EP1346388A1 - Disjoncteur dote d'un dispositif de contact a interruption double - Google Patents

Disjoncteur dote d'un dispositif de contact a interruption double

Info

Publication number
EP1346388A1
EP1346388A1 EP01271945A EP01271945A EP1346388A1 EP 1346388 A1 EP1346388 A1 EP 1346388A1 EP 01271945 A EP01271945 A EP 01271945A EP 01271945 A EP01271945 A EP 01271945A EP 1346388 A1 EP1346388 A1 EP 1346388A1
Authority
EP
European Patent Office
Prior art keywords
contact
circuit breaker
current
breaker according
arc
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.)
Withdrawn
Application number
EP01271945A
Other languages
German (de)
English (en)
Inventor
Tudor Baiatu
Elio Iacovino
Manfred Stania
Willy Schwarz
Werner Balsiger
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.)
ABB Schweiz AG
Original Assignee
ABB Schweiz AG
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
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to EP01271945A priority Critical patent/EP1346388A1/fr
Publication of EP1346388A1 publication Critical patent/EP1346388A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/121—Protection of release mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc

Definitions

  • the invention is based on a circuit breaker according to the preamble of patent claim 1.
  • a circuit breaker has a current path with two current connections and with a double-interrupting contact arrangement.
  • the contact arrangement contains two contact systems connected in series, each with two contact pieces movable relative to one another.
  • the current path runs in two mutually parallel sections. During a switching operation, these sections are each formed by a switching arc burning between the contact pieces.
  • the switch can be used as a miniature circuit breaker in low-voltage distributors and is characterized by a large breaking capacity and a quick response in small dimensions.
  • a switch of the aforementioned type is described, for example, in CH 543 174 A and also in EP 619 592 A.
  • the switch described has a cuboid housing in which, in addition to a double-interrupting contact arrangement, two connection terminals and a trigger mechanism with a drive and a trigger are accommodated.
  • the contact arrangement contains two contact systems arranged side by side, which are connected in series in a current path of the switch running between the two connection terminals.
  • the contact systems each contain a fixed and a movable contact piece.
  • the movable contact pieces are attached to a bridge contact carrier.
  • the current path has two sections in the two contact systems with opposite directions of the current. In a switching operation, therefore, two form in opposite directions Switching current flows through switching arcs, which repel each other. If the two arcs do not run at the same speed, the slower arc is repelled by the faster moving arc and is possibly prevented from reaching the arc extinguishing plates which favor the arc extinguish
  • the invention is based on the object of developing the circuit breaker of the type mentioned at the outset in such a way that it can also switch off large short-circuit currents with a high degree of certainty while maintaining its dimensions.
  • the contact pieces of the two contact systems are connected to one another and to the two power connections in such a way that the current in both contact systems has the same sense of direction. This ensures that when switching off, the switching arcs formed in the two contact systems are flowed through in the same direction by the cut-off current. The two switching arcs therefore no longer repel each other, but attract each other. A shift of the switching arcs relative to one another is thus avoided. The two arcs now run with great certainty synchronously in arc quenching chambers and are extinguished there practically at the same time.
  • the circuit breaker according to the invention is therefore characterized by a large switching capacity.
  • the contact systems each have one of two quenching chambers, which are arranged side by side to one another, is characterized by a particularly low susceptibility to wear if the movable contact pieces of the two contact systems are each one on one of the two arms
  • Two-armed lever trained, rotatable contact bridge are arranged when the two fixed contact pieces of the contact systems are each arranged in an electrically conductive manner on a first of two arc tracks of the quenching chambers, and when the two second arc tracks of the two quenching chambers are electrically conductively connected to one another via a track connection.
  • Track connection can be formed by a stable busbar.
  • Such a switch according to the invention is therefore not only characterized by a large switching capacity and a long service life, but also by a minimal power loss and low heating.
  • the contact bridge should preferably be designed in the manner of a U and the axis of rotation of the contact bridge should be placed in the base of the U. Furthermore, at the same time the two movable contact pieces should be arranged at the free ends of the legs of the U and a section of the current path through which the current flows in opposite directions should be provided parallel to each of the two legs. In this way, well-developed current loops are achieved in the current path.
  • a particularly strong electrodynamic force acts on two switching arcs, which are initially based on the separating contact pieces and then commutate on the arc guide rails.
  • the two power connections can also be made at the ends of the first two arc guiding rails on which the fixed contact pieces are arranged, or one of the two power connections can be led to one end of one of the two first electric arc guiding tracks, which overlaps a quenching plate package in one of the two quenching chambers.
  • a contact bridge designed as a two-armed lever is to be avoided and a movement of the movable contact pieces is to be achieved by a tilting movement
  • flexible conductor sections are then generally installed, in particular in the form of a strand, which compensate for a local change in the position of the movable contact pieces caused by the tilting movement.
  • the intermediate conductor section mainly in the middle between the two contact systems. A largely symmetrical structure of the switch is thus achieved. Electrodynamic forces caused by asymmetries in the current path are largely avoided.
  • the intermediate conductor section at an angle.
  • One leg of the angle can then be rigidly connected to a contact carrier of a fixed contact piece or alternatively via a flexible conductor section to a contact carrier of a movable contact piece of one of the contact systems, while the other leg of the angle is connected to a current sensor.
  • the current sensor is designed as a bimetal strip, one end of the bimetal strip can be connected to the leg end and the bimetal strip can be arranged parallel to the leg in a particularly space-saving manner.
  • the switch according to the invention has two arc tracks connected to the two contact pieces of each contact system and interacting with the arc quenching chamber, then a current sensor of the switch responsive to short-circuit and / or overcurrents can be removed from the effect of the switch-off current during a switch-off process if this current sensor is connected in parallel to a separation path which is formed by the two arc running rails. If the switch according to the invention contains two current sensors, one of which responds to overcurrent and the other to short-circuit current, then both can be removed from the effect of the switch-off current during the switch-off phase if a series connection of both current sensors is placed parallel to the isolating path.
  • the switch according to the invention has an improved current-limiting effect when the current sensor is connected in series to the isolating path in the current path.
  • the impedance of the current sensor which is preferably designed as a bimetallic element, is then in series with the switching arcs and then relieves the switching arcs when the current is limited. If the switch according to the invention contains two current sensors, it will be a particularly good one Current limitation is reached when a series connection of both current sensors is connected in series to the isolating path in the current path.
  • FIG. 1 shows an equivalent circuit diagram of a current path of a circuit breaker according to the prior art with a double-interrupting contact arrangement
  • FIG. 7 shows a perspective view of an embodiment of the circuit breaker according to the invention which is constructed and shown in FIG. 2,
  • Embodiment of the circuit breaker according to the invention in the closed state in which two movable contact pieces of a double-interrupting contact arrangement are arranged on a contact bridge designed as a two-armed lever,
  • FIG. 9 shows a perspective view of the circuit breaker according to FIG.
  • Circuit breaker according to Fig. 8, 11 shows a view of the arrow XI
  • Fig. 13 is a view in the direction of an arrow XIII
  • the equivalent circuits shown in FIGS. 1 to 6 each contain a current path 7 of a circuit breaker running between two current connections 1, 2. In all equivalent circuits, this current path has a current conductor section 3 or 4 connected to the current connection 1 or 2. In the equivalent circuits according to FIGS. 1, 2 and 4, the current conductor section 3 is in each case connected to a short-circuit current release 5, for example to a coil of an impact armature or to another magnetic release.
  • the short-circuit current release 5 is not part of one Shown trigger device for actuating a contact arrangement of the switch containing two contact systems 10, 15.
  • the short-circuit current release 5 is in turn via an overcurrent release 6, which can be designed as a bimetal or as another thermal release, but possibly also as a magnetic release, for example as a current transformer, and is also part of the release device (not shown) a fixed contact 11 of the contact system 10 connected.
  • a movable contact 12 of the contact system 10 and a movable contact 13 of the contact system 15 lying in series with the contact system 10 in the current path 3 are arranged on a contact bridge (not designated).
  • a fixed contact 14 of the contact system 15 is connected to the current conductor 4.
  • the short-circuit current release 5 is in each case connected directly to the fixed contact 11 of the contact system 10.
  • the movable contact 12 of the contact system 10 is in each case connected to the overcurrent release 6 via a flexible current conductor section 25, for example a stranded wire, which in turn is connected to the fixed contact 14 of the contact system 15 via an intermediate conductor section 26.
  • the movable contact 13 of the contact system 15 is in each case connected to the conductor section 4 via a flexible conductor section 27, for example a stranded wire.
  • the current conductor section 3 is connected to the movable contact 12 of the contact system 10 via the overcurrent release 6 and the flexible current conductor section 25.
  • the fixed contact 11 of the contact system 10 is connected via the short-circuit current release 5 to the intermediate conductor section 26, which in turn is connected to the movable contact 13 of the contact system 15 via the flexibly designed current conductor section 27.
  • the fixed contact 14 of the contact system 15 is connected to the current conductor section 4.
  • the current conductor section 3 is connected to the fixed contact 11 of the contact system 10 via the overcurrent release 6 connected.
  • the movable contact 12 of this contact system is connected to the fixed contact 14 of the contact system 15 via the flexible conductor section 25 and the intermediate conductor section 26.
  • the movable contact 13 of this contact system is connected to the conductor section 4 via the flexible conductor section 27 and the short-circuit current release 5.
  • the arc runner 17 or 18 is connected to an unspecified contact carrier of the fixed contact 11 or 14.
  • the movable contacts 12 and 13 interact with an arc runner 19 and 20, respectively.
  • the arc tracks 17, 19 and 18, 20 conduct switching arcs 21, 22 formed in the contact systems 10, 15 when they are switched off, in each case to a quenching plate packet 23 or 24 of an arc quenching chamber 28 or 29.
  • the arc guide rail 19 is connected to the connection point of the overcurrent release 6 and the intermediate conductor section 26 and the arc guide rail 20 is connected to the current conductor section 4.
  • the overcurrent release between the connection point of the arc runner 20 and the conductor section 4 and the flexible current section 27 can be connected into the current path, as is indicated in FIG. 2 by the overcurrent release 6 shown in broken lines.
  • the arc guide rail 19 is connected to the current conductor section 3 and the arc guide rail 20 is connected to the connection point between the intermediate conductor section 26 and the flexibly designed current conductor section 27.
  • the arc running rail 19 is in each case connected to the connection point of the overcurrent release 6 and the flexible conductor section 25.
  • the arc track 20 is in the equivalent circuit of Figure 4 with the conductor section 4 and in the Equivalent circuit according to Figure 5 connected to the intermediate conductor section 26.
  • the arc guide rail 19 is connected to the connection point between the flexibly designed current conductor section 25 and the intermediate conductor section 26 and the arc guide rail 20 is connected to the connection point between the flexibly designed current conductor section 27 and the short-circuit current release 5.
  • the quenching chambers 28 and 29 each containing the quenching plate stack 23 and 24 and at least sections of the arc guide rails 17, 19 and 18, 20 are arranged laterally adjacent to one another.
  • the electromagnetic fields formed by the arcs 21 and 22 therefore mutually influence one another.
  • the current to be disconnected flows - as indicated by arrows - from the current connection 1 via the current conductor section 3, the short-circuit current release 5, the overcurrent release 6, the contact systems 10 and 15 and the current conductor section 4 to the power connection 2.
  • two arcs 21 and 22 commutating from the contacts 11, 12 and 13, 14 to the arc guide rails 17, 19 and 18, 20 are formed.
  • the arcs in opposite directions flow through the current to be switched off. Since the arcing chambers of the two contact systems 10 and 15 are adjacent to one another, the arcs repel one another due to electrodynamic forces.
  • the stronger arc 22 brakes the movement of the weaker arc 21 on the arc guide rails 17, 19 or even prevents it from entering the quenching plate package 23. This significantly limits the switch-off power of the switch according to the prior art.
  • this connection has the intermediate conductor section 26 shown in FIGS. 2 to 6.
  • this intermediate conductor section 26 is predominantly arranged in the middle between the two contact systems 10, 15. It is angled.
  • a contact carrier for the fixed contact 14, which is guided perpendicular to the angle, is formed on the free end of a leg of the angle, which leg is not designated for reasons of clarity.
  • the downward other leg of the angle carries at its lower end the overcurrent release 6 designed as a bimetallic strip.
  • This bimetallic strip is guided in a space-saving manner upwards parallel to the aforementioned leg and at its upper end with the as a strand, ie. H. flexible, trained conductor section 25 connected.
  • the intermediate conductor section 26 is also designed and arranged in the switch according to FIG.
  • one leg of the angle can also be connected to the movable contact 13 via the flexible conductor section 27 and the other leg via the coil of the
  • Short-circuit current release 5 to be connected to the fixed contact 11. This design is provided for the switches according to FIGS. 3 and 5.
  • a design of the current path that is particularly advantageous in terms of production technology is provided for the switch according to FIG. 6.
  • the switch according to FIG. 6 is one leg of the angle via the flexible conductor section 25 with the movable contact 12 and the other leg with the fixed contact
  • the overcurrent release 5 is connected in parallel to the isolating path formed by the two arc running rails 17, 19 and bridged by the arc 21 when the arc 21 is switched off, the overcurrent release 6, which is preferably designed as a bimetal element, is only activated briefly exposed to the effect of the current to be switched off.
  • the overcurrent release 6 can therefore be dimensioned relatively weak.
  • the impedance of the overcurrent release 6 is added to the impedances of the arcs 21, 22 and then supports them in limiting the current , The switching capacity of the circuit breaker is additionally increased.
  • the movable contact pieces 12, 13 of the two contact systems are each arranged on one of the two arms of a rotatable contact bridge 30 designed as a two-armed lever.
  • the two fixed contact pieces 11, 14 of the contact systems are arranged in an electrically conductive manner on the arc guide rails 17, 18 of the quenching chambers 28, 29 (see, for example, FIGS. 8 and 9).
  • the geometries of the quenching chambers 28 and 29, which are determined by the fixed contact pieces 11 and 14 and the arc guide rails 17, 19 and 18, 20, respectively, are located parallel to one another aligned legs of a U, the base of which is formed by the contact bridge 30 (FIGS.
  • the axis of rotation 32 (e.g. FIGS. 10, 11 or 13 to 15) of the contact bridge 30 is therefore aligned parallel to the legs of the U.
  • the arc running rails 19 and 20 of the quenching chambers are connected to one another in an electrically conductive manner via a running rail connection 31.
  • the current flows in the direction of the arrow from the power connection 1 via the contact bridge 31 contacted to the fixed contact pieces 11, 14 to the power connection 2 (in FIG. 8 is only the fixed contact piece) when the contact arrangement (FIG. 8) is closed 14).
  • the switch opens under current, two switching arcs 21 and 22 are formed, which are guided by electrodynamic forces from the contact pieces 11, 12 and 13, 14 onto the arc guide rails 17, 19 and 18, 20 (FIG. 9).
  • the current is now commutated into an extinguishing circuit comprising the quenching chambers 28, 29 and flows from the power connection 1 via the arc guide rail 17, the switching arc 21, the arc guide rail 19, the guide rail connection 31, the guide rail 20, the switching arc 22 and the arc guide rail 18 to the current connection 2
  • the fact that the current is guided by means of the track connection 31 from the upper arc track 19 of the arc quenching chamber 28 to the lower arc track 20 of the arc quenching chamber 29 means that the current direction in both switching arcs 21 and 22 is the same.
  • the two arcs therefore attract each other. They are driven synchronously into the quenching plates 23, 24 of the two quenching chambers by the electrodynamic forces and quenched practically simultaneously.
  • the embodiment according to FIGS. 8 to 11 is characterized by particularly low wear. This is primarily due to the fact that the running rail connection 31 is formed by a stable current rail which, in contrast to a flexible current connection, which is designed, for example, as a strand, has practically no wear even after a high number of switching operations.
  • the rail also has a low electrical resistance.
  • Such a switch according to the invention is therefore not only characterized by an excellent switching capacity and a long service life, but also by a minimal power loss and low heating.
  • the contact bridge 30 is designed in the manner of a U.
  • the axis of rotation 32 of the contact bridge is placed in the base 33 of the U, whereas the two movable contact pieces 12 and 13 are arranged at the free ends of the legs 34 and 35 of the U, respectively.
  • the section of the base 33 and the leg 34 arranged to the left of the axis of rotation 32 and the section of the base 33 and the leg 35 arranged to the right of the axis of rotation 32 each form a lever arm designed as a right angle.
  • This lever arm fulfills the same functions as the corresponding lever arm in the embodiment according to FIGS. 8 to 11.
  • this angled lever arm is also distinguished by the following function: its section formed by leg 34 is guided parallel to power connection 1 (FIGS. 12 and 13 ).
  • the current in the leg 34 has the opposite direction to that in the current connection 1, the two current conductors 1 and 34 form a well-designed current loop.
  • a corresponding current loop is also achieved by the current conductors 35 and 2.
  • both switching arcs are driven practically simultaneously and at the same time with great force into the quenching plate packs 23, 24 and the current to be switched off is interrupted by extinguishing the switching arcs. Because of the synchronous commutation of the arcs from the contact pieces to the arc guide rails, which is supported by large forces, the switch is characterized by a large breaking capacity.
  • the running rail connection is evidently guided around the contact bridge, while in the embodiment according to FIG. 17 it is guided around the quenching plate packs.
  • the power connections 1, 2 can be guided at the ends of the two arc running rails 17, 18, on which the fixed contact pieces are arranged. This is realized in the embodiments according to FIGS. 8 to 15.
  • the power connection 2 is guided to one end of the arc guide rail 20, which overlaps the quenching plate package of the associated quenching chamber 29.

Landscapes

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

Abstract

L'invention concerne un disjoncteur présentant un trajet de courant (7) doté de deux éléments de contact électrique (1, 2) et d'un dispositif de contact à interruption double. Le dispositif de contact contient deux systèmes de contact (10, 15) montés en série et dans lesquels le trajet de courant s'étend dans deux sections parallèles. Lors d'une opération de commutation, ces sections sont respectivement formées par un arc de coupure (21, 22). Les pièces de contact (11, 12) des deux systèmes de contact sont interconnectées et liées aux deux éléments de contact électriques (1, 2) de telle façon que le courant ait le même sens dans les deux sections. Ainsi les deux arcs de coupure (21, 22) s'attirent mutuellement, ce qui permet d'éviter un déplacement des arcs de coupure l'un par rapport à l'autre. De plus, les deux arcs de coupure prénètrent, avec une grande certitude, de manière synchrone dans les chambres d'extinction d'arc (28, 29) où ils s'éteignent quasiment simultanément. Par conséquent, ce disjoncteur se distingue par une grande capacité de coupure.
EP01271945A 2000-12-27 2001-12-20 Disjoncteur dote d'un dispositif de contact a interruption double Withdrawn EP1346388A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01271945A EP1346388A1 (fr) 2000-12-27 2001-12-20 Disjoncteur dote d'un dispositif de contact a interruption double

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP00811248 2000-12-27
EP00811248A EP1220260A1 (fr) 2000-12-27 2000-12-27 Disjoncteur à système de contacts à coupure double
PCT/CH2001/000735 WO2002052598A1 (fr) 2000-12-27 2001-12-20 Disjoncteur dote d'un dispositif de contact a interruption double
EP01271945A EP1346388A1 (fr) 2000-12-27 2001-12-20 Disjoncteur dote d'un dispositif de contact a interruption double

Publications (1)

Publication Number Publication Date
EP1346388A1 true EP1346388A1 (fr) 2003-09-24

Family

ID=8175111

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00811248A Withdrawn EP1220260A1 (fr) 2000-12-27 2000-12-27 Disjoncteur à système de contacts à coupure double
EP01271945A Withdrawn EP1346388A1 (fr) 2000-12-27 2001-12-20 Disjoncteur dote d'un dispositif de contact a interruption double

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00811248A Withdrawn EP1220260A1 (fr) 2000-12-27 2000-12-27 Disjoncteur à système de contacts à coupure double

Country Status (4)

Country Link
US (1) US20030117246A1 (fr)
EP (2) EP1220260A1 (fr)
CA (1) CA2400387A1 (fr)
WO (1) WO2002052598A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1325891B (it) * 2001-06-22 2004-12-30 Abb Service Srl Polo interruttore miniaturizzato
AU2002950581A0 (en) * 2002-08-02 2002-09-12 Wayne Callen Electrical safety circuit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH543174A (de) * 1971-09-30 1973-10-15 Carl Maier & Cie Elek Sche Sch Leitungsschutzschalter
JPH088048B2 (ja) * 1989-09-18 1996-01-29 三菱電機株式会社 限流装置
FR2703821B1 (fr) * 1993-04-07 1995-05-12 Merlin Gerin Disjoncteur électrique à répulsion électrodynamique des contacts et à chambres de coupure double.
ES2100506T3 (es) * 1993-10-15 1997-06-16 Hager Electro Chapa de conduccion doble para camara de conduccion de arco de disyuntor.
JPH10285037A (ja) * 1997-04-10 1998-10-23 Mitsubishi Electric Corp アナログ−デジタル変換回路
US5874873A (en) * 1997-08-22 1999-02-23 Eaton Corporation Electric control apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02052598A1 *

Also Published As

Publication number Publication date
EP1220260A1 (fr) 2002-07-03
US20030117246A1 (en) 2003-06-26
WO2002052598A1 (fr) 2002-07-04
CA2400387A1 (fr) 2002-07-04

Similar Documents

Publication Publication Date Title
EP0174904B1 (fr) Dispositif de contact pour disjoncteur basse tension avec un levier de contact à deux bras
EP2463878A1 (fr) Commutateur doté d'une chambre d'extinction
EP0150486B1 (fr) Interrupteur de circuit électrique
EP1683173B1 (fr) Dispositif d'extinction d'arc
EP1735803B1 (fr) Dispositif de commutation
EP0350825B1 (fr) Appareil de commutation électrique
EP3428942A1 (fr) Dispositif d'extinction d'arc de courant continu et appareil de commutation de courant continu électromécanique
DE102006028696A1 (de) Leistungsschalter oder Leitungsschutzschalter
EP1346388A1 (fr) Disjoncteur dote d'un dispositif de contact a interruption double
EP2541574B1 (fr) Disjoncteur électrique à double point de rupture
DE19629867A1 (de) Strombegrenzender Leistungsschalter
DE10132858B4 (de) Schutzschalter
EP2393096B1 (fr) Appareil de commutation basse tension pouvant être interrompu facilement, notamment commutateur de protection de ligne
DE10012605A1 (de) Schaltpol für Niederspannungs-Schaltgeräte mit linear bewegbarem Kontaktträger
DE2751452C2 (de) Elektrisches Schaltgerät
DE3803849C1 (en) High-power switching path for protective switching devices
EP1615246A1 (fr) Dispositif d'extinction d'arc pour un disjoncteur
EP3889986B1 (fr) Disjoncteur de protection compact électromécanique
DE2826243A1 (de) Elektrisches schaltgeraet
DE2512481C3 (de) Kontaktanordnung eines elektrischen Mehrphasenschalters
DE3810977C2 (de) Strombegrenzende Schalteinrichtung mit elektrodynamisch öffnenden Schaltstücken
DE102018108137B4 (de) Schutzschaltgerät
DE3034189C2 (de) Zweipoliger Niederspannungsschutzschalter mit Einfachunterbrechung und elektrodynamischer Kompensation der Kontaktöffnungskräfte
EP0110005B1 (fr) Agencement de contact pour sectionneur pantographe
DE19734676A1 (de) Schaltgerät

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020812

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH CY DE DK FR GB IT LI

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090116