3 are rotatably mounted.
  • the entire mechanism is mounted so as to be pivotable about a mechanical axis of rotation 11 fixed to the housing.
  • the pawl support 6 can also be pivoted about this axis of rotation 11 relative to the carrier bracket 4.
  • the switching bridge 5 can be pivoted about the axis of rotation 12 relative to the carrier bracket 4, this axis of rotation 12 being spaced apart from the axis of rotation 11 of the mechanical system, ie the axes of rotation 12 and 11 are offset from one another.
  • AT-B-404 648 only describes single-pole switches, it cannot give any indication that the principle of shifting the switching bridge compared to the mechanical axis of rotation is to be applied to two-pole switches. In addition, with single-pole switches, there can never be a need to lift two movable contact pieces from fixed contact pieces at the same time.
  • AT-B-404 648 can therefore not suggest to offset the switching bridge axes of rotation relative to the mechanical axis of rotation of this two-pole switching device in order to achieve this effect, which is advantageous in a two-pole switching device.
  • the system stops as different, spaced apart components are formed from the leg supports.
  • the forces exerted on the switching bridges by the torsion springs can thus be greatly increased simply by changing the distance between the leg supports and the system stops to adjust.
  • the pawl axis of rotation spaced from the System stops and the leg supports is arranged.
  • the pawl can thus be independent of the other components of the switching mechanism and can therefore be attached to the carrier with little technical effort.
  • Fig. 1 the housing of a circuit breaker is shown, which two Switching paths, namely one for the phase conductor L of a single-phase AC circuit and one for the associated neutral conductor N.
  • Each of these switching paths comprises a connecting terminal 2 for the supply line and one Terminal 3 for the discharge (see Fig. 3).
  • first terminal 2 is one Busbar 4 connected to the first winding end of an impact armature 5th connected.
  • the second winding end of the anchor trigger 5 is with a connected to further busbar 6, which carries a fixed contact 7.
  • This switching bridge 9 is flexible Conductor rope 10 with the free end of a bimetallic strip 11 in connection. That immobile relative to the housing held second end of this bimetallic strip 11 is via a Busbar 12 connected to the second terminal 3.
  • This busbar 12 is connected to a spark horn 13, which with the busbar 6 one to the contacts 7.8 adjoining spark gap forms a spark quenching chamber in the end area 14, consisting of a plurality of mutually parallel quenching plates, is arranged.
  • Arcs are extinguished in this quenching chamber 14, which 7.8 in when the contacts open at a different time from the zero crossing between them and along the busbar 6 and the spark horn 13 run into the extinguishing chamber 14.
  • Anchor trigger 5 and bimetallic strip 11 are from the current to this switching path connected phase conductor and are used to monitor the height of this Current. Both components act when there is an impermissible amount of this current a switching mechanism 15 and can thus turn off the circuit breaker, that is Lift off the movable contact 8 from the fixed contact 7, which initiate Shutdown is carried out by the switching mechanism 15.
  • the striking anchor trigger 5 is used in a manner known per se to detect a short-term (short-circuit) current that exceeds the nominal value by a multiple and the bimetallic trigger 11 for detection of just a little above the nominal value current that is present for a long time (overload).
  • the switching path of the neutral conductor N which is not shown in the drawing figures, is so constructed like the phase conductor switching path just discussed, but it has none Anchor trigger and no bimetallic strip, so the current flowing through it not monitored.
  • the switching bridge 9 'of the neutral conductor switching path is common moved with the switching bridge 9 of the phase conductor switching path, so that the neutral conductor switching path is always switched with the phase conductor switching path.
  • the housing of the circuit breaker is still two full switching paths in it are housed, only one division unit (18mm) wide.
  • the present invention relates to the structural design of the Switching mechanism 15. This first includes the two switching bridges 9,9 'of the two Switching paths of the circuit breaker, each of which carries a movable contact 8,8 '.
  • the switching mechanism 15 has three main components, namely the carrier 17, the Pawl support 29 and the pawl 33 (see Fig. 4).
  • the carrier 17 is pivotable about a mechanical axis of rotation 16 in the housing stored, which is realized in the form that a pin is fixed in the housing and the carrier 17 has a bore corresponding to the outer diameter of this pin, with which it is stuck over this pen.
  • the carrier 17 has a normal to the mechanical axis of rotation 16 extending intermediate wall 18, on the two side surfaces of some components, namely, cylinders 19, 19 ', contact stops 26, 26' and leg supports 25, 25 'are formed are.
  • the cylinders 19, 19 ' serve for the rotatable mounting of the switching bridges 9, 9' on the carrier 17, thus form switching bridge axes of rotation 36.
  • the abutment stops 26, 26 ' preferably also have a cylindrical shape and are with Distance from the cylinders 19, 19 'and concentric to the mechanical axis of rotation 16 at the Partition 18 integrally formed.
  • the switching bridge axes of rotation 36 are thus in the direction the movable contacts 8, 8 'are arranged offset from the mechanical axis of rotation 16.
  • these torsion springs 21, 21 'with their windings 22, 22' are on the cylinders 19,19 'placed, their first legs 23,23' are in the area of the movable contacts 8.8 'on the switching bridges 9.9' and their second legs 24.24 'are on the Leg supports 25, 25 '(see Fig. 3).
  • the switching bridges 9,9 ' have exactly the same dimensions, so they are congruent executed.
  • the system stops 26, 26 ' are in alignment with one another and concentric with the Mechanism axis of rotation 16 arranged, but their strengths or diameters are so far different from each other than the diameter of the neutral conductor switching path assigned system stop 26 'smaller than the diameter of the phase conductor switching path assigned system stop 26 (see FIG. 6). It follows that the two movable contacts 8,8 'when looking at the switching mechanism 15 in the direction of Mechanical axis of rotation 16 ⁇ in the state lifted from the fixed contacts 7, 7 'to one another are angularly offset by the amount a (see Fig. 7).
  • the pawl support designated 29 has a bore 30 with which it on the System stop 26 is placed and thus rotatably mounted on the carrier 17.
  • this pawl support 29 has a Shoulder 31 on which a pawl 33 can attach.
  • This pawl 33 is a U-shaped component, preferably bent from a thin sheet, which has holes 38 in its legs for receiving a hollow rivet 39.
  • the upper end of the intermediate wall 18 of the carrier 17 is also a bore 40 introduced through which the hollow rivet 39 is passed.
  • the pawl 33 is thus at the upper end of the intermediate wall 18 rotatably mounted about a pawl axis of rotation 32.
  • the pawl 33 has a projection at its end opposite the bores 38 37 on who can sit on the shoulder 31. Is - as shown in Fig. 2 and 3 - the Pawl 33 locked in this way with the pawl support 29, the three main components of the Switch mechanism 15 (carrier 17, pawl support 29 and pawl 33) form-fitting with each other connected and the switching mechanism 15 can by means of the actuating lever 35, which has a Bracket 34 is coupled to the pawl 33, moved, i.e. from their ON position (Fig. 2) to their OFF position (Fig. 3) and vice versa.
  • Competent residual current detection component impact armature trigger 5 or bimetallic strip 11
  • Competent residual current detection component impact armature trigger 5 or bimetallic strip 11
  • the Impact anchor 50 of the impact anchor trigger 5 is struck directly on this section 41; the free, in the event of impermissible heating due to impermissibly high continuous current in the direction the second terminal 3 moving end of the bimetallic strip 11 takes one Drawbar 42 with which is connected to section 41 via a tubular rivet 43.
  • This pivoting is carried out by a helical compression spring 28, the first end of which is placed on a pin 27, the upper on the cylinders 19, 19 'opposite End of the intermediate wall 18 of the carrier 17 is formed.
  • the second end of this Helical compression spring 28 is supported on the housing.
  • the first end is one another torsion spring 45 set.
  • Your free leg 46 sits on section 41 of the Pawl support 29, whereby the pawl support 29 from this torsion spring 45 in Is biased clockwise.
  • This bias causes that after the latching of latch projection 37 and shoulder 31 has been released, the latch support 29 against the Pivoted clockwise and thus the shoulder 31 is moved towards the pawl 33.
  • the operating lever 35 has been brought into the OFF position (which is automatic by a spring built into it), so that the pawl projection 37 can again System come on shoulder 31.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)

Abstract

The mechanism has a pivotable bearer (17) with an intermediate wall normal to the mechanism rotation axis and a pawl support with a shoulder near the upper end of the wall on which a pawl protrusion can engage. The pawl rotates about an axis at the upper end of the wall and is coupled to an actuating lever. The switching bridge (9) rotation axis (36) is offset towards movable contacts (8,8') with respect to the mechanism rotation axis (16).

Description

Die Erfindung betrifft eine Schaltmechanik für einen Schutzschalter, der zwei gemeinsam zu schaltende Schaltstrecken hat, welche jeweils einen beweglichen, auf einer Schaltbrücke festgelegten Kontakt aufweisen, wobei ein um eine gehäusefeste Mechanik-Drehachse verschwenkbar gelagerter Träger vorgesehen ist, der eine normal zur Mechanik-Drehachse verlaufende Zwischenwandung aufweist, an deren beiden Seitenflächen jeweils ein Zylinder, ein zur Mechanik-Drehachse konzentrischer Anlageanschlag sowie eine Schenkelauflage angeformt ist, auf welche Zylinder die Schaltbrücken mit ihren Bohrungen sowie Drehfedern mit ihren Windungen aufgesetzt sind, sodaß die Längsachsen der Zylinder Schaltbrücken-Drehachsen bilden, wobei die ersten Schenkel der Drehfedern an den Schaltbrücken und die zweiten Schenkeln an den Schenkelauflagen anliegen, womit die Schaltbrücken ständig in Richtung der voneinander verschiedene Stärken aufweisenden Anlageanschlägen belastet sind, wobei am den Zylindern gegenüberliegenden oberen Ende der Zwischenwandung ein Zapfen angeformt ist, auf welchen das erste Ende einer Schraubendruckfeder aufgesetzt ist, dessen zweites Ende am Gehäuse abgestützt ist, wobei weiters eine Klinkenauflage vorgesehen ist, die mit ihrer Bohrung auf den Anlageanschlag aufgesetzt ist und im Bereich des oberen Endes der Zwischenwandung eine Schulter aufweist, an der ein Vorsprung einer Klinke eingreifen kann, welche Klinke am oberen Ende der Zwischenwandung um eine Klinken-Drehachse drehbar gelagert ist und wobei ein Bügel vorgesehen ist, der die Klinke mit einem Betätigungshebel kuppelt.The invention relates to a switching mechanism for a circuit breaker, the two together has switching switching paths, each of which is movable, on a switching bridge Have fixed contact, with a mechanical axis of rotation fixed to the housing pivotally mounted carrier is provided, which is a normal to the mechanical axis of rotation has extending partition, on the two side surfaces of which a cylinder, a system stop concentric to the mechanical axis of rotation and a leg rest It is molded onto which cylinder the switching bridges with their bores and torsion springs are placed with their windings, so that the longitudinal axes of the switching bridge axes of rotation form, the first leg of the torsion springs on the switching bridges and the second legs rest on the leg supports, with which the switching bridges are constantly in Direction of the investment strokes, which have different strengths are, one at the upper end of the intermediate wall opposite the cylinders Is formed on which the first end of a helical compression spring is placed, the second end of which is supported on the housing, furthermore a jack support is provided, which is placed with its bore on the system stop and in the area of the upper end of the intermediate wall has a shoulder on which a projection Pawl can engage, which pawl by one at the upper end of the intermediate wall Pawl axis of rotation is rotatably mounted and a bracket is provided which the pawl couples with an operating lever.

Eine Schaltmechanik dieser Art ist durch die EP-B1-696 041 bekannt geworden. Dieses erteilte Patent lehrt bzw. hält in seinem Anspruch 1 ausdrücklich fest, daß die Mechanik-Drehachse koaxial zur Schaltbrücken-Drehachse ausgerichtet ist.A switching mechanism of this type has become known from EP-B1-696 041 . This granted patent teaches or expressly states in claim 1 that the mechanical axis of rotation is aligned coaxially with the switching bridge axis of rotation.

Es wurden Schaltversuche mit Schutzschaltern durchgeführt, deren Schaltmechaniken den in der EP-B1-696 041 dargelegten konstruktiven Aufbau, insbesondere eine zur Schaltbrücken-Drehachse koaxiale Mechanik-Drehachse aufwiesen. Dabei hat sich gezeigt, daß beim Abschalten die beiden beweglichen Kontakte nicht gleichzeitig, sondern zeitlich versetzt von den ihnen zugeordneten feststehenden Kontakten abgehoben werden. In Spalte 2, Zeilen 14 und 15 der EP-B1-696 041 wird dieses zeitlich versetzte Abheben der beiden beweglichen Kontakte auch dezidiert angeführt.Switching tests were carried out with circuit breakers, the switching mechanisms of which had the structural design set out in EP-B1-696 041 , in particular a mechanical axis of rotation coaxial with the switching bridge axis of rotation. It has been shown that the two movable contacts are not lifted off at the same time, but at different times from the associated fixed contacts when they are switched off. In column 2, lines 14 and 15 of EP-B1-696 041 , this staggered lifting of the two movable contacts is also specifically stated.

Zu bedenken ist, daß ein in Rede stehendes zweipoliges Schaltgerät einem einpoligen Wechselstromkreis vorgeschalten ist, wobei die erste Schaltstrecke in die Zuleitung (=Phasenleiter) und die zweite Schaltstrecke in die Ableitung (=Neutralleiter) dieses Stromkreises geschalten ist. Beide Schaltstrecken sind daher vom selben Strom durchflossen bzw. müssen ―im Kurzschlußfall- denselben Strom unterbrechen.It should be borne in mind that a two-pole switching device in question is a single-pole AC circuit is connected upstream, the first switching path in the supply line (= Phase conductor) and the second switching path into the derivative (= neutral conductor) this Circuit is switched. The same current therefore flows through both switching paths or must interrupt the same current in the event of a short circuit.

Wenn nun ―so wie von der EP-B1-696 041 gelehrt (vgl. Spalte 2, Zeilen 14,15 dieses Dokumentes) bzw. so wie bei einer Schaltmechanik ausgeführt nach der EP-B1-696 041 tatsächlich vorgesehen- die beiden beweglichen Kontakte zeitlich zueinander versetzt von den feststehenden Kontakten abgehoben werden, so entsteht während der ersten Phase des Öffnungsvorganges, in welcher der erste bewegliche Kontakt bereits abgehoben hat, der zweite bewegliche Kontakt aber noch auf dem ihm zugeordneten feststehenden Kontakt anliegt, ein Lichtbogen nur zwischen den Kontaktstücken der ersten Schaltstrecke.If ―so as taught by EP-B1-696 041 (cf. column 2, lines 14, 15 of this document) or as actually provided for a switching mechanism according to EP-B1-696 041 , the two movable contacts are offset from the fixed contacts at different times, so an arc arises only between the contact pieces of the during the first phase of the opening process, in which the first movable contact has already lifted, but the second movable contact is still on the associated fixed contact first switching distance.

Da dieser Lichtbogen von einem Kurzschlußstrom durchflossen ist, wird in ihm eine sehr große Energiemenge freigesetzt, welche in den Kontaktstücken der ersten Schaltstrecke in entsprechend große Wärmemengen umgesetzt wird.Since a short-circuit current flows through this arc, it becomes a very short one large amount of energy released, which in the contact pieces of the first switching path in correspondingly large amounts of heat are implemented.

Die starke Erwärmung der Kontaktstücke hat einen relativ starken Verschleiß dieser Kontaktstücke (Kontaktabbrand) zur Folge. Dieser starke Kontaktabbrand führt zu einer geringen Lebensdauer der ersten Schaltstrecke ―und damit natürlich des gesamten Schaltgerätes. Soll eine wirtschaftlich vertretbare Lebensdauer der ersten Schaltstrecke und damit des gesamten Schaltgerätes erreicht werden, müssen zur Kompensation des starken Kontaktabbrandes die Kontaktstücke der ersten Schaltstrecke mit entsprechend großem Volumen ausgebildet werden.The strong heating of the contact pieces causes them to wear relatively heavily Contact pieces (contact erosion) result. This strong contact erosion leads to one short lifespan of the first switching path ― and of course the whole Switchgear. Should an economically acceptable service life of the first switching path and So that the entire switching device can be reached, must compensate for the strong Contact erosion the contact pieces of the first switching path with a correspondingly large Volume are formed.

Großvolumige Kontaktstücke haben aber notwendigerweise größere Abmessungen, welche letztendlich zu einer Vergrößerung des gesamten Schaltgerätes führen.Large-volume contact pieces necessarily have larger dimensions, which ultimately lead to an enlargement of the entire switching device.

Es ist Aufgabe der vorliegenden Erfindung, eine Schaltmechanik der eingangs angeführten Art anzugeben, welche bei möglichst kleinem Volumen der Kontaktstücke beider Schaltstrecken -und damit bei kleinen Schaltgerät-Abmessungen- und bei hoher Lebensdauer dieser Schaltstrecken eine besonders schnell ablaufende Unterbrechung von Kurzschlußströmen ermöglicht.It is an object of the present invention, a switching mechanism of the above Specify type, which with the smallest possible volume of the contact pieces of both Switching distances - and thus with small switchgear dimensions - and with a long service life of these switching sections a particularly rapid interruption of Short-circuit currents enabled.

Erfindungsgemäß wird dies dadurch erreicht, daß die Schaltbrücken-Drehachsen in Richtung der beweglichen Kontakte versetzt gegenüber der Mechanik-Drehachse angeordnet sind.According to the invention this is achieved in that the switching bridge axes of rotation in the direction the movable contacts are offset from the mechanical axis of rotation.

Durch diese versetzte Anordnung der Drehachsen wird erreicht, daß die beiden beweglichen Kontaktstücke gleichzeitig von den ihnen zugeordneten feststehenden Kontaktstücken abgehoben werden. Aus dieser gleichzeitigen Öffnung ergibt sich, daß der abzuschaltende Kurzschlußstrom schon bei Beginn des Abschaltvorganges an zwei Stellen gleichzeitig unterbrochen wird. Es werden in beiden Schaltstrecken Lichtbögen ausgebildet, womit die Energie des Kurzschlußstromes in zwei Lichtbögen freigesetzt werden kann.This offset arrangement of the axes of rotation ensures that the two movable Contact pieces simultaneously from the fixed contact pieces assigned to them be lifted off. From this simultaneous opening it follows that the one to be switched off Short-circuit current at the beginning of the switch-off process at two points simultaneously is interrupted. Arcs are formed in both switching paths, with which the Energy of the short-circuit current can be released in two arcs.

Die innerhalb jedes Lichtbogens freigesetzte Energie beträgt damit nur die Hälfte der im einzigen Lichtbogen einer Schaltmechanik gemäß der EP-B1-696 041 freiwerdende und an die Kontaktstücke abgegebene Energie. Hieraus ergibt sich ein deutlich geringerer Kontaktabbrand und damit eine höhere Lebensdauer sämtlicher Kontaktstücke und damit des gesamten Schaltgerätes.The energy released within each arc is therefore only half of the energy released in the single arc of a switching mechanism according to EP-B1-696 041 and released to the contact pieces . This results in a significantly lower contact erosion and thus a longer service life for all contact pieces and thus for the entire switching device.

Bei der Auftrennung eines Wechselstromes durch Beabstandung zweier Kontaktstücke läuft diese Beabstandungs-Bewegung der Kontaktstücke verglichen mit der Frequenz des Wechselstromes (50Hz) langsam ab. Während der Öffnungsbewegung der Kontaktstücke durchläuft der Wechselstrom daher einige Perioden, während derer er auch zu Null wird, wobei der Lichtbogen erlischt. Eine Neuzündung des Lichtbogens nach einem solchen Nulldurchgangs-bedingten Erlöschen kann nur dann stattfinden, wenn die den Kurzschlußstrom treibende Spannung die Neuzündungsspannung des Lichtbogens übersteigt.When separating an alternating current by spacing two contact pieces running this spacing movement of the contact pieces compared to the frequency of the AC (50 Hz) slowly. During the opening movement of the contact pieces the alternating current therefore runs through a number of periods during which it also becomes zero, the arc extinguishes. A new ignition of the arc after one Extinction due to zero crossing can only take place if the Short circuit current driving voltage exceeds the re-ignition voltage of the arc.

Die Neuzündungsspannung zweier in Serie zueinander liegender Lichtbögen ist deutlich höher als die Neuzündungsspannung eines einzigen Lichtbogens, sodaß durch die erfindungsgemäß erreichte gleichzeitige Öffnung der beiden Schaltstrecken der Kurzschlußstrom früher endgültig unterbrochen werden kann, als wenn wie bei der EP-B1-696 041 zunächst nur eine der beiden Schaltstrecken geöffnet wird.The re-ignition voltage of two arcs lying in series to one another is significantly higher than the re-ignition voltage of a single arc, so that the simultaneous opening of the two switching paths according to the invention allows the short-circuit current to be finally interrupted earlier than if, as in EP-B1-696 041 , only one initially of the two switching sections is opened.

Damit kann die gesamte bei einem Abschaltvorgang im Schaltgerät erzeugte Wärme verringert werden, womit das gesamte Schaltgerät weniger temperaturbeständig, insbesondere mit kleineren Abmessungen, ausgeführt werden kann.This means that all of the heat generated in the switching device during a switch-off process can be reduced, making the entire switching device less temperature-resistant, in particular with smaller dimensions.

Ein zweiter, zum raschen endgültigen Erlöschen eines von einer Wechselspannung getriebenen Lichtbogens wesentlicher Faktor ist das möglichst rasche Aufziehen der Lichtbogen-Laufstrecke auf große Länge. Da mit der erfindungsgemäßen Ausbildung der Schaltmechanik ein gleichzeitiges Auftrennen des Kurzschlußstromkreises an zwei Stellen - und damit die Ausbildung zweier in Serie liegender Lichtbögen- erreicht wird, ist die gesamte Lichtbogen-Laufstrecke von vornherein doppelt so lang wie bei Öffnung des Stromkreises an nur einer Stelle. Bei der Öffnungsbewegung der beweglichen Kontaktstücke werden gleichzeitig zwei Lichtbogen-Laufstrecken aufgezogen, womit die gesamte, vom abzuschaltenden Strom zu überbrückende Lichtbogen-Laufstrecke doppelt so schnell aufgezogen wird, als bei einer Schaltmechanik gemäß der EP-B1-696 041, wo ja zunächst nur ein Lichtbogen ausgebildet wird.A second factor, which is essential for the rapid extinguishing of an arc driven by an alternating voltage, is to open the arc running distance as quickly as possible over a large length. Since with the design of the switching mechanism according to the invention, a simultaneous disconnection of the short-circuit circuit at two points - and thus the formation of two arcs in series - is achieved, the entire arc running distance is from the outset twice as long as when the circuit is opened at only one point. During the opening movement of the movable contact pieces, two arcing paths are opened at the same time, which means that the entire arcing path to be bridged by the current to be switched off is opened twice as quickly as in the case of a switching mechanism according to EP-B1-696 041, where initially only one Arc is formed.

Die beweglichen Kontakte müssen bei der Öffnungsbewegung um einen solchen Winkel gegenüber den feststehenden Kontakten verschwenkt werden, daß in der AUS-Stellung die beweglichen von den feststehenden Kontakten in einem eine durchschlagsichere Unterbrechung gewährleistenden Abstand angeordnet sind.The moving contacts must move at such an angle during the opening movement be pivoted relative to the fixed contacts, that in the OFF position movable from the fixed contacts in one a puncture-proof Interruption-ensuring distance are arranged.

Wird die Schaltbrücken-Drehachse so wie in der EP-B1-696 041 koaxial zur Mechanik-Drehachse angeordnet, so ist damit verbunden, daß sich die Schaltbrücken über den gesamten Abstand zwischen den beweglichen Kontakten und der Mechanik-Drehachse erstrecken.If the switching bridge axis of rotation is arranged coaxially to the mechanical axis of rotation, as in EP-B1-696 041 , it is connected with the fact that the switching bridges extend over the entire distance between the movable contacts and the mechanical axis of rotation.

Wenn hingegen in erfindungsgemäßer Weise die Schaltbrücken-Drehachsen in Richtung der beweglichen Kontakte, versetzt gegenüber der Mechanik-Drehachse angeordnet sind, so sind die Schaltbrücken deutlich kürzer ausgebildet.If, however, the switching bridge axes of rotation in the direction of the movable contacts, offset from the mechanical axis of rotation, so are the switching bridges are significantly shorter.

Durch diese kürzere Ausbildung der Schaltbrücken weisen diese geringere Massen auf, womit das Massenträgheitsmoment der gesamten Schaltmechanik herabgesetzt ist. Dieses verringerte Massenträgheitsmoment führt dazu, daß die Schaltmechanik besonders rasch von der EIN- in die AUS-Stellung gebracht werden kann.Due to this shorter design of the switching bridges, they have lower masses, which means the moment of inertia of the entire switching mechanism is reduced. This reduced moment of inertia leads to the fact that the switching mechanism is particularly fast the ON position can be moved to the OFF position.

Zusammenfassend führt die erfindungsgemäße Versetzung der Schaltbrücken-Drehachse gegenüber der Mechanik-Drehachse in Richtung der beweglichen Kontakte in dreierlei Hinsicht zu einer schnelleren, mit einem geringeren Kontaktabbrand und einer geringeren Wärmeentwicklung im Schaltgerät verbundenen Abschaltung eines Kurzschlußstromes:

  • Durch die gleichzeitige Ausbildung zweier in Serie liegender Lichtbögen wird die vom Kurzschlußstrom erzeugte Energie auf beide Schaltstrecken aufgeteilt, woraus sich in beiden Schaltstrecken jeweils eine relativ geringe Belastung der Kontaktstücke, d.h. ein geringer Kontaktabbrand ergibt.
  • Durch die gleichzeitige Ausbildung zweier Lichtbögen ist die gesamte, vom Kurzschlußstrom zu überbrückende Lichtbogen-Laufstrecke größer als bei nur einpoliger Unterbrechung bzw. wird verglichen mit einer einpoligen Unterbrechung- doppelt so schnell aufgezogen. Die Neuzündungsspannung ist damit höher bzw. steigt während der Öffnungsbewegung doppelt so schnell an wie bei nur einpoliger Unterbrechung.
  • Das durch die kleineren Schaltbrücken erreichbare kleinere Massenträgheitsmoment der gesamten Mechanik erlaubt eine schnellere Bewegung derselben.
In summary, the displacement of the switching bridge axis of rotation according to the invention in relation to the mechanical axis of rotation in the direction of the movable contacts leads in three respects to a faster disconnection of a short-circuit current associated with less contact erosion and less heat development in the switching device:
  • Due to the simultaneous formation of two arcs in series, the energy generated by the short-circuit current is divided between the two switching paths, which results in a relatively low load on the contact pieces, ie a low contact erosion, in both switching paths.
  • Due to the simultaneous formation of two arcs, the entire arc running distance to be bridged by the short-circuit current is greater than in the case of only a single-pole interruption, or is opened twice as quickly compared to a single-pole interruption. The re-ignition voltage is thus higher or increases twice as fast during the opening movement as with a single-pole interruption.
  • The smaller mass moment of inertia of the entire mechanism, which can be achieved by means of the smaller switching bridges, permits faster movement of the same.

Ein weiterer Effekt, der sich aus der Versetzung der Schaltbrücken-Drehachsen gegenüber der Mechanikdrehachse ergibt, liegt darin, daß es während der Einschaltbewegung zu einer Reinigung der in der EIN-Stellung aneinander anliegenden Abschnitte der beweglichen und der feststehenden Kontakte kommt:Another effect that results from the displacement of the switching bridge axes of rotation Mechanical axis of rotation results in the fact that it turns into a during the switch-on movement Cleaning the sections of the movable and adjacent to each other in the ON position the fixed contacts comes:

Bei der Verschwenkung des Trägers und damit der auf diesem festgelegten Schaltbrücken in die EIN-Stellung kommen die beweglichen Kontakte an den feststehenden Kontakten zur Anlage.When pivoting the carrier and thus the switching bridges fixed on it in the ON position, the moving contacts on the fixed contacts come to Investment.

Sobald im Zuge dieser Einschaltbewegung ein beweglicher den ihm zugeordneten feststehenden Kontakt berührt, wird eine weitere, synchron mit dem Träger erfolgende Verschwenkung des betreffenden beweglichen Kontaktes verhindert.As soon as in the course of this switch-on movement a movable one assigned to it touched fixed contact, another, synchronized with the carrier Prevents pivoting of the movable contact concerned.

Bei weiter fortschreitender Verschwenkung der Kontaktbrücke wird diese gegen den Druck der Drehfeder entgegen der Träger-Verschwenkrichtung um die Schaltbrückendrehachse verdreht. Das dem beweglichen Kontakt gegenüber liegende Ende der Schaltbrücke wird dabei vom Anschlaganschlag abgehoben (vgl. Fig.2).If the contact bridge continues to pivot, it will counteract the pressure the torsion spring against the carrier pivoting direction about the switching bridge rotation axis twisted. The end of the switching bridge opposite the movable contact is lifted off the stop (see Fig. 2).

Während dieser Verdrehung der Schaltbrücke wird der bewegliche Kontakt tangential gegenüber dem feststehenden Kontakt verschoben, wobei die an einander anliegenden Flächen des feststehenden und des beweglichen Kontaktes aneinander reiben. Auf diesen Flächen befindliche Verunreinigungen werden bei diesem Aneinander-Reiben entfernt, womit stets ein besonders widerstandsarmer Übergang vom feststehenden auf den beweglichen Kontakt sichergestellt ist.During this rotation of the switching bridge, the movable contact becomes tangential shifted relative to the fixed contact, whereby the abutting Rub the surfaces of the fixed and movable contacts together. On this Surface contamination is removed during this rubbing together, with what always a particularly low-resistance transition from the fixed to the movable one Contact is ensured.

Das versetzte Anordnen der Mechanik-Drehachse gegenüber der Schaltbrückendrehachse ist im Zusammenhang mit einem einpoligen Schutzschalter bereits aus der AT-B-404 648 bekannt (vgl. deren Patentanspruch 1): Die in diesem Dokument gezeigte Schaltmechanik weist so wie die erfindungsgemäße Schaltmechanik eine Trägerlasche 4 auf, auf welcher eine Schaltbrücke 5, eine Klinkenauflage 6 und eine Klinke 3 drehbar gelagert sind. Die gesamte Mechanik ist um eine gehäusefeste Mechanikdrehachse 11 verschwenkbar gelagert. Um diese Drehachse 11 ist auch die Klinkenauflage 6 gegenüber der Trägerlasche 4 verschwenkbar. Die Schaltbrücke 5 ist um die Drehachse 12 gegenüber der Trägerlasche 4 verschwenkbar, wobei diese Drehachse 12 von der Mechanikdrehachse 11 beabstandet ist, die Drehachsen 12 und 11 also zueinander versetzt angeordnet sind.The offset arrangement of the mechanical axis of rotation with respect to the switching bridge axis of rotation is already known in connection with a single-pole circuit breaker from AT-B-404 648 (cf. claim 1 thereof): the switching mechanism shown in this document, like the switching mechanism according to the invention, has a carrier tab 4 on which a switching bridge 5, a jack support 6 and a jack 3 are rotatably mounted. The entire mechanism is mounted so as to be pivotable about a mechanical axis of rotation 11 fixed to the housing. The pawl support 6 can also be pivoted about this axis of rotation 11 relative to the carrier bracket 4. The switching bridge 5 can be pivoted about the axis of rotation 12 relative to the carrier bracket 4, this axis of rotation 12 being spaced apart from the axis of rotation 11 of the mechanical system, ie the axes of rotation 12 and 11 are offset from one another.

Da die AT-B-404 648 ausschließlich einpolige Schalter beschreibt, kann sie keinerlei Hinweise darauf geben, das Prinzip der Versetzung der Schaltbrücken- gegenüber der Mechanik-Drehachse bei zweipoligen Schaltern anzuwenden. Darüberhinaus kann bei einpoligen Schaltern niemals die Notwendigkeit entstehen, zwei bewegliche Kontaktstücke gleichzeitig von feststehenden Kontaktstücken abzuheben.Since AT-B-404 648 only describes single-pole switches, it cannot give any indication that the principle of shifting the switching bridge compared to the mechanical axis of rotation is to be applied to two-pole switches. In addition, with single-pole switches, there can never be a need to lift two movable contact pieces from fixed contact pieces at the same time.

Die AT-B-404 648 kann daher nicht anregen, zur Erreichung dieses bei einem zweipoligen Schaltgerät vorteilhaften Effektes die Schaltbrücken-Drehachsen gegenüber der Mechanik-Drehachse dieses zweipoligen Schaltgerätes zu versetzen. AT-B-404 648 can therefore not suggest to offset the switching bridge axes of rotation relative to the mechanical axis of rotation of this two-pole switching device in order to achieve this effect, which is advantageous in a two-pole switching device.

In weiterer Ausgestaltung der Erfindung kann vorgesehen sein, daß die Anlageanschläge als von den Schenkelauflagen verschiedene, voneinander beabstandete Bauteile ausgebildet sind.In a further embodiment of the invention it can be provided that the system stops as different, spaced apart components are formed from the leg supports.

Die von den Drehfedern auf die Schaltbrücken ausgeübten Kräfte lassen sich damit sehr einfach durch Änderung des Abstandes der Schenkelauflagen von den Anlageanschlägen einstellen.The forces exerted on the switching bridges by the torsion springs can thus be greatly increased simply by changing the distance between the leg supports and the system stops to adjust.

Weiters kann vorgesehen sein, daß die Klinken-Drehachse beabstandet von den Anlageanschlägen und den Schenkelauflagen angeordnet ist.Furthermore, it can be provided that the pawl axis of rotation spaced from the System stops and the leg supports is arranged.

Die Klinke kann dadurch unabhängig von den übrigen Bauteilen der Schaltmechanik und deshalb mit geringem technischen Aufwand verbunden am Träger festgelegt werden.The pawl can thus be independent of the other components of the switching mechanism and can therefore be attached to the carrier with little technical effort.

Als günstig hat es sich erwiesen, daß eine weitere zylindrische Anformung an den Träger angeformt ist und daß eine weitere Drehfeder vorgesehen ist, deren erstes Ende an dieser Anformung festgelegt ist und deren freier Schenkel sich am Abschnitt der Klinkenauflage ansetzt.It has proven to be favorable that a further cylindrical molding on the carrier is integrally formed and that a further torsion spring is provided, the first end of which Forming is fixed and the free leg is on the section of the jack support starts.

Mittels dieser weiteren Drehfeder wird die Schulter der Klinkenauflage in Richtung der Klinke bewegt, womit nach einer Auslösung die Klinke wieder mit der Schulter der Klinkenauflage verrasten kann. Damit ist eine Wiedereinschaltung der Schaltmechanik mit Hilfe des Betätigungshebels ermöglicht.By means of this further torsion spring, the shoulder of the pawl support is in the direction of The handle moves, so that after a release the handle with the shoulder of the Can latch latch. This means that the switching mechanism is switched on again With the help of the operating lever.

Die Erfindung wird unter Bezugnahme auf die beigeschlossenen Zeichnungen, in welchen ein besonders bevorzugtes Ausführungsbeispiel dargestellt ist, näher beschrieben. Dabei zeigt:

  • Fig. 1 einen zweipoligen Leitungsschutzschalter im Schrägriß;
  • Fig.2 die Phasenleiter-Schaltstrecke eines mit einer erfindungsgemäßen Schaltmechanik 15 ausgestatteten Leitungsschutzschalter im eingeschalteten Zustand im Grundriß;
  • Fig.3 die Phasenleiter-Schaltstrecke des Leitungsschutzschalters der Fig.2 in derselben Darstellung im ausgeschalteten Zustand im Grundriß;
  • Fig.4 eine Explosionszeichnung der erfindungsgemäßen Schaltmechanik 15;
  • Fig.5 und 6 den Träger 17 einer erfindungsgemäßen Schaltmechanik 15 mit aufgesetzten Schaltbrücken 9,9' im Schrägriß, jeweils aus einem unterschiedlichen Betrachtungswinkel und
  • Fig.7 das in Fig.5,6 Dargestellte bei Betrachtung in Richtung der Mechanik-Drehachse 16.
    • The invention is described in more detail with reference to the accompanying drawings, in which a particularly preferred embodiment is shown. It shows:
  • Figure 1 shows a two-pole circuit breaker in oblique view.
  • 2 shows the phase conductor switching path of a circuit breaker equipped with a switching mechanism 15 according to the invention in the switched-on state in plan view;
  • 3 shows the phase conductor switching path of the circuit breaker of Figure 2 in the same representation in the off state in plan;
  • 4 shows an exploded view of the switching mechanism 15 according to the invention;
  • 5 and 6 the carrier 17 of a switching mechanism 15 according to the invention with attached switching bridges 9, 9 'in oblique view, in each case from a different viewing angle and
  • 7 that shown in FIG. 5, 6 when viewed in the direction of the mechanical axis of rotation 16.

    • In Fig. 1 ist das Gehäuse eines Leitungsschutzschalters dargestellt, welcher zwei Schaltstrecken, nämlich eine für den Phasenleiter L eines einphasigen Wechselstromkreises und eine für den zugehörigen Neutralleiter N aufweist.In Fig. 1, the housing of a circuit breaker is shown, which two Switching paths, namely one for the phase conductor L of a single-phase AC circuit and one for the associated neutral conductor N.

    Jede dieser Schaltstrecken umfaßt eine Anschlußklemme 2 für die Zuleitung und eine Anschlußklemme 3 für die Ableitung (vgl. Fig.3). Mit der ersten Anschlußklemme 2 ist eine Stromschiene 4 verbunden, die an das erste Wicklungsende eines Schlagankerauslösers 5 angeschlossen ist. Das zweite Wicklungsende des Schlagankerauslösers 5 ist mit einer weiteren Stromschiene 6 verbunden, welche einen feststehenden Kontakt 7 trägt.Each of these switching paths comprises a connecting terminal 2 for the supply line and one Terminal 3 for the discharge (see Fig. 3). With the first terminal 2 is one Busbar 4 connected to the first winding end of an impact armature 5th connected. The second winding end of the anchor trigger 5 is with a connected to further busbar 6, which carries a fixed contact 7.

    Der im eingeschalteten Zustand auf diesem feststehenden Kontakt 7 anliegende bewegliche Kontakt 8 ist auf einer Schaltbrücke 9 festgelegt. Diese Schaltbrücke 9 steht über ein flexibles Leiterseil 10 mit dem freien Ende eines Bimetallstreifens 11 in Verbindung. Das unbeweglich gegenüber dem Gehäuse gehaltene zweite Ende dieses Bimetallstreifens 11 ist über eine Stromschiene 12 mit der zweiten Anschlußklemme 3 verbunden. Diese Stromschiene 12 ist mit einem Funkenhorn 13 verbunden, welches mit der Stromschiene 6 eine an die Kontakte 7,8 anschließende Funkenlaufstrecke bildet, in deren Endbereich eine Funkenlöschkammer 14, bestehend aus einer Vielzahl zueinander paralleler Löschbleche, angeordnet ist.The movable contact resting on this fixed contact 7 when switched on Contact 8 is fixed on a switching bridge 9. This switching bridge 9 is flexible Conductor rope 10 with the free end of a bimetallic strip 11 in connection. That immobile relative to the housing held second end of this bimetallic strip 11 is via a Busbar 12 connected to the second terminal 3. This busbar 12 is connected to a spark horn 13, which with the busbar 6 one to the contacts 7.8 adjoining spark gap forms a spark quenching chamber in the end area 14, consisting of a plurality of mutually parallel quenching plates, is arranged.

    In dieser Löschkammer 14 werden Lichtbögen gelöscht, die beim Öffnen der Kontakte 7,8 in einem vom Nulldurchgang verschiedenen Zeitpunkt zwischen diesen entstehen und entlang der Stromschiene 6 und dem Funkenhorn 13 in die Löschkammer 14 hineinlaufen.Arcs are extinguished in this quenching chamber 14, which 7.8 in when the contacts open at a different time from the zero crossing between them and along the busbar 6 and the spark horn 13 run into the extinguishing chamber 14.

    Schlagankerauslöser 5 und Bimetallstreifen 11 sind vom Strom des an diese Schaltstrecke angeschlossenen Phasenleiters durchflossen und dienen zur Überwachung der Höhe dieses Stromes. Beide Bauteile wirken bei Vorliegen einer unzulässigen Höhe dieses Stromes auf eine Schaltmechanik 15 ein und können somit eine Abschaltung des Schutzschalters, also ein Abheben des beweglichen Kontaktes 8 vom feststehenden Kontakt 7 einleiten, welche Abschaltung von der Schaltmechanik 15 durchgeführt wird.Anchor trigger 5 and bimetallic strip 11 are from the current to this switching path connected phase conductor and are used to monitor the height of this Current. Both components act when there is an impermissible amount of this current a switching mechanism 15 and can thus turn off the circuit breaker, that is Lift off the movable contact 8 from the fixed contact 7, which initiate Shutdown is carried out by the switching mechanism 15.

    Dabei dient der Schlagankerauslöser 5 in an sich bekannter Weise zur Detektion eines kurzfristig auftretenden, den Nennwert um ein Vielfaches übersteigenden (Kurzschluß-)Stromes und der Bimetallauslöser 11 zur Detektion eines nur wenig über dem Nennwert liegenden, aber längere Zeit anstehenden (Überlast-)Stromes.The striking anchor trigger 5 is used in a manner known per se to detect a short-term (short-circuit) current that exceeds the nominal value by a multiple and the bimetallic trigger 11 for detection of just a little above the nominal value current that is present for a long time (overload).

    Die in den Zeichnungsfiguren nicht näher dargestellte Schaltstrecke des Neutralleiters N ist so aufgebaut, wie die eben erörterte Phasenleiter-Schaltstrecke, sie weist aber keinen Schlagankerauslöser und keinen Bimetallstreifen auf, der sie durchfließende Strom wird also nicht überwacht. Die Schaltbrücke 9' der Neutralleiter-Schaltstrecke wird aber gemeinsam mit der Schaltbrücke 9 der Phasenleiter-Schaltstrecke bewegt, sodaß die Neutralleiter-Schaltstrecke stets mit der Phasenleiter-Schaltstrecke mitgeschaltet wird.The switching path of the neutral conductor N, which is not shown in the drawing figures, is so constructed like the phase conductor switching path just discussed, but it has none Anchor trigger and no bimetallic strip, so the current flowing through it not monitored. The switching bridge 9 'of the neutral conductor switching path is common moved with the switching bridge 9 of the phase conductor switching path, so that the neutral conductor switching path is always switched with the phase conductor switching path.

    Das Gehäuse des Leitungsschutzschalters ist trotzdem zwei vollwertige Schaltstrecken in ihm untergebracht sind, nur eine Teilungseinheit (18mm) breit ausgeführt.The housing of the circuit breaker is still two full switching paths in it are housed, only one division unit (18mm) wide.

    Die vorliegende Erfindung bezieht sich auf die konstruktive Ausgestaltung der Schaltmechanik 15. Diese umfaßt zunächst die beiden Schaltbrücken 9,9' der beiden Schaltstrecken des Schutzschalters, welche jeweils einen beweglichen Kontakt 8,8' tragen. The present invention relates to the structural design of the Switching mechanism 15. This first includes the two switching bridges 9,9 'of the two Switching paths of the circuit breaker, each of which carries a movable contact 8,8 '.

    Daneben weist die Schaltmechanik 15 drei Hauptbauteile, nämlich den Träger 17, die Klinkenauflage 29 und die Klinke 33 auf (vgl. Fig.4).In addition, the switching mechanism 15 has three main components, namely the carrier 17, the Pawl support 29 and the pawl 33 (see Fig. 4).

    Der Träger 17 ist um eine gehäusefeste Mechanik-Drehachse 16 verschwenkbar im Gehäuse gelagert, was in der Form realisiert ist, daß im Gehäuse ein Stift festgelegt ist und der Träger 17 eine dem Außendurchmesser dieses Stiftes entsprechende Bohrung aufweist, mit welcher er über diesen Stift gesteckt ist. Der Träger 17 weist eine zur Mechanik-Drehachse 16 normal verlaufende Zwischenwandung 18 auf, an deren beiden Seitenflächen einige Bauteile, nämlich Zylinder 19,19', Anlageanschläge 26,26' sowie Schenkelauflagen 25,25' angeformt sind.The carrier 17 is pivotable about a mechanical axis of rotation 16 in the housing stored, which is realized in the form that a pin is fixed in the housing and the carrier 17 has a bore corresponding to the outer diameter of this pin, with which it is stuck over this pen. The carrier 17 has a normal to the mechanical axis of rotation 16 extending intermediate wall 18, on the two side surfaces of some components, namely, cylinders 19, 19 ', contact stops 26, 26' and leg supports 25, 25 'are formed are.

    Die Zylinder 19,19' dienen zur drehbaren Lagerung der Schaltbrücken 9,9' am Träger 17, bilden also Schaltbrücken-Drehachsen 36. Die Schaltbrücken 9,9' sind mit Bohrungen 20,20' versehen, deren Durchmesser den Außendurchmessern der Zylinder 19 entsprechen. Die Schaltbrücken 9,9' sind mit diesen Bohrungen 20,20' auf die Zylinder 19 aufgesetzt (vgl. Fig.5,6).The cylinders 19, 19 'serve for the rotatable mounting of the switching bridges 9, 9' on the carrier 17, thus form switching bridge axes of rotation 36. The switching bridges 9,9 'are with holes 20,20' provided whose diameter corresponds to the outer diameter of the cylinder 19. The Switching bridges 9, 9 'are placed on the cylinders 19 with these bores 20, 20' (cf. Fig. 5,6).

    Die Anlageanschläge 26,26' haben vorzugsweise ebenfalls zylindrische Gestalt und sind mit Abstand von den Zylindern 19,19' und konzentrisch zur Mechanik-Drehachse 16 an die Zwischenwandung 18 angeformt. Die Schaltbrücken-Drehachsen 36 sind damit in Richtung der beweglichen Kontakte 8,8' versetzt gegenüber der Mechanik-Drehachse 16 angeordnet.The abutment stops 26, 26 'preferably also have a cylindrical shape and are with Distance from the cylinders 19, 19 'and concentric to the mechanical axis of rotation 16 at the Partition 18 integrally formed. The switching bridge axes of rotation 36 are thus in the direction the movable contacts 8, 8 'are arranged offset from the mechanical axis of rotation 16.

    Die Schaltbrücken 9,9' sind durch die Drehfedern 21,21' ständig in Richtung der Anlageanschläge 26,26' belastet bzw. werden mit ihren, den beweglichen Kontakten 8,8' gegenüberliegenden Enden 90,90' elastisch an diese Anlageanschläge 26,26' angedrückt. Zu diesem Zweck sind diese Drehfedern 21,21' mit ihren Windungen 22,22' auf die Zylinder 19,19' aufgesetzt, ihre ersten Schenkel 23,23' liegen im Bereich der beweglichen Kontakte 8,8' an den Schaltbrücken 9,9' und ihre zweiten Schenkel 24,24' liegen an den Schenkelauflagen 25,25' an (vgl. Fig.3).The switching bridges 9,9 'are constantly in the direction of the torsion springs 21,21' System stops 26.26 'are loaded or with their movable contacts 8.8' opposite ends 90.90 'elastically pressed against these abutments 26.26'. To For this purpose, these torsion springs 21, 21 'with their windings 22, 22' are on the cylinders 19,19 'placed, their first legs 23,23' are in the area of the movable contacts 8.8 'on the switching bridges 9.9' and their second legs 24.24 'are on the Leg supports 25, 25 '(see Fig. 3).

    Die Schaltbrücken 9,9' weisen genau dieselben Abmessungen auf, sind also deckungsgleich ausgeführt. Die Anlageanschläge 26,26' sind zwar fluchtend zueinander und konzentrisch zur Mechanik-Drehachse 16 angeordnet, ihre Stärken bzw. Durchmesser sind aber insofern voneinander verschieden, als der Durchmesser des der Neutralleiter-Schaltstrecke zugeordneten Anlageanschlages 26' kleiner als der Durchmesser des der Phasenleiter-Schaltstrecke zugeordneten Anlageanschlages 26 ist (vgl. Fig.6). Daraus ergibt sich, daß die beiden beweglichen Kontakte 8,8' bei Betrachtung der Schaltmechanik 15 in Richtung der Mechanik-Drehachse 16 ―im von den feststehenden Kontakten 7,7' abgehobenen Zustandzueinander um den Betrag a winkelversetzt sind (vgl. Fig.7).The switching bridges 9,9 'have exactly the same dimensions, so they are congruent executed. The system stops 26, 26 'are in alignment with one another and concentric with the Mechanism axis of rotation 16 arranged, but their strengths or diameters are so far different from each other than the diameter of the neutral conductor switching path assigned system stop 26 'smaller than the diameter of the phase conductor switching path assigned system stop 26 (see FIG. 6). It follows that the two movable contacts 8,8 'when looking at the switching mechanism 15 in the direction of Mechanical axis of rotation 16 ― in the state lifted from the fixed contacts 7, 7 'to one another are angularly offset by the amount a (see Fig. 7).

    Dieser Winkelversatz führt dazu, daß beim Übergang der Schaltmechanik von ihrem in Fig.3 dargestellten geöffneten Zustand in den in Fig.2 dargestellten geschlossenen Zustand zunächst nur die Neutralleiter-Schaltstrecke, die Phasenleiter-Schaltstrecke hingegen erst etwas später geschlossen wird. Diese Voreilung der Neutralleiter-Schaltstrecke ist gemäß den auf Schutzschalter anzuwendenden Normen zwingend vorzusehen.This angular offset leads to the fact that when the switching mechanism changes from its one shown in FIG shown open state in the closed state shown in Fig.2 initially only the neutral conductor switching path, the phase conductor switching path, however, only a little later is closed. This advance of the neutral conductor switching distance is according to the It is essential to provide the circuit breaker with the applicable standards.

    Zur Bewegung des Trägers 17 bzw. der auf ihm festgelegten Schaltbrücken 9,9' sind die übrigen Komponenten der Schaltmechanik 15 notwendig: For the movement of the carrier 17 or the switching bridges 9, 9 'fixed on it are the other components of the switching mechanism 15 necessary:

    Die mit 29 bezeichnete Klinkenauflage weist eine Bohrung 30 auf, mit welcher sie auf den Anlageanschlag 26 aufgesetzt und somit drehbar am Träger 17 gelagert ist.The pawl support designated 29 has a bore 30 with which it on the System stop 26 is placed and thus rotatably mounted on the carrier 17.

    Im Bereich des oberen Endes der Zwischenwandung 18 weist diese Klinkenauflage 29 eine Schulter 31 auf, an welchem sich eine Klinke 33 ansetzen kann.In the area of the upper end of the intermediate wall 18, this pawl support 29 has a Shoulder 31 on which a pawl 33 can attach.

    Diese Klinke 33 ist ein U-förmiger, vorzugsweise aus einem dünnen Blech gebogener Bauteil, der in seinen Schenkeln Bohrungen 38 zur Aufnahme eines Hohlnietes 39 aufweist. Im oberen Ende der Zwischenwandung 18 des Trägers 17 ist ebenfalls eine Bohrung 40 eingebracht, durch welche der Hohlniet 39 hindurchgeführt wird. Die Klinke 33 wird damit am oberen Ende der Zwischenwandung 18 um eine Klinken-Drehachse 32 drehbar gelagert.This pawl 33 is a U-shaped component, preferably bent from a thin sheet, which has holes 38 in its legs for receiving a hollow rivet 39. in the The upper end of the intermediate wall 18 of the carrier 17 is also a bore 40 introduced through which the hollow rivet 39 is passed. The pawl 33 is thus at the upper end of the intermediate wall 18 rotatably mounted about a pawl axis of rotation 32.

    Die Klinke 33 weist an ihrem den Bohrungen 38 gegenüberliegenden Ende einen Vorsprung 37 auf, der sich an der Schulter 31 ansetzen kann. Ist -wie in Fig.2 und 3 dargestellt- die Klinke 33 derart mit der Klinkenauflage 29 verrastet, sind die drei Hauptbauteile der Schaltmechanik 15 (Träger 17, Klinkenauflage 29 und Klinke 33) formschlüssig miteinander verbunden und die Schaltmechanik 15 kann mithilfe des Betätigungshebels 35, der über einen Bügel 34 mit der Klinke 33 gekuppelt ist, bewegt, d.h. von ihrer EIN-Stellung (Fig.2) in ihre AUS-Stellung (Fig.3) und umgekehrt verschwenkt werden.The pawl 33 has a projection at its end opposite the bores 38 37 on who can sit on the shoulder 31. Is - as shown in Fig. 2 and 3 - the Pawl 33 locked in this way with the pawl support 29, the three main components of the Switch mechanism 15 (carrier 17, pawl support 29 and pawl 33) form-fitting with each other connected and the switching mechanism 15 can by means of the actuating lever 35, which has a Bracket 34 is coupled to the pawl 33, moved, i.e. from their ON position (Fig. 2) to their OFF position (Fig. 3) and vice versa.

    Bei der Verschwenkung in die EIN-Stellung kommen die beweglichen Kontakte 8,8' (zeitlich versetzt) an den feststehenden Kontakten 7,7' zur Anlage. Da ab diesem Zeitpunkt eine weitere, synchron mit dem Träger 17 erfolgende Verschwenkung der beweglichen Kontakte 8,8' verhindert wird, werden die Kontaktbrücken 9,9' gegen den Druck der Drehfedern 21,21' entgegen der Träger-Verschwenkrichtung verdreht und dabei von den Anlageanschlägen 26,26' abgehoben (vgl. Fig.2).When pivoting into the ON position, the movable contacts 8,8 '(in time offset) on the fixed contacts 7,7 'to the system. Since from this point on further pivoting of the movable contacts in synchronization with the carrier 17 8.8 'is prevented, the contact bridges 9.9' against the pressure of the torsion springs 21.21 ' rotated against the beam pivoting direction and thereby from the system stops 26, 26 'lifted off (see Fig. 2).

    Dabei werden die beweglichen Kontakte 8,8' radial gegenüber den feststehenden Kontakten 7,7' verschoben, wobei die Kontaktflächen der feststehenden 7,7' und der beweglichen Kontakte 8,8' aneinander gerieben und dort befindliche Verunreinigungen entfernt werden.The movable contacts 8, 8 'become radial with respect to the fixed contacts 7.7 'shifted, the contact surfaces of the fixed 7.7' and the movable Contacts 8.8 'rubbed against each other and contaminants located there are removed.

    Tritt ein unzulässiger und deshalb abzuschaltender Fehlerstrom auf, so wirkt der jeweils zuständige Fehlerstrom-Detektionsbauteil (Schlagankerauslöser 5 oder Bimetallstreifen 11) auf den unterhalb der Bohrung 30 liegenden Abschnitt 41 der Klinkenauflage 29 ein: Der Schlaganker 50 des Schlagankerauslösers 5 wird direkt auf diesen Abschnitt 41 angeschlagen; das freie, sich bei unzulässiger Erwärmung durch unzulässig hohen Dauerstrom in Richtung der zweiten Anschlußklemme 3 bewegende Ende des Bimetallstreifens 11 nimmt einen Zugbügel 42 mit, der über einen Rohrniet 43 mit dem Abschnitt 41 verbunden ist.If an inadmissible fault current that must therefore be switched off occurs, it will take effect Competent residual current detection component (impact armature trigger 5 or bimetallic strip 11) on the section 41 of the jack support 29 lying below the bore 30: the Impact anchor 50 of the impact anchor trigger 5 is struck directly on this section 41; the free, in the event of impermissible heating due to impermissibly high continuous current in the direction the second terminal 3 moving end of the bimetallic strip 11 takes one Drawbar 42 with which is connected to section 41 via a tubular rivet 43.

    In beiden Fällen wird die Klinkenauflage 29 um die Mechanik-Drehachse 16 geringfügig gegen den Uhrzeigersinn verschwenkt, wodurch die Schulter 31 außer Eingriff mit dem Klinkenvorsprung 37 gebracht wird. Damit ist die formschlüssige Verbindung zwischen Klinke 33, Träger 17 und Klinkenauflage 29 bzw. dieser drei Bauteile mit dem Betätigungshebel 35 gelöst, sodaß der Träger 17 und mit ihm die Schaltbrücken 9,9' in die AUS-Stellung verschwenkt werden können.In both cases, the pawl support 29 about the mechanical axis of rotation 16 is slight pivoted counterclockwise, causing the shoulder 31 out of engagement with the Jack projection 37 is brought. This is the positive connection between Pawl 33, support 17 and pawl support 29 or these three components with the Operating lever 35 released, so that the carrier 17 and with it the switching bridges 9,9 'in the OFF position can be pivoted.

    Diese Verschwenkung wird von einer Schraubendruckfeder 28 ausgeführt, deren erstes Ende auf einen Zapfen 27 aufgesetzt ist, der am den Zylindern 19,19' gegenüberliegenden oberen Ende der Zwischenwandung 18 des Trägers 17 angeformt ist. Das zweite Ende dieser Schraubendruckfeder 28 ist am Gehäuse abgestützt.This pivoting is carried out by a helical compression spring 28, the first end of which is placed on a pin 27, the upper on the cylinders 19, 19 'opposite End of the intermediate wall 18 of the carrier 17 is formed. The second end of this Helical compression spring 28 is supported on the housing.

    An einer weiteren zylindrischen Anformung 44 des Trägers 17 ist das erste Ende einer weiteren Drehfeder 45 festgelegt. Ihr freier Schenkel 46 setzt sich am Abschnitt 41 der Klinkenauflage 29 an, womit die Klinkenauflage 29 von dieser Drehfeder 45 im Uhrzeigersinn vorgespannt wird. Diese Vorspannung bewirkt, daß nachdem die Verrastung von Klinkenvorsprung 37 und Schulter 31 gelöst worden ist, die Klinkenauflage 29 gegen den Uhrzeigersinn verschwenkt und damit die Schulter 31 auf die Klinke 33 zu bewegt wird. Sobald der Betätigungshebel 35 in die AUS-Stellung gebracht worden ist (was automatisch durch eine in ihm eingebaute Feder erfolgt), kann damit der Klinkenvorsprung 37 wieder zur Anlage an der Schulter 31 kommen.On a further cylindrical projection 44 of the carrier 17, the first end is one another torsion spring 45 set. Your free leg 46 sits on section 41 of the Pawl support 29, whereby the pawl support 29 from this torsion spring 45 in Is biased clockwise. This bias causes that after the latching of latch projection 37 and shoulder 31 has been released, the latch support 29 against the Pivoted clockwise and thus the shoulder 31 is moved towards the pawl 33. As soon as the operating lever 35 has been brought into the OFF position (which is automatic by a spring built into it), so that the pawl projection 37 can again System come on shoulder 31.

    Claims (4)

    Schaltmechanik (15) für einen Schutzschalter, der zwei gemeinsam zu schaltende Schaltstrecken hat, welche jeweils einen beweglichen, auf einer Schaltbrücke (9,9') festgelegten Kontakt (8,8') aufweisen, wobei ein um eine gehäusefeste Mechanik-Drehachse (16) verschwenkbar gelagerter Träger (17) vorgesehen ist, der
    eine normal zur Mechanik-Drehachse (16) verlaufende Zwischenwandung (18) aufweist, an deren beiden Seitenflächen jeweils ein Zylinder (19,19'), ein zur Mechanik-Drehachse (16) konzentrischer Anlageanschlag (26,26') sowie eine Schenkelauflage (25,25') angeformt ist, auf welche Zylinder (19,19') die Schaltbrücken (9,9') mit ihren Bohrungen (20,20') sowie Drehfedern (21,21') mit ihren Windungen (22,22') aufgesetzt sind, sodaß die Längsachsen der Zylinder (19,19') Schaltbrücken-Drehachsen (36) bilden, wobei die ersten Schenkel (23,23') der Drehfedern (21,21') an den Schaltbrücken (9,9') und die zweiten Schenkeln (24,24') an den Schenkelauflagen (25,25') anliegen, womit die Schaltbrücken (9,9') ständig in Richtung der voneinander verschiedene Stärken aufweisenden Anlageanschlägen (26,26') belastet sind, wobei am den Zylindern (19,19') gegenüberliegenden oberen Ende der Zwischenwandung (18) ein Zapfen (27) angeformt ist, auf welchen das erste Ende einer Schraubendruckfeder (28) aufgesetzt ist, dessen zweites Ende am Gehäuse abgestützt ist, wobei weiters     eine Klinkenauflage (29) vorgesehen ist, die mit ihrer Bohrung (30) auf den Anlageanschlag (26) aufgesetzt ist und im Bereich des oberen Endes der Zwischenwandung (18) eine Schulter (31) aufweist, an der ein Vorsprung (37) einer Klinke (33) eingreifen kann, welche Klinke (33) am oberen Ende der Zwischenwandung (18) um eine Klinken-Drehachse (32) drehbar gelagert ist und wobei     ein Bügel (34) vorgesehen ist, der die Klinke (33) mit einem Betätigungshebel (35) kuppelt, dadurch gekennzeichnet, daß
    die Schaltbrücken-Drehachsen (36) in Richtung der beweglichen Kontakte (8,8') versetzt gegenüber der Mechanik-Drehachse (16) angeordnet sind.    Switching mechanism (15) for a circuit breaker which has two switching paths to be switched together, each of which has a movable contact (8,8 ') fixed on a switching bridge (9,9'), whereby a support (17) which is mounted so as to be pivotable about a mechanical axis of rotation (16) is provided which
    has an intermediate wall (18) running normal to the mechanical axis of rotation (16), A cylinder (19, 19 '), an abutment stop (26, 26') concentric to the mechanical axis of rotation (16) and a leg support (25, 25 ') are formed on each of the two side surfaces, onto which cylinders (19, 19' ) the switching bridges (9,9 ') with their bores (20,20') and torsion springs (21,21 ') with their windings (22,22') are placed, so that the longitudinal axes of the cylinders (19,19 ') switching bridges - Form axes of rotation (36), the first legs (23, 23 ') of the torsion springs (21, 21') on the switching bridges (9, 9 ') and the second legs (24, 24') on the leg supports (25, 25 '), with which the switching bridges (9,9') are constantly loaded in the direction of the system stops (26, 26 ') which have different strengths, whereby a pin (27) is formed on the upper end of the intermediate wall (18) opposite the cylinders (19, 19 '), on which the first end of a helical compression spring (28) is placed, the second end of which is supported on the housing, furthermore     a pawl support (29) is provided which is placed with its bore (30) on the abutment stop (26) and has a shoulder (31) in the area of the upper end of the intermediate wall (18) on which a projection (37) of a pawl (33) can engage which pawl (33) is rotatably mounted at the upper end of the intermediate wall (18) about a pawl axis of rotation (32) and wherein     a bracket (34) is provided which couples the pawl (33) with an actuating lever (35), characterized in that
    the switching bridge axes of rotation (36) in the direction of the movable contacts (8,8 ') are arranged offset from the mechanical axis of rotation (16).         Schaltmechanik nach Anspruch 1, dadurch gekennzeichnet, daß die Anlageanschläge (26,26') als von den Schenkelauflagen (25,25') verschiedene, voneinander beabstandete Bauteile ausgebildet sind. Switching mechanism according to claim 1, characterized in that the contact stops (26, 26 ') are designed as components which are spaced apart from one another and which are different from the leg supports (25, 25'). Schaltmechanik nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Klinken-Drehachse (32) beabstandet von den Anlageanschlägen (26,26') und den Schenkelauflagen (25,25') angeordnet ist.Switch mechanism according to claim 1 or 2, characterized in that the pawl axis of rotation (32) is arranged at a distance from the abutment stops (26, 26 ') and the leg supports (25, 25'). Schaltmechanik nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß eine weitere zylindrische Anformung (44) an den Träger (17) angeformt ist und daß eine weitere Drehfeder (45) vorgesehen ist, deren erstes Ende an dieser Anformung (44) festgelegt ist und deren freier Schenkel (46) sich am Abschnitt (41) der Klinkenauflage (29) ansetzt.Switching mechanism according to one of claims 1 to 3, characterized in that a further cylindrical projection (44) is formed on the carrier (17) and that a further torsion spring (45) is provided, the first end of which is fixed to this projection (44) and whose free leg (46) attaches to the section (41) of the pawl support (29).
    EP00890116A 2000-04-11 2000-04-11 Switching mechanism for a circuit breaker Expired - Lifetime EP1146534B1 (en)

    Priority Applications (7)

    Application Number Priority Date Filing Date Title
    ES00890116T ES2170047T3 (en) 2000-04-11 2000-04-11 SWITCHING MECHANISM FOR A Circuit Breaker.
    PT00890116T PT1146534E (en) 2000-04-11 2000-04-11 CUTTING MECHANISM FOR PROTECTION CIRCUIT BREAKERS
    DE50000092T DE50000092D1 (en) 2000-04-11 2000-04-11 Switching mechanism for a circuit breaker
    EP00890116A EP1146534B1 (en) 2000-04-11 2000-04-11 Switching mechanism for a circuit breaker
    AT00890116T ATE211581T1 (en) 2000-04-11 2000-04-11 SWITCHING MECHANICAL FOR A CIRCUIT BREAKER
    SI200030010T SI1146534T1 (en) 2000-04-11 2000-04-11 Switching mechanism for a circuit breaker
    DK00890116T DK1146534T3 (en) 2000-04-11 2000-04-11 Switching mechanism for a safety switch

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP00890116A EP1146534B1 (en) 2000-04-11 2000-04-11 Switching mechanism for a circuit breaker

    Publications (2)

    Publication Number Publication Date
    EP1146534A1 true EP1146534A1 (en) 2001-10-17
    EP1146534B1 EP1146534B1 (en) 2002-01-02

    Family

    ID=8175927

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00890116A Expired - Lifetime EP1146534B1 (en) 2000-04-11 2000-04-11 Switching mechanism for a circuit breaker

    Country Status (7)

    Country Link
    EP (1) EP1146534B1 (en)
    AT (1) ATE211581T1 (en)
    DE (1) DE50000092D1 (en)
    DK (1) DK1146534T3 (en)
    ES (1) ES2170047T3 (en)
    PT (1) PT1146534E (en)
    SI (1) SI1146534T1 (en)

    Cited By (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2005069332A1 (en) * 2004-01-19 2005-07-28 Abb Oy Switching device provided with neutral conductor
    NL1027343C2 (en) * 2004-10-26 2006-04-27 Eaton Electric Nv Switch is for breaking current circuit and comprises housing with mechanical switch assembly for operation of contacts, short circuit current protection device for breaking current circuit in event of sudden very high circulating current
    FR2956922A1 (en) * 2010-03-01 2011-09-02 Schneider Electric Ind Sas CUTTING DEVICE
    EP4040464A1 (en) * 2021-02-09 2022-08-10 Schneider Electric Industries SAS Dc circuit breaker
    RU2800141C1 (en) * 2021-02-09 2023-07-19 Шнейдер Электрик Эндюстри Сас Dc circuit breaker

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2571365A (en) * 2018-02-23 2019-08-28 Eaton Intelligent Power Ltd Electrical Switchgear

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    US4882557A (en) * 1987-11-13 1989-11-21 Airpax Corporation Multipole circuit breaker system with differential pole operation
    EP0412953A2 (en) * 1989-08-08 1991-02-13 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Automatic cut-out switch
    EP0569651A1 (en) * 1992-05-13 1993-11-18 Hager Electro S.A. Assembling process for phase/neutral conductor circuit breakers and circuit breaker of that kind
    EP0570647A1 (en) * 1992-05-13 1993-11-24 Hager Electro S.A. Switch latch for a circuit breaker and circuit breakers incorporating it
    EP0577586A1 (en) * 1992-06-29 1994-01-05 Felten & Guilleaume Austria Ag Automatic circuit breaker
    EP0639845A1 (en) * 1993-08-17 1995-02-22 Schneider Electric Sa Four pole differential circuit breaker
    EP0696041A1 (en) * 1994-08-04 1996-02-07 Legrand Cut out

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    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4882557A (en) * 1987-11-13 1989-11-21 Airpax Corporation Multipole circuit breaker system with differential pole operation
    EP0412953A2 (en) * 1989-08-08 1991-02-13 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Automatic cut-out switch
    EP0569651A1 (en) * 1992-05-13 1993-11-18 Hager Electro S.A. Assembling process for phase/neutral conductor circuit breakers and circuit breaker of that kind
    EP0570647A1 (en) * 1992-05-13 1993-11-24 Hager Electro S.A. Switch latch for a circuit breaker and circuit breakers incorporating it
    EP0577586A1 (en) * 1992-06-29 1994-01-05 Felten & Guilleaume Austria Ag Automatic circuit breaker
    EP0639845A1 (en) * 1993-08-17 1995-02-22 Schneider Electric Sa Four pole differential circuit breaker
    EP0696041A1 (en) * 1994-08-04 1996-02-07 Legrand Cut out

    Cited By (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2005069332A1 (en) * 2004-01-19 2005-07-28 Abb Oy Switching device provided with neutral conductor
    US7777139B2 (en) 2004-01-19 2010-08-17 Abb Oy Switching device provided with neutral conductor
    NL1027343C2 (en) * 2004-10-26 2006-04-27 Eaton Electric Nv Switch is for breaking current circuit and comprises housing with mechanical switch assembly for operation of contacts, short circuit current protection device for breaking current circuit in event of sudden very high circulating current
    FR2956922A1 (en) * 2010-03-01 2011-09-02 Schneider Electric Ind Sas CUTTING DEVICE
    EP2365510A1 (en) * 2010-03-01 2011-09-14 Schneider Electric Industries SAS Circuit breaker
    RU2549366C2 (en) * 2010-03-01 2015-04-27 Шнейдер Электрик Эндюстри Сас Distribution device
    EP4040464A1 (en) * 2021-02-09 2022-08-10 Schneider Electric Industries SAS Dc circuit breaker
    RU2800141C1 (en) * 2021-02-09 2023-07-19 Шнейдер Электрик Эндюстри Сас Dc circuit breaker

    Also Published As

    Publication number Publication date
    ATE211581T1 (en) 2002-01-15
    SI1146534T1 (en) 2002-06-30
    ES2170047T3 (en) 2002-08-01
    EP1146534B1 (en) 2002-01-02
    PT1146534E (en) 2002-07-31
    DE50000092D1 (en) 2002-02-28
    DK1146534T3 (en) 2002-04-22

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