EP0177438B1 - Interrupteur multipolaire avec des boîtiers séparés en matière isolante pour chaque pôle - Google Patents

Interrupteur multipolaire avec des boîtiers séparés en matière isolante pour chaque pôle Download PDF

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Publication number
EP0177438B1
EP0177438B1 EP85730128A EP85730128A EP0177438B1 EP 0177438 B1 EP0177438 B1 EP 0177438B1 EP 85730128 A EP85730128 A EP 85730128A EP 85730128 A EP85730128 A EP 85730128A EP 0177438 B1 EP0177438 B1 EP 0177438B1
Authority
EP
European Patent Office
Prior art keywords
pole
poles
circuit breaker
housing
contact
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.)
Expired - Lifetime
Application number
EP85730128A
Other languages
German (de)
English (en)
Other versions
EP0177438A2 (fr
EP0177438A3 (en
Inventor
Bernard Dimarco
Charles W. Stanford
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
Publication of EP0177438A2 publication Critical patent/EP0177438A2/fr
Publication of EP0177438A3 publication Critical patent/EP0177438A3/de
Application granted granted Critical
Publication of EP0177438B1 publication Critical patent/EP0177438B1/fr
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
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • 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
    • H01H2009/0094—Details of rotatable shafts which are subdivided; details of the coupling means thereof

Definitions

  • a circuit breaker of this type is known from DE-A-2 657 414.
  • a crossbeam is used which extends through openings in the mutually facing walls of the single-pole housing and connects the drive devices located therein to one another. Only one of the poles is provided with an operating handle. Similarly, the trip devices of the individual poles are connected by a trip shaft or common actuating rod which extends through openings in the adjacent housing walls.
  • the initially explained design of low-voltage power switches, from which the invention is based, has the advantage that the insulating material parts are easier to manufacture because they are not only uniform, but also smaller and have a lower unit weight than the more extensive and complicated housing parts of the type with a two-part housing .
  • the advantage mentioned is offset by certain difficulties in the formation of the multi-pole switches from the single-pole units which result from the coupling elements which are required for connecting the contact arrangements and the tripping device of the individual poles.
  • Multi-pole circuit breakers are also known (DE-B-2 349 600), which are each composed of fully functional single-pole units. Each of these pole units thus has its own drive device with an actuating handle and a triggering device. A coupling is provided only for these, namely by coupling parts which come into engagement with one another when the pole units are joined together. In addition, a centering ring is required, which is inserted into the housing openings and which aligns the neighboring switch housings with each other.
  • the object of the invention in this context is to overcome these difficulties and to provide a system for the particularly simple establishment of the required operative connections between the individual switch poles.
  • the form-fittingly interacting coupling members of the tripping devices make it unnecessary to have a tripping rod or tripping shaft that is matched in length to the desired number of poles of the circuit breaker. Rather, the desired coupling only comes about by joining the individual poles together. In contrast to the previously used longer coupling elements in the form of rods or shafts, this also avoids the risk of damage because the new coupling elements either do not protrude at all or only slightly over the width of the individual housings. Furthermore, separate drive devices for the additional poles are dispensed with by the fact that the contact arrangements are connected by a crossmember. The space thus freed up in the additional poles can be used to accommodate additional facilities or for measures to improve the mechanical strength.
  • the coupling member of the one pole can have a tongue protruding beyond the opening of the housing and the coupling member of the second pole can have a groove to be engaged with the tongue. Because of this design, the tripping devices of a multi-pole circuit breaker can be brought into engagement with one another without difficulty, while at the same time the requirements for the production of such coupling elements are easy to master.
  • the cross member provided for connecting the contact arrangements can be firmly connected to the contact arrangement of the first pole and the second pole can be designed to be slidable onto the traverse.
  • the crossmember can consist of detachable sections, one of which is attached to the first pole and another is assigned to the second pole and which can be brought into positive engagement with one another.
  • This embodiment is particularly suitable for those cases in which circuit breakers with a changing number of poles are to be produced. In this case, both the contact arrangements of the individual poles and their tripping devices come into positive engagement with one another when the individual housings are joined together.
  • FIG. 4 in which a multi-pole low-voltage circuit breaker 10 with two poles is shown. This has a middle or first pole 12 and a left or second pole 14 which is only partially shown. Each pole has its own insulating material housing. The two housings are connected to one another and form a single low-voltage circuit breaker 10 of the MCCB type. While the embodiment according to FIG. 4 essentially shows a two-pole arrangement, a three-pole arrangement can also be used. For this purpose, a right pole is added to the two poles shown in FIG. 4. The left pole and the right pole are similar to each other.
  • the middle pole is provided with a drive device 16 which has an actuating handle 18 which can be moved between an on position and an off position.
  • the drive device 16 is only present at the central pole 12. If right and left poles are used, they do not have any drive devices as the middle pole has. Thus, the multi-pole circuit breaker has only one drive device.
  • the center pole also includes a movable contact assembly 20 that has electrodynamically opening contacts that are movable between a closed position and an open position.
  • a movable contact assembly 20 that has electrodynamically opening contacts that are movable between a closed position and an open position.
  • An example of an electrodynamically opening contact system is described in US-A-4409573.
  • a lever mechanism 22 connects the drive device 16 and the contact arrangement 20, so that the contacts can be opened and closed by actuating the actuating handle 18.
  • the middle pole 12 contains a tripping device 23c, which is arranged in the housing and is used to trip the circuit breaker 10.
  • the movement of the actuating handle 18 from the switch-off position to the switch-on position closes the contacts and stores the energy for mechanical separation of the switch contacts when the triggering device responds. If the trigger shaft 25C of the trigger device 23C is rotated, the stored energy is released to open the contacts.
  • only the central pole contains the drive device 16, which stores the energy for switching off.
  • a left pole 14 is used, its release device 23L detects the release mechanism 23C of the middle pole 23, so that each pole can release the release energy.
  • the trigger devices 23L and 23C can be interconnected by a tongue and groove arrangement or in any other suitable manner, e.g. B. be connected by a pin connection. In this way, when the triggering device responds for any reason, the other triggering devices are actuated automatically and at the same time, thereby opening the switching contacts.
  • the contact arrangement 20 is provided with a clamp 24, through which a cross member 26 extends.
  • the traverse is made of a very strong insulating material such. B. made of glass fiber epoxy.
  • the cross member 26 can be a single part or can consist of one section per pole, the sections being appropriately positively engaged with one another. It has proven to be economically advantageous to manufacture the cross member 26 as a single part.
  • the cross member 26 fits into the bracket 24 and is preferably fastened therein by a deformation of the bracket 24 around the cross member 26. This can be done in the form of depressions or other toothing or by means of a screw or a tensioning strap. A slight toothing or corrugation has proven to be simple and effective in order to connect the cross member 26 to the clamp 24.
  • the crossmember 26 moves together with the contact arrangement 20. Therefore, a movement of the crossmember 26 takes place regardless of whether the contacts open due to a strong overcurrent or a fault current or whether the movement is effected by means of the actuating handle 18 or whether tripping occurs due to an overcurrent.
  • the second or left pole 14 is designed similarly to the right pole 12, with the difference that the left pole has no drive device.
  • the left pole contains a movable contact assembly 28 with a bracket 30.
  • the bracket 30 is simply slid over the cross member 26 so that it is easy to move a pole inflict.
  • the left pole 14 also contains means 32 for setting the tripping current and means 34 for tripping the pole by hand.
  • the first and second poles also have tripping devices 23C and 23L which communicate with each other so that when one pole is tripped, the other is also tripped.
  • the crossmember 26 extends from the first pole 12 to the second pole 14.
  • the crossmember 26 extends from the clamp 24 of the main pole through an opening in the housing of the main pole 12, then through an opening in the housing of the main pole 12 second pole 14 and into the bracket 30 of the contact arrangement 28 of the second pole 14.
  • This construction transmits movement of each contact arm to the other contact arm through the cross member 26.
  • pressing the trigger button 34 releases the contact assembly 28 so that the contacts open.
  • the contact arrangement 20 is connected to the contact arrangement 28 by the crossmember 26, the contact arrangement 20 also opens.
  • the opening force is determined by the. Transverse to the other contact arrangement for simultaneous opening of the contacts when one of the contact arrangements is caused to open by an overcurrent. Even when the actuating handle 18 is operated, both contact arrangements are opened or closed simultaneously due to their connection by the cross member 26. In all cases, the contact arrangements can only move simultaneously due to their connection by the cross member 26.

Landscapes

  • Breakers (AREA)

Claims (4)

1. Interrupteur multipolaire de puissance (10) présentant les particularités suivantes :
- un premier pôle (12) avec un boîtier en matière isolante et un cadre qui y est monté ;
- un dispositif d'entraînement (16) monté sur le cadre, avec une poignée de manoeuvre (18) débordant à travers une ouverture du boîtier ;
- un dispositif à contacts (20) à commandes par le dispositif d'entraînement ;
- un dispositif de déclenchement (23C, 23L) pour la séparation automatique des contacts des dispositifs à contacts (20) en fonction de conditions défectueuses,
- un second pôle (14) avec un boîtier en matière isolante et avec un dispositif à contacts qui y est agencé, ainsi qu'avec un dispositif de déclenchement (23L) ;
- des éléments d'accouplement (25C, 25L) accessibles dans des ouvertures ménagées dans les boîtiers du premier et du second pôle, en vue de la liaison des deux dispositifs de déclenchement (23C, 23L) des deux pôles;
- un agencement pour la commande simultanée des dispositifs à contacts (20, 28) du premier et du second pôle (12, 14);
- caractérisé par les particularités supplémentaires suivantes :
- les éléments d'accouplement (25C, 25L) du premier et du second pôle (12, 14) qui servent à relier les dispositifs de déclenchement (23C, 23L), sont réalisés de manière à coagir directement entre eux par formes complémentaires ;
- les dispositifs à contacts (20, 28) du premier et du second pôle (12, 14) sont reliés par une traverse (26) en vue du déplacement commun des contacts d'enclenchement des deux pôles.
2. Interrupteur de puissance selon la revendication 1, caractérisé par le fait que l'élément d'accouplement de l'un (12) des pôles comporte une languette en saillie de l'ouverture du boîtier et l'élément d'accouplement du second pôle (14) comporte une gorge destinée à venir en prise avec la languette.
3. Interrupteur de puissance selon la revendication 1, caractérisé par le fait que la traverse (26) est reliée rigidement avec le dispositif à contacts (20) du premier pôle, et que le second pôle (14) est réalisé de manière à pouvoir être engagé par glissement sur la traverse (26).
4. Interrupteur de puissance selon la revendication 1, caractérisé par le fait que la traverse (26) est constituée par des éléments partiels susceptibles d'être accouplés entre eux, et dont l'un est fixé au premier pôle (12) alors qu'un autre élément est associé au second pôle (14), et que les éléments partiels sont susceptibles d'être amenés en prise entre eux par complémentarité de formes.
EP85730128A 1984-10-01 1985-09-17 Interrupteur multipolaire avec des boîtiers séparés en matière isolante pour chaque pôle Expired - Lifetime EP0177438B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US656233 1984-10-01
US06/656,233 US4680564A (en) 1984-10-01 1984-10-01 Multi-pole molded case circuit breaker with a common contact operating crossbar member

Publications (3)

Publication Number Publication Date
EP0177438A2 EP0177438A2 (fr) 1986-04-09
EP0177438A3 EP0177438A3 (en) 1987-08-12
EP0177438B1 true EP0177438B1 (fr) 1990-08-01

Family

ID=24632197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85730128A Expired - Lifetime EP0177438B1 (fr) 1984-10-01 1985-09-17 Interrupteur multipolaire avec des boîtiers séparés en matière isolante pour chaque pôle

Country Status (5)

Country Link
US (1) US4680564A (fr)
EP (1) EP0177438B1 (fr)
JP (1) JPS6185744A (fr)
CA (1) CA1241987A (fr)
DE (1) DE3578970D1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812934A1 (de) * 1988-04-19 1989-11-02 Sursum Elektrizitaetsgesellsch Mehrphasiger schutzschalter
FR2682531B1 (fr) * 1991-10-15 1993-11-26 Merlin Gerin Disjoncteur multipolaire a blocs unipolaires.
US5585609A (en) * 1994-09-28 1996-12-17 Siemens Energy & Automation, Inc. Circuit breaker with movable main contact multi-force-level biasing element
DE19530447A1 (de) * 1995-08-18 1997-02-20 Abb Patent Gmbh Installationsschaltgerät
EP1187158B1 (fr) * 2000-03-17 2004-12-15 Mitsubishi Denki Kabushiki Kaisha Disjoncteur
KR100616084B1 (ko) 2004-10-07 2006-08-25 엘에스산전 주식회사 배선용차단기의 압트립 장치
KR101413859B1 (ko) 2013-01-04 2014-07-01 현대중공업 주식회사 다극 배선용 차단기
US9704684B2 (en) 2014-10-08 2017-07-11 General Electric Company Circuit breaker crossbar assembly
BR112021011037A2 (pt) 2018-12-21 2021-08-31 Weg Drives & Controls Automação Ltda. Módulo de interrupção em caixa moldada para disjuntor em caixa moldada e disjuntor em caixa moldada modular

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2889428A (en) * 1955-05-18 1959-06-02 Square D Co Multipole circuit breaker
US3012118A (en) * 1958-10-29 1961-12-05 Ite Circuit Breaker Ltd Current limiting circuit breaker
US3127488A (en) * 1960-07-18 1964-03-31 Ite Circuit Breaker Ltd Current limiting circuit breaker having both contacts movable
US3530414A (en) * 1969-02-26 1970-09-22 Westinghouse Electric Corp Circuit breaker with improved trip means
US3842376A (en) * 1971-08-02 1974-10-15 Heinemann Electric Co Fastener and circuit breaker case
US3783428A (en) * 1971-10-28 1974-01-01 Chase Shawmut Co Low-voltage fuse with blown fuse indicator
US3815059A (en) * 1972-12-01 1974-06-04 Westinghouse Electric Corp Circuit interrupter comprising electromagnetic opening means
DE2349600C3 (de) * 1973-10-03 1980-08-14 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Kupplung für einen mehrpoligen Leitungsschutzschalter
US3946346A (en) * 1974-04-29 1976-03-23 Square D Company Current limiting circuit breaker
US4072916A (en) * 1975-12-19 1978-02-07 I-T-E Imperial Corporation Stacked circuit breakers having high interrupting capacity
US4066989A (en) * 1976-04-28 1978-01-03 I-T-E Imperial Corporation Trip unit tie bar having integral flexibly connected links
US4088973A (en) * 1976-04-28 1978-05-09 Gould Inc. Unitized combination starter
US4097830A (en) * 1976-07-06 1978-06-27 I-T-E Imperial Corporation Latch for contact operating mechanism
US4071836A (en) * 1976-09-07 1978-01-31 Square D Company Current limiting circuit breaker
DE2810987C3 (de) * 1978-03-10 1985-01-03 Siemens AG, 1000 Berlin und 8000 München Niederspannungsschutzschalter mit einem elektromagnetischen Auslöser
US4232282A (en) * 1978-12-18 1980-11-04 Gould Inc. Circuit breaker having means to facilitate assembly thereof
US4270035A (en) * 1979-07-16 1981-05-26 Heinemann Electric Company Snap on mounting clip for circuit breakers
US4346357A (en) * 1979-12-17 1982-08-24 Gould Inc. Current-limiting circuit breaker adapter
US4409573A (en) * 1981-04-23 1983-10-11 Siemens-Allis, Inc. Electromagnetically actuated anti-rebound latch
JPS58131625A (ja) * 1982-01-30 1983-08-05 松下電工株式会社 多極型回路遮断器
US4550300A (en) * 1984-05-10 1985-10-29 General Electric Company Latch release mechanism for molded case electric circuit breakers

Also Published As

Publication number Publication date
US4680564A (en) 1987-07-14
EP0177438A2 (fr) 1986-04-09
DE3578970D1 (de) 1990-09-06
EP0177438A3 (en) 1987-08-12
CA1241987A (fr) 1988-09-13
JPS6185744A (ja) 1986-05-01

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