EP0079818B1 - Appareil contacteur comportant des moyens d'ouverture automatique des circuits de puissance et un dispositif de commande locale - Google Patents

Appareil contacteur comportant des moyens d'ouverture automatique des circuits de puissance et un dispositif de commande locale Download PDF

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Publication number
EP0079818B1
EP0079818B1 EP82402019A EP82402019A EP0079818B1 EP 0079818 B1 EP0079818 B1 EP 0079818B1 EP 82402019 A EP82402019 A EP 82402019A EP 82402019 A EP82402019 A EP 82402019A EP 0079818 B1 EP0079818 B1 EP 0079818B1
Authority
EP
European Patent Office
Prior art keywords
coil
control member
contactor apparatus
electromagnet
sudden
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
Application number
EP82402019A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0079818A1 (fr
Inventor
Christian Thomas
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9263812&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0079818(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Priority to AT82402019T priority Critical patent/ATE11710T1/de
Publication of EP0079818A1 publication Critical patent/EP0079818A1/fr
Application granted granted Critical
Publication of EP0079818B1 publication Critical patent/EP0079818B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
    • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair
    • 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
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S200/00—Electricity: circuit makers and breakers
    • Y10S200/42—Contact welding considerations

Definitions

  • the invention relates to a contactor device comprising an electromagnet for controlling the power contacts and having means for automatic opening of these power contacts which each respond, on the one hand, to the appearance of short currents -circuit in one of the power circuits thanks to a first coil and a striker, and, on the other hand, to the appearance of overload currents either instantaneous or of greater duration thanks to a second coil associated with a paddle and, respectively, to a bimetallic strip, each power contact being able to cooperate, after percussion, with a locking member which keeps it in the open position, this device having a local control member capable of resetting the opening means automatic and to close a control switch placed in series with the electromagnet winding.
  • Such contactors which are intended to simultaneously supply the power to consumer devices and their rapid protection, as well as that of the lines which supply them, avoid the need for series mounting of two devices each having a system of switches, the one is intended to perform the on and off service and the other of which is intended to provide protection; we know, in fact, that such an association between these two switch systems requires coordination which is difficult to obtain because of the radically different properties which are required both for their closing powers and for their speeds d 'opening. This coordination is all the more difficult to achieve since each of these types of switches can be offered to the public by separate suppliers and their properties are not always known to users.
  • the invention as well as other aims and other measures aiming at complementary results, such as the adaptation to the current of use of the current detecting members using coils and / or bimetallic strips which act on the third mechanism, will be better understood on reading the description below.
  • an electromagnet 1 activates a or a multiplicity n of power contacts such as 2; this actuation is unidirectional thanks to the fact that a return spring 36 of a frame 29 of this electromagnet pushes without moving a movable contact 12 of each power contact against the action of a contact pressure spring 15 which is based on the housing 20 of the device and which tends to close the contact; this unidirectional action is indicated by f when the armature is attracted and the contact closes, and if not.
  • the electromagnet comprises a coil 3 which is placed in series with a control switch 4 in a control circuit 7 having terminals 6 and 5 able to receive an external voltage when the power contacts must be closed.
  • the electromagnet and the power contacts are analogous to those of a contactor in order to perform the corresponding functions.
  • a power circuit 8, passing through the power contact 2 is included between the connection terminals 10 and 9 intended to be connected to a network and respectively a consumer device not shown.
  • the circuit 8 comprises, in series with the contact 2, a winding 11, with which is associated a striker 28 which is moved very quickly when the circuit is traversed by currents such as those which appear during a short-circuit frank in downstream of the device.
  • This striker can push the movable contact 12 in this case, independently of the armature of the electromagnet, and to an open position greater than that given to it by the springs of the armature. This action is identified by the reference a.
  • the movable contact 12 cooperates with an elastic lock 16 which is capable of retaining it to prevent reclosing of the circuit after the appearance of such a defect.
  • the circuit 8 also comprises in series a second winding 13 which cooperates in a known manner with a pallet 34 or a plunger core, not shown, so as to communicate to them a rapid movement indicated by b, when there appear in this circuit high instantaneous currents such than those encountered during short-term overloads or during impedant short-circuits.
  • a bimetallic strip 14 is also placed in series in circuit 8 and provides a deflection indicated by c when currents appear in this circuit, less important than the preceding ones, but of greater duration, such as those which develop during weak overloads. but prolonged.
  • a first resettable trigger mechanism 31 is mechanically associated, by a transmission means represented diagrammatically by 32, with a local control member 18 and receives from the latter a unidirectional elastic force delivered by a spring 35.
  • This mechanism 31, of which the transmission means 32 is a part, is capable of retaining, by an action m, the local control member in a first stable position F which is communicated to it from the outside, for example by manual action on this member ; the member 18 is released by an action m when this first mechanism 31 is triggered by an internal path p of the device described later.
  • This first mechanism 31 also governs the closing and opening states of the control switch 4 by actions e and respectively é, the closure being only operated when this mechanism retains the position F of the control member.
  • the electromagnet 1 can be excited by an order signal applied to the terminals 5 and 6 in order to close the power contacts 2.
  • the control member 18 also cooperates, for example, by the same transmission 32, with a second abrupt trigger mechanism 17 by contact actions represented by j.
  • This second abrupt trigger mechanism 17 is capable of delivering the action p when it is triggered by one of two movements g or d supplied by internal channels during an internal automatic opening process of the device. .
  • the action generally represented by g results from the excitation of the coil 11 by a very large current and could as such be delivered by the striker 28 itself or by a pallet (not shown) which would be associated to coil 11.
  • the action g is delivered by the lock 16 as soon as the latter has taken a position corresponding to the effective execution of the locking of the movable contact 12, so that the appearance of the action g actually corresponds to the appearance, in the coil 11, of a current of sufficient intensity for the striker to bring the movable contact into an extreme locked opening position.
  • the action represented by d is delivered by a third abrupt trigger mechanism 19, when this is released by the appearance of one of the two actions b or c defined above.
  • These two actions g and d are unidirectional, that is to say that they transmit movements without permanent connection between two parts, preferably by a push.
  • the two abrupt trigger mechanisms 17,19 are reset by each other using the local control member 18 by actions represented by and K respectively when a particular reset position R is communicated to that -this; this same rearming movement also exerts an unlocking action h transmitted by the second mechanism 17 to release the movable contact 12 from the elastic lock 16.
  • the rearming of the second mechanism 17 can only be carried out if the third mechanism 19 is in a state of being reset, that is to say in the absence of actions b and c; as, for the reset position, the switch 4 is open, the power contact 2 is necessarily open so that only an action c developed by a bimetallic strip 14 still hot can in fact prevent the immediate reset of the second mechanism 19.
  • the local control member 18 moves between two opposite extreme positions, F corresponding to the closing of the switch 4 and R corresponding to the reset operation.
  • a stable position 0 of local external opening, for example manual, of the switch 4 is placed between these two extreme positions. This opening of the switch 4 is carried out due to the fact that when the local control member leaves the position F, an action m is established between the transmission 32 and the first mechanism 31.
  • the second abrupt-release mechanism 17 immediately causes the switch 4 to open by the first mechanism 31, but then takes an intermediate state triggered which gives the local control member 18 by action j a stable intermediate position D between the positions F and O; this position cannot be given to the local control member by manual action thereon.
  • the positions F, D and 0 are therefore all three stable positions of the control member so that this member 18 not only reproduces an exact image of the states of the apparatus, but also informs the user of the nature of the events. who produced them: local external action or internal automatic opening.
  • the position R is unstable and can only be obtained by maintaining a permanent force, manual or otherwise, on the local control member and, possibly, against a second elastic action of a spring represented by 30.
  • the local control member assumes an automatic triggered position D; resetting the device requires that this control member be moved, externally, first to position 0 then to position R (and then be brought back to position F).
  • the bimetallic strip could not deform sufficiently, and the coil 13 did not have sufficient time to act, the third mechanism 19 is not released, the second mechanism has d 'was first able to reset, (action j), and was then able to release the movable contact 12 from its lock 16 (action h); the switch 4 being able to be closed by the first mechanism 31, thanks to the action e, only when the local control member reaches the position F, this closing will cause (if a voltage is always present at the terminals 5, 6 ) an excitation of the electromagnet and therefore the closing of the power contact 2.
  • the coil 11 will excite the striker 28 which will again open the movable contact 12 and cause the release of the first mechanism with abrupt release, which will cause the immediate reopening of the switch 4 and therefore that of the power contacts 2.
  • the mechanism 31 maintains the action e of opening the contact 4 so that the voluntary maintenance of the member 18 in position F does not produce, in the event of a permanent fault, the forced reclosing of the contact 4.
  • the unlocking h and reset K actions or displacements communicated to the latch 16 and respectively to the third abrupt release mechanism 19 follow paths distinct from those which are followed by the release actions g and respectively d.
  • the invention however includes a variant shown in FIG. 1 b in which the actions g and h and respectively d and K are transmitted by two channels q, q and respectively r, r which therefore use the same means of transmission, represented by the whole of the solid line and the dotted line.
  • the transmission of orders q, q and that of orders r, r must occur without mechanical connection between 11 and 17 or between 19 and 17 for example by pushing.
  • the latch 16 transmits the action q to the mechanism 17 and receives from it the action q ; the lock 16 can in turn lock either the movable contact 12 directly, or indirectly the latter, by attaching a part which communicates the displacement to it, for example the striker 28 or an action transmission rod a.
  • FIG. 2 shows how the various members are respectively distributed in a housing and how they cooperate with each other.
  • the trigger mechanisms 31, 17 and 19 as well as the transmission part 32 are arranged in an upper region 37 of the housing which carries a front face 26 and the local control member 18 cooperating with a scale 33 marked with positions F, D, 0 and R.
  • the switching members comprising the power contacts 2, the coils 11 and the latches 16 are distributed in a central region 38 and between this upper region 37 and a lower fixing face 25 opposite the front face 26.
  • the main parts of the electromagnet 1 common to all the contacts 2 are arranged in a first lateral region 39 lying between the region 37 and the rear face 25.
  • the set of coils 13 and bimetallic strips 14 is arranged in a second lateral region 40 opposite the first lateral region.
  • the apparatus comprises several associated sub-assemblies, namely: a base 20 carrying the rear face 25 on which a multiplicity n of cells 41 open capable of receiving removable cartridges 24 each comprising a power contact 2, a coil 11, a striker 28 and a latch 16.
  • a bearing 42 of the base receives a mechanical plate 22 containing the members 31, 32, 17, 18 and at least one part, fixed or mobile, of the control switch 4, which allows easy prior assembly of these organs.
  • a removable sub-assembly 21 placed laterally receives at least part of the electromagnet 1 comprising for example a fixed yoke and giving access to the coil 3 so as to allow the replacement thereof, the coil can also come with this subset.
  • the moving parts of the electromagnet 1 such as the armature 29, the return spring 36 and a movable part or pusher integral with, or driven by, the armature will then be fixed on the base of the device so to be located opposite all of the movable contacts 12 of the power contacts 2, adjustment screws disposed on this movable pusher, respectively opposite each movable contact, will also ensure that the actuation of these contacts is done simultaneously.
  • the electromagnet 1 comprises a fixed yoke 44 and the movable armature 29 cooperates with a pusher 45 having a first arm 46 and a second arm 47.
  • the first arm 46 acts on a rocker arm 48 capable of separating the movable contact 12 from the fixed contacts 49, 50 of the power contact 2.
  • the striker 28 transmits its movement to a second pivoting pusher 51 retained by a spring 52 and having a first arm 53 capable of lifting the same rocker arm 48, independently of 46; a second arm 54 cooperates with a surface 55 of a latch 16 which is compressed by a spring 56 and which has a movement transmission end 57.
  • a dotted line surrounding by 24 parts which have just been described represents the content of the power contact cartridge 24.
  • the second pusher 51 When the coil 11 attracts the rapid striker 28, the second pusher 51 is tilted and lifts the rocker arm 48; thanks to the erasure of the end 54, the surface 55 is released and the latch 16 maintains by a lateral bearing 58 the second pusher 51 in the position it has just taken. At the same time, the end 57 transmits an action q to the second snap mechanism 17.
  • a removable protection module 23 contains the bimetallic strips 14 and their heaters 58 as well as the coils 13 and their pallets 59.
  • the deflections c and displacements b are transmitted to the third mechanism with abrupt release 19, which includes a pusher 60, receiving actions b and c, and cooperating with a locking lever 61 subjected to a spring 62 to lock and hold by its spout 63 a flange 67 which belongs to a rod 64.
  • the latter is compressed by a spring 65 and has an end 66 capable of communicating at the second abrupt trigger mechanism 17 an action r.
  • the second abrupt trigger mechanism 17 comprises a pusher 68 receiving the actions q and r and cooperating with a locking lever 69 subjected to a spring 70 to lock by its beak 71 a flange 72 which belongs to a rod 73.
  • the latter is compressed by a spring 74 and has, on the one hand, a heel 75 capable of communicating to the first mechanism with abrupt release 31 an action p, and has, on the other hand, an end 76 placed opposite a surface 77 of the pusher 68.
  • the rod 73 also has an external stud 78 capable of communicating and receiving actions or movements j and respectively by cooperation with a moving part 32.
  • the first abrupt release mechanism 31 includes a locking lever 79 subjected to a spring 80 which gives it a rest position by pressing on a stop 81.
  • This lever 79 has an insulating push button 84 capable of opening the movable contact 82 of the control switch 4 and a locking tooth 83 able to cooperate with the moving part 32 to communicate to it and to receive from it actions m and respectively m.
  • the movable part 32 which is subjected to the return spring 35 and which is integral with the local control member 18 has a finger 85 capable of cooperating with a spring 30 and on the other hand a multiplicity of ramps and surfaces capable of cooperating with the tooth 83 and with the stud 78.
  • the ramp 89 escapes the stud, which it pushes back slightly, so that the latter, after sliding against a surface 90, abuts against the start of a third inclined ramp 91; the part 32 is then retained in a stable position O corresponding to the opening of the device externally. In this position O the finger 85 comes in the vicinity of the spring 30. If a movement of direction S is given to the part 32 by the control member 18, the latter can reach an unstable position R opposite to F for which the spring 30 is compressed; in this last movement, the inclined ramp 91 exerts on the stud 78 a reset action j which pushes it downwards in the figure.
  • the displacement of the rod 73 is transmitted by the heel 76 to the surface 77 and to the pusher 68 which in turn transmits the movement received towards the ends 57 and 66.
  • the second abrupt trigger mechanism 17 resets during this operation when the spout 71 snaps onto the rim 72.
  • the movements of the latch 16 and of the rod 64 then make it possible, on the one hand, to unlock the latch 54 and allow the contact 2 to be able to close, and, on the other hand hand, rearm the third mechanism 19 if the bimetallic strips are cooled.
  • the device can implement measures suitable for effecting a forced opening of the power contacts 2, in particular in the event of any welds.
  • Such forced opening is operated either automatically during a fault tripping process, or by an action, for example manual, on the local control member, between positions F and O.
  • the piece 32 has a fourth ramp 92 capable of cooperating between positions F and O, with a transmission rod or other means 93 to exert on the arm 47 of the lever 45 an action comparable to that which is exerted by the spring 36, but d 'higher intensity.
  • a voluntary movement of the part 32 in direction S, by action on the control member 18, can obviously be given from position F and towards position 0 to put the device out of service.
  • the ramp 86 repels the tooth 83 by producing a sudden tilting of the lever which produces the instantaneous opening of the switch 4.
  • the displacements can be obtained using guide surfaces which are not shown; displacements along neighboring or curved trajectories could also be used and obtained by known means, for example if the part 32 is a disc carrying the ramps and pivoting about an axis YY '.
  • the invention can be carried out using locking or tripping means which operate the same functions or which react in a manner comparable to those which have been shown diagrammatically by way of nonlimiting example.

Landscapes

  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Keying Circuit Devices (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Push-Button Switches (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fats And Perfumes (AREA)
  • Contacts (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Relay Circuits (AREA)
  • Dry Shavers And Clippers (AREA)
EP82402019A 1981-11-09 1982-11-03 Appareil contacteur comportant des moyens d'ouverture automatique des circuits de puissance et un dispositif de commande locale Expired EP0079818B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82402019T ATE11710T1 (de) 1981-11-09 1982-11-03 Schaltgeraet mit anordnungen zur selbstunterbrechung von leistungsstromkreisen und mit einer oertlichen antriebsvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8120919 1981-11-09
FR8120919A FR2516297A1 (fr) 1981-11-09 1981-11-09 Appareil contacteur comportant des moyens d'ouverture automatique, des circuits de puissance et un dispositif de commande locale

Publications (2)

Publication Number Publication Date
EP0079818A1 EP0079818A1 (fr) 1983-05-25
EP0079818B1 true EP0079818B1 (fr) 1985-02-06

Family

ID=9263812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82402019A Expired EP0079818B1 (fr) 1981-11-09 1982-11-03 Appareil contacteur comportant des moyens d'ouverture automatique des circuits de puissance et un dispositif de commande locale

Country Status (15)

Country Link
US (1) US4495538A (sv)
EP (1) EP0079818B1 (sv)
JP (1) JPS58103729A (sv)
AT (1) ATE11710T1 (sv)
BR (1) BR8206474A (sv)
CA (1) CA1182202A (sv)
DE (1) DE3262238D1 (sv)
ES (1) ES8308144A1 (sv)
FI (1) FI70756C (sv)
FR (1) FR2516297A1 (sv)
HK (1) HK77285A (sv)
IN (1) IN158467B (sv)
NO (1) NO159127C (sv)
SG (1) SG38685G (sv)
ZA (1) ZA828014B (sv)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8322511V0 (it) * 1983-07-27 1983-07-27 Sace Spa Interruttore elettrico limitatore di corrente con telecomando idoneo per un elevato numero di manovre.
FR2570872B1 (fr) * 1984-09-27 1988-08-26 Telemecanique Electrique Dispositif de commutation a composition variable
FR2574218B1 (fr) * 1984-12-03 1987-03-20 Merlin Gerin Effecteur pour une installation modulaire de distribution domestique et de gestion d'energie electrique
FR2598027B1 (fr) * 1986-04-23 1990-10-12 Telemecanique Electrique Appareil contacteur inverseur protege conte les surintensites de courant
US4691180A (en) * 1986-06-19 1987-09-01 Westinghouse Electric Corp. Circuit breaker with electrical disconnect means
JPH01103103A (ja) * 1987-10-15 1989-04-20 Ohbayashi Corp 動力制御システム
FR2639144B1 (fr) * 1988-11-17 1993-05-28 Telemecanique Electrique Mecanisme a serrure pour contacteur-limiteur
US4965694A (en) * 1989-03-30 1990-10-23 Square D Company Remote controlled circuit breaker system
IT1231103B (it) * 1989-08-09 1991-11-18 Sace Spa Dispositivo autocoordinato di manovra e protezione per apparecchiature elettriche.
FR2664763B1 (fr) * 1990-07-13 1994-03-04 Telemecanique Appareil et systeme pour l'alimentation protegee d'un moteur triphase a deux sens de marche.
FR2818820B1 (fr) * 2000-12-21 2003-03-07 Eads Airbus Sa Systeme de distribution d'energie electrique et contacteur pour un tel systeme
AU2002950581A0 (en) * 2002-08-02 2002-09-12 Wayne Callen Electrical safety circuit
US7417519B2 (en) * 2004-09-30 2008-08-26 Rockwell Automation Technologies, Inc. Emergency stop relay combination
DE102004062269A1 (de) * 2004-12-23 2006-07-13 Siemens Ag Verfahren und Vorrichtung zum sicheren Betrieb eines Schaltgerätes
EP2333804B1 (fr) * 2009-12-11 2012-08-22 Schneider Electric Industries SAS Dispositif de coupure à indicateur de soudure des contacts
FR2953986B1 (fr) * 2009-12-11 2012-05-18 Schneider Electric Ind Sas Dispositif de coupure a indicateur de soudure des contacts
WO2020184108A1 (ja) * 2019-03-12 2020-09-17 アルプスアルパイン株式会社 電磁駆動装置及び操作装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE738413C (de) * 1937-04-10 1943-08-14 Aeg Schuetz mit Ausloesung durch UEberstrom
DE740887C (de) * 1941-01-07 1943-10-30 Aeg Mehrpoliges UEberstromschuetz
DE735838C (de) * 1941-11-19 1943-05-29 Aeg Mehrpoliges elektromagnetisch betaetigtes Schuetz mit Kurzschlussausloesung
JPS5341785B2 (sv) * 1973-05-21 1978-11-07
US3921109A (en) * 1974-06-20 1975-11-18 Westinghouse Electric Corp Circuit-interrupter
NZ181021A (en) * 1975-06-16 1978-12-18 Westinghouse Electric Corp Motor controller: two switch contact open positions one unlatched
US4149053A (en) * 1976-10-26 1979-04-10 Cutler-Hammer, Inc. Safety disconnect electric switch
US4247745A (en) * 1978-09-13 1981-01-27 Westinghouse Electric Corp. Vacuum-type contactor assembly
US4258343A (en) * 1979-02-12 1981-03-24 Gould Inc. Unitized combination starter
IT1137121B (it) * 1981-04-02 1986-09-03 Sace Spa Interruttore elettrico,particolarmente limitatore di corrente

Also Published As

Publication number Publication date
CA1182202A (fr) 1985-02-05
EP0079818A1 (fr) 1983-05-25
JPH0127536B2 (sv) 1989-05-30
NO823712L (no) 1983-05-10
IN158467B (sv) 1986-11-22
ES517207A0 (es) 1983-08-16
JPS58103729A (ja) 1983-06-20
FR2516297A1 (fr) 1983-05-13
NO159127C (no) 1988-11-30
FI823843L (fi) 1983-05-10
BR8206474A (pt) 1983-09-27
FI823843A0 (fi) 1982-11-09
FR2516297B1 (sv) 1984-01-06
FI70756C (fi) 1986-10-06
SG38685G (en) 1987-07-03
HK77285A (en) 1985-10-18
US4495538A (en) 1985-01-22
ZA828014B (en) 1983-08-31
ATE11710T1 (de) 1985-02-15
DE3262238D1 (en) 1985-03-21
ES8308144A1 (es) 1983-08-16
FI70756B (fi) 1986-06-26
NO159127B (no) 1988-08-22

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