EP1047090B1 - Begrenzende Schutzschalter mit Zusatzenergiespeicher - Google Patents

Begrenzende Schutzschalter mit Zusatzenergiespeicher Download PDF

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Publication number
EP1047090B1
EP1047090B1 EP00410027A EP00410027A EP1047090B1 EP 1047090 B1 EP1047090 B1 EP 1047090B1 EP 00410027 A EP00410027 A EP 00410027A EP 00410027 A EP00410027 A EP 00410027A EP 1047090 B1 EP1047090 B1 EP 1047090B1
Authority
EP
European Patent Office
Prior art keywords
support
finger
circuit breaker
spring
pole
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
EP00410027A
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English (en)
French (fr)
Other versions
EP1047090A1 (de
Inventor
Alain Brouillat
Jean-Philippe Herpin
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1047090A1 publication Critical patent/EP1047090A1/de
Application granted granted Critical
Publication of EP1047090B1 publication Critical patent/EP1047090B1/de
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
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • H01H77/104—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement with a stable blow-off position
    • 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
    • H01H71/504—Manual reset mechanisms which may be also used for manual release provided with anti-rebound means

Definitions

  • the invention relates to a low-voltage limiting circuit breaker, and more particularly to a high-voltage low-voltage limiting circuit breaker.
  • the spring of the bistable device has several functions. It is intended first to ensure a contact pressure between the fixed contact member and the contact finger when the circuit breaker is closed, which is relatively independent of the state of wear and manufacturing tolerances of the circuit breaker. This contact pressure is also decisive for the repulsion threshold beyond which the electromagnetic forces will cause the finger to its repulsed position. When the finger has pivoted beyond the dead point, the spring is also used to confirm the repulsion and / or to prevent a rebound of the finger, since it prohibits the return of the finger in non-repulsed position.
  • the energy accumulator of the opening mechanism must overcome the resistance of the spring of the bistable device.
  • this passage should preferably be made at the beginning of the opening stroke, in order to limit the size of the compartment of the circuit breaker where the contacts are located.
  • the support must pivot itself quickly enough, at the passage of the intermediate tilting position, so that the restoring force of the spring of the bistable device does not give rise, after the passage of the dead point, to a significant approximation between the finger and the fixed contact.
  • the spring of the opening mechanism must simultaneously accelerate the support and compress the spring of the bistable device. In energy terms, it must simultaneously supply the spring of the bistable device with the energy necessary for it to reach its state of maximum potential energy, and provide the support with the kinetic energy necessary for its rapid movement towards the open position. .
  • the spring of the opening mechanism must also ensure only the rapid opening of the circuit breaker in case of tripping over low overcurrent.
  • circuit breaker To reconcile these constraints, there is generally provided a powerful opening energy accumulator. However this solution is not without inconvenience, since the energy released during the opening must be dissipated in the opening limit stops, so that the power of the spring is decisive for the cost and bulk. circuit breaker. In addition, it is necessary to provide different opening mechanisms according to the number of poles of the circuit breaker. Remember that not only are monopolar, three-pole and four-pole circuit breakers, but also, for high ratings where each phase is connected to two poles in parallel or in series, hexapole or even octopole circuit breakers.
  • the invention therefore aims to overcome the disadvantages of the state of the art, and in particular to allow the use of movable contact members with identical bistable mechanisms for limiting circuit breakers whose opening mechanisms have variable characteristics, particularly in opening race start. It also aims to allow a sizing of the opening mechanism of a limiter circuit breaker, independent of the number of poles. Another object of the invention is to make the acceleration at the beginning of the opening stroke of the support of a movable contact member relatively independent of the type of opening mechanism used. Another object of the invention is to limit the energy to be dissipated at the end of the opening stroke, without significantly increasing either the opening stroke or the overall size of the device. Another goal is to minimize the energy needed during opening.
  • each pole furthermore comprises an auxiliary mechanism comprising one or more energy accumulators reminding the support towards its open position on all or part of the run of the support between its closed position and the intermediate tilting position, but no longer beyond the intermediate tilting position. It is then possible to adjust the acceleration at the start of the opening stroke by judiciously choosing the power of the second accumulator.
  • the energy accumulator (s) of the auxiliary mechanism do not act on the support when it is between its intermediate position tilting and its open position. Beyond the tilting position, the support does not need a lot of energy to reach its open position, so that the contribution of the second battery is no longer necessary.
  • an accumulator providing energy to the support over part of its stroke at least between the closed position and the intermediate tilting position, and storing energy on at least part of the race support between the intermediate position and the open position.
  • This accumulator may for example comprise a spring whose rest position corresponds to the relative position of tilting, acting in compression below and in traction beyond. This further limits the energy remaining to be dissipated in the end stops of the opening mechanism at the end of the opening stroke.
  • the energy accumulator (s) of the auxiliary mechanism of each pole are such that during the displacement of the movable support of the pole considered, they release an energy greater than or equal to that necessary to bring the bistable mechanism (s) of the pole considered up to to their maximum potential energy.
  • This arrangement is particularly advantageous for a multipole circuit breaker having a control mechanism common to all the poles. Indeed, it is then even easier to size the opening spring independently of the number of poles, while limiting its power.
  • the circuit breaker further comprises hooking means.
  • This arrangement promotes the transition from the intermediate position of tilting to the open position. It therefore makes it possible to limit the kinetic energy required for the passage of the intermediate tilting position. This therefore makes it possible to limit the power of the auxiliary mechanism and also limits the energy to be dissipated in the opening limit stops.
  • the energy accumulator or accumulators of the auxiliary mechanism each comprise a spring disposed between the housing and the support.
  • the auxiliary accumulators indirectly on the support, for example on an intermediate part of the transmission kinematic chain linking the energy accumulator of the opening mechanism to the support.
  • the preferred embodiment offers the advantage of limiting the constraints on this kinematic chain.
  • the housing comprises polar compartments each containing one of said poles, the spring each energy accumulator of the auxiliary mechanism of each pole being disposed in the corresponding polar compartment.
  • the spring is a compression spring disposed inside a cylinder closed by a piston head adapted to come into contact with the support and to transmit to it the force of the compression spring.
  • springs for example torsion springs or bending.
  • a high-voltage low-voltage multipolar circuit-breaker 10 comprises a housing 12 divided into an anterior compartment 14 and a rear compartment 16 by an intermediate wall 18.
  • a window 20 made in the intermediate wall allows the communication between the anterior and posterior compartments.
  • the front compartment 14 serves as a housing for a control device 22, which comprises an energy storage closure mechanism 24 and an opening mechanism 26.
  • a control device 22 which comprises an energy storage closure mechanism 24 and an opening mechanism 26.
  • This device is known per se and reference is made to the document for details. FR-A-2 589 626.
  • the opening mechanism 26 comprises a toggle device which comprises two rods 28, 30 hinged to each other by a pivot axis 32, the connecting rod lower 30 transmission member being coupled to a crank 34 of a switching bar 36.
  • An opening spring 38 is anchored between the crank 34 and a fixed retaining cleat 40.
  • the posterior compartment 16 serves as a housing for the switching bar 36 and for a plurality of poles 42 arranged side by side along a pivot axis 44 of the switching bar 36, in elementary compartments separated by substantially parallel bulkheads. 1 to 5.
  • Each pole 42 comprises a fixed contact member 46 connected to a connection pad 48, a movable contact member 50 connected to a connection pad 52 and an arc extinguishing chamber 54 provided with
  • the movable contact member 50 comprises a movable support 58 pivotally mounted about a geometric axis 60 fixed relative to the housing, and a contact finger 62 pivoting about a geometric axis 64 fixed with respect to the housing, and eccentric with respect to the axis 60.
  • a connecting rod 66 ensures the coupling of the support 58 to the switching bar 36.
  • One end of the finger 62 supports a contact pad 68 destined to ensure contact with a contact pad 70 supported by the fixed contact member 46.
  • the other end of the finger 62 constitutes a cam 72 with two ramps 74, 76 on either side of a top dead center 78.
  • elastic energy store comprising a spring 82 guided in a cage 84 and pushing out thereof a rod 86 supporting a rotary roller 88.
  • the roller 88 is thus permanently in contact with the cam 72.
  • the elastic energy accumulator forms with the cam 72 a bistable mechanism 80.
  • an auxiliary elastic energy accumulator 90 visible in its expanded state in FIG. 5, and comprising a compression spring 92 tending to push towards the support 58 a head 94 guided in translation in a cylinder 96 fixed with respect to the housing 12.
  • the front part of the head 94 comprises a bead 98 intended to cooperate radially with the cylinder to provide guidance, and axially with a flange 100 partially closing the cylinder and forming a limit stop .
  • An attachment device 102 seen in detail in FIG. 6, comprises an arm 104 pivoting about a fixed axis 106 and elastically urged, in the clockwise direction in the figure, by a torsion spring 108.
  • a movable stop 110 is located at the end of the arm 104 and cooperates with a stepped surface 112 of the finger 62.
  • the arm also has a lug 114, adapted to cooperate with a cam 116 located on the support 58.
  • the intermediate wall 18 supports an end stop 118 of elastomeric material.
  • the operation of the device is as follows.
  • the contact pads 68, 70 are in contact with one another and close the electrical circuit between the connection pads 48, 52.
  • the spring 82 of the bistable mechanism 80 is compressed and the roller 88 cooperates with the ramp 74 so as to ensure a contact pressure between the pellet 68, 70.
  • the electromagnetic forces tend to rotate the finger 62 about its axis in a clockwise direction in the figures, and the bistable mechanism 80 tends to oppose this pivoting.
  • the intensity of the current exceeds a limitation threshold corresponding to the setting of the spring 82, the finger 62 pivots and passes the dead point 78 of the bistable mechanism 80, shown in Figure 2.
  • the roller 88 cooperates with the ramp 76 and contributes to push the finger 62 towards the limit stop 118, to the position of Figure 3.
  • the stop 118 acts as a damper and allows, absorbing the surplus energy kinetic, to avoid a rebound of the finger 62.
  • the stop 110 of the attachment device 102 pivots under the bias of its return spring 108 and remains in contact with the stepped surface 112 of the finger 62, so that the mechanism of Hook 102 prohibits the return of the finger 62 in the low position.
  • An opening latch actuated by an operator or a release, releases the linkage 28, 30, 32.
  • the opening spring 38 assisted by the springs 92 of the auxiliary accumulator 90 of each pole, drives the switching bar 36 rotating in the counterclockwise direction and, by means of the connecting rod 66, pivoting the support 58 about its axis 60 in the clockwise direction from the position of FIG. 3 to the position of FIG. 4 then continues alone to solicit the bar 36 until the position of FIG. 5 is reached.
  • the roller 88 cooperates with the ramp 76 and applies on the finger 62 a force whose moment tends to rotate the finger 62 in the clockwise direction about the axis 64
  • the damper 118 then acts as an end stop, so that the finger 62 remains stationary; It is therefore the roller 88 which disappears by compressing the spring 82.
  • the auxiliary energy accumulator 80 of each pole pushes the support 58 corresponding.
  • the head 94 of the auxiliary accumulator 80 reaches its end position when the support 58 reaches the intermediate tilting position of Figure 4, so that the contact between the head of the auxiliary accumulator and the support ceases.
  • the roller 88 urges the ramp 74.
  • the movement of the finger 62 in the counterclockwise direction is, however, counteracted by the stop 110 of the catch 102, so that the finger 62 remains relatively immobile, at the close-up game.
  • the action of the opening spring 38 and that of the spring 82 of the bistable mechanism conjugate and drive the support 58 clockwise to its upper position of Figure 5.
  • the cam 116 of the support 58 pushes the lug 114 of the arm 104, so that the latter pivots in the opposite direction of the clockwise and releases the stop 110.
  • this release does not cause significant pivoting of the finger 62 in the opposite direction of the clockwise, because the movement of the support 58 is then substantially completed.
  • the closure can be triggered by action on a closing latch which releases a closing spring, pivoting the switching bar from its position in FIG. 6 to its closed position of FIG. 1
  • the bar 36 drives the support 58 in the counterclockwise direction and the finger 62, only urged by the roller 88 following the movement of the support 58, is also driven.
  • the support 58 compresses and reloads the spring 92 of the auxiliary accumulator 90 at the end of the closing stroke. This incidentally makes it possible to limit the impact at the end of the closing stroke.
  • each pole comprises a single contact finger 62, a single bistable mechanism 80 and a single auxiliary accumulator 90.
  • a plurality of fingers per pole for example three or five identical fingers pivoting about a common axis 64.
  • Each finger must then be biased by a bistable mechanism, which may be common to several fingers or independent for each finger, so that each finger is biased by a different spring.
  • Support 58 remains unique for each pole.
  • an auxiliary accumulator 90 comprising a plurality of springs arranged in parallel. In practice, three springs arranged in parallel and each acting on a different head, allow to obtain interesting dimensional characteristics.
  • the attachment mechanism 102 performs two functions: it serves on the one hand anti-rebound, in the sense that it avoids, in the event of a very high intensity short circuit generating significant electrodynamic forces that the finger, arrived in the position of Figure 3 and violently striking the damper 118, bounces and returns to close the contact; moreover, it prevents the pivoting of the finger 62 during opening, when the support 58 has just exceeded the intermediate position of tilting.
  • the anti-rebound function is then assumed exclusively by the bistable mechanism 80, assisted if necessary by the end-of-stroke damper 118. As for the movement beyond the intermediate tilting position, it can be limited in its magnitude. until it becomes imperceptible, if the speed of the support 58 at the passage of the tilting position is sufficient.
  • the stop 118 provides two functions: it serves on the one hand anti-rebound since it absorbs some of the kinetic energy at the end of travel of the finger 62 to its repulsed position ; it also makes it possible to immobilize the finger 62 when the support 58 pivots from its closed position to its intermediate tilting position. According to an alternative embodiment, these two functions can be provided by different organs.
  • a finger repulsion end stop may for example be arranged on the support 58, and an independent stop disposed on the housing.
  • This arrangement makes it possible to lift together the support 58 and the finger 62 repelled in a first portion of the stroke of the support 58 towards its open position, before the finger 62 encounters the abutment of the housing and does not come to rest with respect to this this.
  • the invention has been described with reference to a limiting circuit breaker whose fingers pivot about a geometric axis 64 fixed relative to the housing. However, it is also applicable to a limiting circuit breaker as described for example in document GB-A-1 564 412, whose fingers pivot about a fixed axis relative to the pivoting support itself around a fixed axis relative to the housing, and offset from the previous.
  • the switching bar 36 and the support 58 may constitute a single piece, in which case the rod 66 disappears and the linkage 28, 30, 32 of the control mechanism is directly articulated by one of its ends on the support.
  • This configuration corresponds to the mechanism of GB-A-1,564,412.
  • the invention is applicable regardless of the type of opening and closing mechanism of the circuit breaker.

Claims (7)

  1. Strombegrenzender Niederspannungs-Leistungsschalter (10), der
    • ein Gehäuse (12),
    • einen Ausschaltmechanismus (26) mit mindestens einem Energiespeicher (38),
    • einen oder mehrere Pole (42) mit jeweils
    • einem in Bezug zum Gehäuse feststehenden Kontaktstück (46),
    • einem in Bezug zum Gehäuse ortsfesten Anschlag (118),
    • und einem bewegbaren Kontaktstück (50) umfasst, das
    • einen relativ zum Gehäuse zwischen einer Einschaltstellung und einer Ausschaltstellung bewegbaren Träger (58),
    • mindestens einen relativ zum Träger zwischen einer Nichtrückstoßstellung und einer Rückstoßstellung bewegbaren Kontaktfinger (62),
    • sowie mindestens einen bistabilen Mechanismus (80) mit einer Feder (82) umfasst, die so zwischen dem Träger und dem Kontaktfinger angeordnet ist, dass sie einen Zustand maximaler potentieller Energie passiert, wenn der Kontaktfinger und der Träger in einer relativen Totpunktlage zueinander stehen, dass sie den Kontaktfinger in Richtung seiner Rückstoßstellung beaufschlagt, wenn der Kontaktfinger in Bezug zum Träger zwischen seiner Rückstoßstellung und der Totpunktlage steht, und dass sie den Kontaktfinger in Richtung seiner Nichtrückstoßstellung beaufschlagt, wenn der Kontaktfinger in Bezug zum Träger zwischen seiner Nichtrückstoßstellung und der Totpunktlage steht,
    wobei der Anschlag (118) so angeordnet ist, dass der Kontaktfinger (62), wenn er in seiner Nichtrückstoßstellung steht und der Träger von seiner Einschaltstellung in seine Ausschaltstellung übergeht, nach Berührung des Anschlags (118) in dieser Berührungsstellung am Anschlag verharrt, bis der Träger eine in Bezug zum Gehäuse definierte Kippzwischenstellung überwindet, die der relativen Totpunktlage in Bezug zum Kontaktfinger entspricht,
    wobei der Ausschaltmechanismus (26) kinematisch so mit dem Träger (58) verbunden ist, dass er den Träger in Richtung seiner Ausschaltstellung beaufschlagt, wenn sich der Träger in seiner Einschaltstellung befindet,
    dadurch gekennzeichnet, dass jeder Pol (42) darüber hinaus einen Hilfsmechanismus mit einem oder mehreren Energiespeichern (90) umfasst, die den Träger (58) über dessen gesamten Hub oder einen Teil seines Hubs zwischen seiner Einschaltstellung und der Kippzwischenstellung, jedoch nach dem Passieren der Kippzwischenstellung nicht mehr, in Richtung seiner Ausschaltstellung beaufschlagen.
  2. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, dass der bzw. die Energiespeicher (90) des Hilfsmechanismus' nicht auf den Träger (58) wirken, wenn dieser zwischen seiner Kippzwischenstellung und seiner Ausschaltstellung steht.
  3. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, dass der bzw. die Energiespeicher (90) des Hilfsmechanismus' jedes Pols (42) vorzugsweise so ausgelegt sind, dass sie bei der Verschiebung des Trägers (58) des betreffenden Pols eine Energie freisetzen, die größer oder gleich der Energie ist, welche benötigt wird, um den bistabilen Mechanismus bzw. die bistabilen Mechanismen (80) des betreffenden Pols in ihren Zustand maximaler potentieller Energie zu überführen.
  4. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, dass er außerdem Verklinkungsmittel (102) umfasst.
  5. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, dass der bzw. die Energiespeicher (90) des Hilfsmechanismus' jeweils eine zwischen dem Gehäuse (12) und dem Träger (58) angeordnete Feder (92) umfassen.
  6. Leistungsschalter nach Anspruch 5, dadurch gekennzeichnet, dass das Gehäuse (12) Polkammern mit jeweils einem darin enthaltenen Pol (42) umfasst, wobei die Feder (92) jedes Energiespeichers (90) des Hilfsmechanismus' jedes Pols in der entsprechenden Polkammer angeordnet ist.
  7. Leistungsschalter nach Anspruch 6, dadurch gekennzeichnet, dass die Feder (92) jedes Hilfsmechanismus-Energiespeichers (90) als Druckfeder ausgebildet ist, die im Inneren eines durch eine Kolbenkappe (94) verschlossenen Zylinders (96) gelagert ist,
    wobei die Kappe dazu ausgelegt ist, in Kontakt mit dem Träger (58) zu gelangen und die Kraft der Druckfeder auf diesen zu übertragen.
EP00410027A 1999-04-22 2000-03-22 Begrenzende Schutzschalter mit Zusatzenergiespeicher Expired - Lifetime EP1047090B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9905276A FR2792768B1 (fr) 1999-04-22 1999-04-22 Disjoncteur limiteur comportant un accumulateur d'energie auxiliaire
FR9905276 1999-04-22

Publications (2)

Publication Number Publication Date
EP1047090A1 EP1047090A1 (de) 2000-10-25
EP1047090B1 true EP1047090B1 (de) 2006-06-07

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EP00410027A Expired - Lifetime EP1047090B1 (de) 1999-04-22 2000-03-22 Begrenzende Schutzschalter mit Zusatzenergiespeicher

Country Status (6)

Country Link
US (1) US6337449B1 (de)
EP (1) EP1047090B1 (de)
JP (1) JP4387034B2 (de)
CN (1) CN1190816C (de)
DE (1) DE60028448T2 (de)
FR (1) FR2792768B1 (de)

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US20040257184A1 (en) * 2003-06-18 2004-12-23 Meiners Steven E. Six-pole to three-pole bussing for a network protector
US7098416B2 (en) * 2005-01-25 2006-08-29 Eaton Corporation Reverse-action auxiliary switch actuator mechanism and circuit breaker employing the same
US8093965B2 (en) * 2008-12-03 2012-01-10 Schneider Electric USA, Inc. Add-on trip module for multi-pole circuit breaker
US8093964B2 (en) * 2008-12-29 2012-01-10 Schneider Electric USA, Inc. Add-on trip module for multi-pole circuit breaker
US8035467B2 (en) * 2008-12-03 2011-10-11 Mittelstadt Chad R Add-on trip module for multi-pole circuit breaker
EP2317529B1 (de) * 2009-11-03 2017-04-19 ABB Schweiz AG Federbetriebene Betätigung einer elektrischen Schaltvorrichtung
EP2317528B1 (de) * 2009-11-03 2014-02-26 ABB Technology AG Federbetätigter Aktuator für eine elektrische Schaltvorrichtung
GB2498806A (en) * 2012-01-30 2013-07-31 P S Electrical Services 1998 Ltd Air circuit breaker coil adapter
US9831645B2 (en) 2013-09-25 2017-11-28 Schneider Electric USA, Inc. Spring loaded, bistable connect/disconnect for MCC unit
US9805881B2 (en) * 2013-09-27 2017-10-31 Schneider Electric USA, Inc. Motor control center unit disconnect with interlocks
CA2922271C (en) 2013-09-30 2020-11-03 Schneider Electric USA, Inc. Mcc unit troubleshooting compartment
US9865997B2 (en) 2013-11-12 2018-01-09 Schneider Electric USA, Inc. Double shutter shroud and tunnel for MCC bus connections
US10123436B2 (en) 2014-03-31 2018-11-06 Schneider Electric USA, Inc. Live load indicator with door interlock
WO2015152864A1 (en) 2014-03-31 2015-10-08 Schneider Electric USA, Inc. Panelboard breaker compartment with disconnect features
US9748024B2 (en) 2014-06-20 2017-08-29 Schneider Electric USA, Inc. Passive arc control with sequestered phases in a vertical bus system of a motor control center
KR101904877B1 (ko) 2017-04-10 2018-10-08 엘에스산전 주식회사 차단기의 가동자 어셈블리
US10439371B1 (en) 2018-06-22 2019-10-08 Schneider Electric USA, Inc. Snapped in rotating arc housing assembly for safety switch

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Also Published As

Publication number Publication date
JP2000315450A (ja) 2000-11-14
CN1271957A (zh) 2000-11-01
US6337449B1 (en) 2002-01-08
JP4387034B2 (ja) 2009-12-16
EP1047090A1 (de) 2000-10-25
FR2792768B1 (fr) 2001-06-15
DE60028448T2 (de) 2006-12-14
FR2792768A1 (fr) 2000-10-27
CN1190816C (zh) 2005-02-23
DE60028448D1 (de) 2006-07-20

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