EP0140173A1 - Switch part for an electrical switching device - Google Patents

Switch part for an electrical switching device Download PDF

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Publication number
EP0140173A1
EP0140173A1 EP84111562A EP84111562A EP0140173A1 EP 0140173 A1 EP0140173 A1 EP 0140173A1 EP 84111562 A EP84111562 A EP 84111562A EP 84111562 A EP84111562 A EP 84111562A EP 0140173 A1 EP0140173 A1 EP 0140173A1
Authority
EP
European Patent Office
Prior art keywords
contact
power supply
guide plate
supply line
arc guide
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
EP84111562A
Other languages
German (de)
French (fr)
Other versions
EP0140173B1 (en
Inventor
Manfred Dipl.-Ing. Müller
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to AT84111562T priority Critical patent/ATE31841T1/en
Publication of EP0140173A1 publication Critical patent/EP0140173A1/en
Application granted granted Critical
Publication of EP0140173B1 publication Critical patent/EP0140173B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns

Definitions

  • the invention relates to a switching piece for electrical switching devices, in particular contactors, with an approximately rectilinear power supply line and an arc guide plate guided at a distance from the contact pad, which forms a U with the power supply cord and the free end of which takes over the arc and runs approximately in the plane of the contact pad.
  • the arc baffle is screwed onto the end face of the relatively strong power supply line.
  • An intermediate insulating layer is arranged between the arc guide plate and the power supply line, so that the power supply line and arc guide plate act like a U on the drive of the arc. Since the distance between the two U-legs is relatively small here, the drive effect for the arc is not particularly large.
  • the contact pad is practically in the same plane with the entire arc baffle, so that a particularly precise guide is required for the movable contact piece so that the contact pad of the movable contact piece does not come to rest on the arc baffle.
  • the supply line itself is also U-shaped, so that the contact piece can only be used for devices with low current carrying capacity; because the U-shaped supply line causes the switching bridge to be lifted at high currents (DE-OS 28 03 249).
  • the invention is therefore based on the object of improving a contact piece of the type mentioned above in such a way that it is simple to manufacture, assemble and are suitable for operation with contact pieces which can be produced without particularly close tolerances for guiding the contact piece.
  • This is achieved in a simple manner in that the arc guide plate has a U-shape in itself and the U-leg is offset in parallel in the region of the contact support away from the contact point and the other U-leg on the side of the free end of the stairway facing the contact point remote power supply line penetrated by the fastening screw.
  • the setting of the required air gap between the contact pad and the power supply line and the arc baffle can be achieved in a simple manner if slugs are formed on the arc baffle facing the power supply line.
  • the arc guide plate can be inserted in a simple manner after the mounting screw has been inserted through the mounting hole in the power supply line.
  • the slugs are pressed against the power supply line, so that the power supply line and arc baffle together with the fastening screw form a complete unit.
  • the switching element consists of the step-shaped curved power supply line 1 with the contact pad 2, which cooperates with the contact pad 3 of the switching bridge 4, as well as the U-shaped arc guide plate 5 and the fastening screw 6.
  • the arc guide plate is included Provide an outbreak 7 into which a part of the power supply line 1 projects, namely between the power supply line 1 and the edge parts 8 of the arc guide plate around the contact pad 2, an air gap 9, so that the arc guide plate is initially only electrically conductive via the fastening screw 6 with the power supply line 1 connected is.
  • the step-shaped power supply line 1 has the advantage that the current carrying capacity of the contact arrangement is not adversely affected by a U-shaped supply line.
  • the U-shaped configuration is available for the arc running, ie there is a switchable current loop for the arc running.
  • the slugs 11 bridging the air gap slightly change the function practically nothing. However, they are used for pre-assembly of the contact.
  • the fastening screw 6 is inserted into the fastening hole in the power supply line 1.
  • the arc baffle is inserted between the fastening screw and the power supply line.
  • the slugs are then pressed against the power supply line 1 by pressing the edge parts 8 in the direction of the arrows 13, so that the preassembled unit results.
  • the free end 14 of the arc guide plate 5 lies approximately in the plane of the contact pad 2.
  • the part 15 of the leg (17) is offset parallel to it, pointing away from the contact point.
  • the contact bridge 4 can also be placed at an angle without coming into contact with the edge parts 8 of the arc guide plate (5).
  • the opening of the U is so large that sufficient arcing is ensured without the current carrying capacity of the contact piece being adversely affected.
  • the fastening screw 6 cannot be lost after the pressing, since the screw head is larger than the opening 16 for the screwdriver.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Contacts (AREA)
  • Adornments (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Keying Circuit Devices (AREA)
  • Relay Circuits (AREA)
  • Push-Button Switches (AREA)
  • Brushes (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

A switching device is provided for electrical switchgear, particularly contactors. The switching device includes a step-shaped, bowed current lead with a contact portion cooperating with a contact portion of a switch bridge. The switching device also includes a U-shaped arc chute and a fastening bolt. The arc chute surrounds the contact portion with an air gap so that the electrical connection is made solely via the fastening bolt. The edge portions of the arc chute are set back in the area of the contact portion so that the contact portion of the contact bridge cannot come in contact with the arc chute even though the contact bridge may be obliquely positioned.

Description

Die Erfindung bezieht sich auf ein Schaltstück für elektrische Schaltgeräte, insbesondere Schütze, mit etwa geradliniger Stromzuleitung und einem im Abstand zur Kontaktauflage geführten Lichtbogenleitblech, das mit der Stromzuleitung ein U bildet und dessen den Lichtbogen übernehmendes freies Ende etwa in der Ebene der Kontaktauflage verläuft.The invention relates to a switching piece for electrical switching devices, in particular contactors, with an approximately rectilinear power supply line and an arc guide plate guided at a distance from the contact pad, which forms a U with the power supply cord and the free end of which takes over the arc and runs approximately in the plane of the contact pad.

Bei einem bekannten Schaltstück der obengenannten Art (US-PS 3 211 867) ist an der Stirnseite der relativ stark ausgeführten Stromzuleitung das Lichtbogenleitblech angeschraubt. Zwischen dem Lichtbogenleitblech und der Stromzuleitung ist eine Isolierzwischenlage angeordnet, so daß Stromzuleitung und Lichtbogenleitblech wie ein U auf den Antrieb des Lichtbogens wirken. Da der Abstand der beiden U-Schenkel hier relativ gering ist, ist die Antriebswirkung für den Lichtbogen nicht besonders groß. Hinzu kommt, daß die Kontaktauflage praktisch in der gleichen Ebene mit dem gesamten Lichtbogenleitblech liegt, so daß eine besonders exakte Führung für das bewegliche Schaltstück erforderlich ist, damit die Kontaktauflage des beweglichen Schaltstückes nicht auf dem Lichtbogenleitblech zur Auflage kommt. Der gleiche Sachverhalt trifft für ein weiterhin bekanntes Schaltstück zu. Hier ist zusätzlich noch die Zuleitung selbst U-förmig ausgebildet, so daß das Schaltstück nur für Geräte mit geringer Stromtragfähigkeit Verwendung finden kann; denn die U-förmige Zuleitung bewirkt bei hohen Strömen ein Abheben der Schaltbrücke (DE-OS 28 03 249).In a known contact piece of the type mentioned above (US Pat. No. 3,211,867), the arc baffle is screwed onto the end face of the relatively strong power supply line. An intermediate insulating layer is arranged between the arc guide plate and the power supply line, so that the power supply line and arc guide plate act like a U on the drive of the arc. Since the distance between the two U-legs is relatively small here, the drive effect for the arc is not particularly large. In addition, the contact pad is practically in the same plane with the entire arc baffle, so that a particularly precise guide is required for the movable contact piece so that the contact pad of the movable contact piece does not come to rest on the arc baffle. The same situation applies to a contact piece that is still known. Here, the supply line itself is also U-shaped, so that the contact piece can only be used for devices with low current carrying capacity; because the U-shaped supply line causes the switching bridge to be lifted at high currents (DE-OS 28 03 249).

Der Erfindung liegt somit die Aufgabe zugrunde, ein Schaltstück der obengenannten Art dahingehend zu verbessern, daß es einfach herzustellen, zu montieren und für den Betrieb mit Schaltstücken, die ohne besonders enge Toleranzen für die Führung des Schaltstückes herzustellen sind, geeignet sind. Dies wird auf einfache Weise dadurch erreicht, daß das Lichtbogenleitblech für sich U-Form hat und der U-Schenkel im Bereich der Kontaktauflage von der Kontaktstelle weg parallel versetzt ist und der andere U-Schenkel auf der der Kontaktstelle zugewandten Seite des freien Endes der treppenförmig abgesetzten Stromzuleitung von der Befestigungsschraube durchdrungen aufliegt. Die Einstellung des erforderlichen Luftspaltes zwischen Kontaktauflage und Stromzuleitung und dem Lichtbogenleitblech läßt sich auf einfache Weise erreichen, wenn am Lichtbogenleitblech der Stromzuleitung zugewandt Butzen angeformt sind. Wird am Befestigungsschenkel des Lichtbogenleitbleches ein offener Schlitz als Befestigungsbogen vorgesehen, so kann das Lichtbogenleitblech auf einfache Weise eingeschoben werden, nachdem die Befestigungsschraube durch das Befestigungsloch der Stromzuleitung eingeschoben wurde. Durch seitliches Zusammenpressen des Lichtbogenleitbleches werden die Butzen gegen die Stromzuleitung gepreßt, so daß Stromzuleitung und Lichtbogenleitblech samt Befestigungsschraube eine komplette Einheit bilden.The invention is therefore based on the object of improving a contact piece of the type mentioned above in such a way that it is simple to manufacture, assemble and are suitable for operation with contact pieces which can be produced without particularly close tolerances for guiding the contact piece. This is achieved in a simple manner in that the arc guide plate has a U-shape in itself and the U-leg is offset in parallel in the region of the contact support away from the contact point and the other U-leg on the side of the free end of the stairway facing the contact point remote power supply line penetrated by the fastening screw. The setting of the required air gap between the contact pad and the power supply line and the arc baffle can be achieved in a simple manner if slugs are formed on the arc baffle facing the power supply line. If an open slot is provided as a mounting arc on the mounting leg of the arc guide plate, the arc guide plate can be inserted in a simple manner after the mounting screw has been inserted through the mounting hole in the power supply line. By pressing the arc baffle sideways, the slugs are pressed against the power supply line, so that the power supply line and arc baffle together with the fastening screw form a complete unit.

Anhand der Zeichnung wird ein Ausführungsbeispiel gemäß der Erfindung beschrieben und die 'Wirkungsweise näher erläutert.An exemplary embodiment according to the invention is described with reference to the drawing and the mode of operation is explained in more detail.

Das Schaltstück besteht aus der treppenförmig gebogenen Stromzuleitung 1 mit der Kontaktauflage 2, die mit der Kontaktauflage 3 der Schaltbrücke 4 zusammenarbeitet, sowie dem U-förmig abgebogenen Lichtbogenleitblech 5 und der Befestigungsschraube 6. Das Lichtbogenleitblech ist mit einer Ausbrechung 7 versehen, in die ein Teil der Stromzuleitung 1 hineinragt, und zwar ist zwischen Stromzuleitung 1 und den Randteilen 8 des Lichtbogenleitbleches um die Kontaktauflage 2 ein Luftspalt 9, so daß das Lichtbogenleitblech zunächst nur über die Befestigungsschraube 6 mit der Stromzuleitung 1 elektrisch leitend verbunden ist. Die treppenförmige Stromzuleitung 1 hat den Vorteil, daß die Stromtragfähigkeit der Kontaktanordnung durch eine U-förmige Zuleitung nicht nachteilig beeinflußt wird. Nach Obertritt des Lichtbogens 10 auf das Lichtbogenleitblech ist jedoch für den Lichtbogenlauf die U-förmige Ausbildung vorhanden, d.h. es ergibt sich hier eine schaltbare Stromschleife für den Lichtbogenlauf. Die den Luftspalt geringfügig überbrückenden Butzen 11 ändern an der Funktion praktisch nichts. Sie dienen jedoch zur Vormontage des Schaltstückes. Hierzu wird die Befestigungsschraube 6 in das Befestigungsloch in der Stromzuleitung 1 eingeschoben. Durch den offenen Schlitz 12 wird das Lichtbogenleitblech zwischen Befestigungsschraube und Stromzuleitung eingeschoben. Hernach werden die Butzen durch Andrücken der Randteile 8 in Richtung der Pfeile 13 gegen die Stromzuleitung 1 gedrückt, so daß sich die vormontierte Einheit ergibt. Wie die Zeichnung zeigt, liegt das freie Ende 14 des Lichtbogenleitbleches 5 etwa in der Ebene der Kontaktauflage 2. Der Teil 15 des Schenkels (17) ist parallel hierzu versetzt, und zwar von der Kontaktstelle wegweisend. Dies bedeutet, daß die Kontaktbrücke 4 auch mal schräg aufsetzen kann, ohne hierbei mit den Randteilen 8 des Lichtbogenleitbleches (5) in Berührung zu kommen. Die öffnung des U ist jedoch so groß, daß ein ausreichender Lichtbogenlauf gewährleistet ist, ohne daß die Stromtragfähigkeit des Schaltstückes nachteilig beeinflußt wird. Die Befestigungsschraube 6 ist nach dem Verpressen unverlierbar, da der Schraubenkopf größer ist als die öffnung 16 für den Schraubendreher.The switching element consists of the step-shaped curved power supply line 1 with the contact pad 2, which cooperates with the contact pad 3 of the switching bridge 4, as well as the U-shaped arc guide plate 5 and the fastening screw 6. The arc guide plate is included Provide an outbreak 7 into which a part of the power supply line 1 projects, namely between the power supply line 1 and the edge parts 8 of the arc guide plate around the contact pad 2, an air gap 9, so that the arc guide plate is initially only electrically conductive via the fastening screw 6 with the power supply line 1 connected is. The step-shaped power supply line 1 has the advantage that the current carrying capacity of the contact arrangement is not adversely affected by a U-shaped supply line. After the arc 10 has entered the arc guide plate, however, the U-shaped configuration is available for the arc running, ie there is a switchable current loop for the arc running. The slugs 11 bridging the air gap slightly change the function practically nothing. However, they are used for pre-assembly of the contact. For this purpose, the fastening screw 6 is inserted into the fastening hole in the power supply line 1. Through the open slot 12, the arc baffle is inserted between the fastening screw and the power supply line. The slugs are then pressed against the power supply line 1 by pressing the edge parts 8 in the direction of the arrows 13, so that the preassembled unit results. As the drawing shows, the free end 14 of the arc guide plate 5 lies approximately in the plane of the contact pad 2. The part 15 of the leg (17) is offset parallel to it, pointing away from the contact point. This means that the contact bridge 4 can also be placed at an angle without coming into contact with the edge parts 8 of the arc guide plate (5). However, the opening of the U is so large that sufficient arcing is ensured without the current carrying capacity of the contact piece being adversely affected. The fastening screw 6 cannot be lost after the pressing, since the screw head is larger than the opening 16 for the screwdriver.

4 Patentansprüche 1 Figur4 claims 1 figure

Claims (4)

1. Schaltstück für elektrische Schaltgeräte, insbesondere Schütze, mit etwa geradliniger Stromzuleitung und einem im Abstand zur Kontaktauflage geführten Lichtbogenleitblech, das mit der Stromzuleitung ein U bildet und dessen den Lichtbogen übernehmendes freies Ende etwa in der Ebene der Kontaktauflage verläuft, dadurch ge- kennzeichnet , daß das Lichtbogenleitblech (5) für sich U-Form hat und der U-Schenkel (17) im Bereich der Kontaktauflage (2) von der Kontaktstelle weg parall'el versetzt ist und der andere U-Schenkel (18) auf der der Kontaktstelle zugewandten Seite des freien Endes (19) der treppenförmig abgesetzten Stromzuleitung (1) von der Befestigungsschraube (6) durchdrungen aufliegt.1. Switching piece for electrical switching devices, in particular contactors, with an approximately rectilinear power supply line and an arc guide plate guided at a distance from the contact pad, which forms a U with the power supply cord and whose free end receiving the arc runs approximately in the plane of the contact pad, characterized in that that the arc guide plate (5) itself U-shape and the U-legs (17) in the region of the contact support (2) away parall from the contact point 'el is offset and the other U-leg (18) on the side facing the contact point Side of the free end (19) of the stepped power supply line (1) is penetrated by the fastening screw (6). 2. Schaltstück nach Anspruch 1, dadurch ge- kennzeichnet, daß am Lichtbogenleitblech (5) der Stromzuleitung (1) zugewandt Butzen (11) angeformt sind.2. Contact according to claim 1, characterized in that slugs (11) are formed on the arc guide plate (5) facing the power supply line (1). 3. Schaltstück nach Anspruch 1 oder 2, dadurch gekennzeichnet , daß am Befestigungsschenkel /18) des Lichtbogenleitbleches (5) ein offener Schlitz (12) als Befestigungsbohrung vorgesehen ist.3. Switching piece according to claim 1 or 2, characterized in that an open slot (12) is provided as a mounting hole on the mounting leg / 18) of the arc guide plate (5). 4. Schaltstück nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet , daß das Lichtbogenleitblech (5) aus ferromagnetischem Material besteht.4. Switching element according to claim 1, 2 or 3, characterized in that the arc guide plate (5) consists of ferromagnetic material.
EP84111562A 1983-10-14 1984-09-27 Switch part for an electrical switching device Expired EP0140173B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84111562T ATE31841T1 (en) 1983-10-14 1984-09-27 CONTACT PIECE FOR ELECTRICAL SWITCHING DEVICES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3337515 1983-10-14
DE19833337515 DE3337515A1 (en) 1983-10-14 1983-10-14 SWITCHING PIECE FOR ELECTRICAL SWITCHGEAR

Publications (2)

Publication Number Publication Date
EP0140173A1 true EP0140173A1 (en) 1985-05-08
EP0140173B1 EP0140173B1 (en) 1988-01-07

Family

ID=6211908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111562A Expired EP0140173B1 (en) 1983-10-14 1984-09-27 Switch part for an electrical switching device

Country Status (10)

Country Link
US (1) US4618748A (en)
EP (1) EP0140173B1 (en)
JP (1) JPS60100330A (en)
AT (1) ATE31841T1 (en)
BR (1) BR8405100A (en)
DE (2) DE3337515A1 (en)
DK (1) DK158424C (en)
ES (1) ES281940Y (en)
FI (1) FI80359C (en)
IN (1) IN161308B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0210727A1 (en) * 1985-06-17 1987-02-04 Eaton Corporation High current double-break electrical contactor
FR2713391A1 (en) * 1993-12-06 1995-06-09 Telemecanique Circuit breaker device breaking device, in particular for contactor or contactor-circuit breaker.

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3447537A1 (en) * 1983-10-14 1986-07-10 Siemens AG, 1000 Berlin und 8000 München Switching piece for electrical switching apparatuses
JPH0724172B2 (en) * 1986-06-10 1995-03-15 三菱電機株式会社 Contact point
IT208625Z2 (en) * 1986-12-11 1988-05-28 Sace Spa FIXED CONTACT FOR LOW VOLTAGE SWITCHES.
DE8906799U1 (en) * 1989-06-02 1990-09-27 Siemens AG, 1000 Berlin und 8000 München Switching piece for electrical switching devices
CH678989A5 (en) * 1989-10-04 1991-11-29 Sprecher & Schuh Ag
FR2696273B1 (en) * 1992-09-25 1994-11-18 Telemecanique Electric circuit breaker with magnetic blow.
DE19814410C2 (en) * 1998-03-31 2000-03-23 Moeller Gmbh Arrangement for fixed contact attachment for electrical switching devices
US7716816B2 (en) * 2006-09-22 2010-05-18 Rockwell Automation Technologies, Inc. Method of manufacturing a switch assembly
US7551050B2 (en) * 2006-09-22 2009-06-23 Rockwell Automation Technologies, Inc. Contactor assembly with arc steering system
US7633399B2 (en) 2007-02-27 2009-12-15 Eaton Corporation Configurable arc fault or ground fault circuit interrupter and method
EP2573784B1 (en) 2011-09-21 2016-08-03 Siemens Aktiengesellschaft Circuit breaker with optimised housing stabilisation through clamping pieces
JP2015109246A (en) * 2013-12-05 2015-06-11 日本電産サンキョー株式会社 Switch member and switch device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639354A (en) * 1950-10-07 1953-05-19 Gen Electric Electric circuit breaker
US3118036A (en) * 1962-07-12 1964-01-14 Gen Electric Circuit breaker contact and arc extinguishing means
FR1366120A (en) * 1963-05-28 1964-07-10 App S Thermoflex Etablissement Magnetic blowing device for the breaking arc of an electric switch
FR1399516A (en) * 1963-06-28 1965-05-14 Thomson Houston Comp Francaise Improvements to electrical switches
FR2378344A1 (en) * 1977-01-25 1978-08-18 Telemecanique Electrique BLOWING PART
EP0079978A1 (en) * 1981-11-21 1983-06-01 Sprecher & Schuh AG Contact piece for an electric switch apparatus, in particular for a protective switch
DE3302884A1 (en) * 1982-01-28 1983-08-04 Mitsubishi Denki K.K., Tokyo ELECTRIC CIRCUIT BREAKER

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL194469A (en) * 1954-02-04 Merlin Gerin
JPS5814441A (en) * 1981-07-17 1983-01-27 三菱電機株式会社 Circuit breaker
JPS5825031A (en) * 1981-08-06 1983-02-15 三菱電機株式会社 Circuit breaker

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639354A (en) * 1950-10-07 1953-05-19 Gen Electric Electric circuit breaker
US3118036A (en) * 1962-07-12 1964-01-14 Gen Electric Circuit breaker contact and arc extinguishing means
FR1366120A (en) * 1963-05-28 1964-07-10 App S Thermoflex Etablissement Magnetic blowing device for the breaking arc of an electric switch
FR1399516A (en) * 1963-06-28 1965-05-14 Thomson Houston Comp Francaise Improvements to electrical switches
FR2378344A1 (en) * 1977-01-25 1978-08-18 Telemecanique Electrique BLOWING PART
EP0079978A1 (en) * 1981-11-21 1983-06-01 Sprecher & Schuh AG Contact piece for an electric switch apparatus, in particular for a protective switch
DE3302884A1 (en) * 1982-01-28 1983-08-04 Mitsubishi Denki K.K., Tokyo ELECTRIC CIRCUIT BREAKER

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0210727A1 (en) * 1985-06-17 1987-02-04 Eaton Corporation High current double-break electrical contactor
FR2713391A1 (en) * 1993-12-06 1995-06-09 Telemecanique Circuit breaker device breaking device, in particular for contactor or contactor-circuit breaker.
EP0657907A1 (en) * 1993-12-06 1995-06-14 Schneider Electric Sa Current interrupting part of a switching device in particular of a contactor or a circuit breaker

Also Published As

Publication number Publication date
FI80359B (en) 1990-01-31
DE3468581D1 (en) 1988-02-11
FI843295A (en) 1985-04-15
EP0140173B1 (en) 1988-01-07
JPH0228214B2 (en) 1990-06-22
ES281940U (en) 1985-04-01
DK158424C (en) 1990-10-22
FI80359C (en) 1990-05-10
US4618748A (en) 1986-10-21
BR8405100A (en) 1985-08-27
DK488384D0 (en) 1984-10-12
DK488384A (en) 1985-04-15
ATE31841T1 (en) 1988-01-15
JPS60100330A (en) 1985-06-04
ES281940Y (en) 1986-09-01
IN161308B (en) 1987-11-07
FI843295A0 (en) 1984-08-21
DE3337515A1 (en) 1985-05-02
DK158424B (en) 1990-05-14

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