EP0042778B1 - Disjoncteur miniature unipolaire et neutre - Google Patents

Disjoncteur miniature unipolaire et neutre Download PDF

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Publication number
EP0042778B1
EP0042778B1 EP19810400914 EP81400914A EP0042778B1 EP 0042778 B1 EP0042778 B1 EP 0042778B1 EP 19810400914 EP19810400914 EP 19810400914 EP 81400914 A EP81400914 A EP 81400914A EP 0042778 B1 EP0042778 B1 EP 0042778B1
Authority
EP
European Patent Office
Prior art keywords
contacts
neutral
circuit
phase
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
Application number
EP19810400914
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0042778A1 (fr
Inventor
Bernard Bouvet
Jean Izoard
Michel Lazareth
François Reynaud
Gérard Terrier
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin 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
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0042778A1 publication Critical patent/EP0042778A1/fr
Application granted granted Critical
Publication of EP0042778B1 publication Critical patent/EP0042778B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • 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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H71/7436—Adjusting the position (or prestrain) of the bimetal

Definitions

  • a known circuit breaker of the kind mentioned (FR-A No 2167302) is used in terminal distribution installations, in particular in buildings, to protect an electrical circuit and, in the open position, isolate this circuit entirely by cutting both the phase conductor and neutral conductor.
  • This known circuit breaker has two pairs of contacts, insulated from each other for use as a bipolar switch or as a circuit breaker with a protected pole with neutral cut.
  • the pairs of contacts and the associated breaking chambers are absolutely symmetrical, and the contacts open and close simultaneously.
  • the neutral contact may very well open first and be subjected alone to the action of the arc.
  • the contacts are not moved to the open position by an extractor during a short circuit, which increases the risk of opening the neutral contact beforehand.
  • the circuit breaker is produced by the association of two poles, one of which, the phase pole, is protected, and the other, the neutral pole, is cut.
  • the movable contact of the neutral pole ' is mechanically connected to the movable contact of the phase pole by a fork having an elastic tooth to close the neutral contact first and open the phase contact first.
  • the number of modules is doubled and the asymmetrical arrangement of the mechanism and the triggers results in a loss of space and unreliable operation.
  • the object of the present invention is to remedy the aforementioned drawbacks;
  • the circuit breaker according to the invention is characterized in that the contact zones of the phase contacts and of the neutral contacts are offset to achieve manual opening by the lever of the phase contacts before that of the neutral contacts, and a closing of the contacts neutral before that of the phase contacts, and in that the electromagnetic device actuates an extractor acting on the two contact arms to quickly and simultaneously move these contact arms to the open position during a tripping on short circuit.
  • control mechanism and the trigger of the protected pole occupy the entire width of the box, only the lower part being subdivided into two chambers to receive the neutral and phase contacts whose contact zones are offset to open the phase contacts first and close the neutral contacts first.
  • the contacts open almost simultaneously on a short circuit under the action of the extractor, and this avoids any delay in opening detrimental to a quick cut.
  • the partition wall of the lower part of the housing is offset laterally, so that the volume of the chamber associated with the phase contacts is greater than that of the chamber of the neutral contacts.
  • Document FR-A No 2280185 describes a similar configuration of two adjoining chambers, a pair of contacts being housed in each chamber and the movable contacts of the two chambers being secured by a fork support.
  • the two pairs of contacts are electrically connected in series and open and close at the same time.
  • the adjustment of the thermal trip device of the circuit breaker is advantageously carried out by an adjustment screw accessible from the outside of the circuit breaker housing, this screw being screwed into a threaded orifice formed in the plastic wall of the housing.
  • the thread in the plastics material avoids a nut and, according to an important improvement of the invention, the threaded orifice opens onto the fixing face of the housing, preferably in the area receiving a removable fixing lock. In the assembled position of the lock, the adjustment screw is hidden, which prevents any modification of the adjustment carried out in the factory.
  • Each pair of contacts is associated with a breaking chamber with two electrodes, or arc guide horns, facing each other.
  • a neck a zone of minimum spacing of the electrodes, is provided at a location spaced from the contacts, in order to avoid any re-priming on the contacts.
  • the switching of the phase arc on the horn is advantageously delayed compared to that of the arc anchored on the neutral contacts, so as not to not prematurely switch off the magnetic trip unit and the associated extractor.
  • the two neutral and phase contact arms are mounted on either side of a plate-shaped support, in a material molded from a zinc-based alloy added with aluminum, copper and magnesium, commercially. called Zamak, carrying axes and stops coming from molding. Manufacturing and assembly are thus considerably simplified.
  • a housing 10 made of a molded insulating material, comprises two half-shells 12, 14 assembled by rivets 16.
  • the housing 10 has a generally parallelepiped shape of small width, corresponding to a system commercially known as Multi 9.
  • the housing 10 has a rear face, or bottom, 18 for attachment to a symmetrical DIN rail, and a front face 20 having a passage for a control handle 22.
  • On one of the narrow side faces 24 is arranged a pair of terminals 26, 28 for supplying the device housed in the housing 10, the opposite output face 30 carrying a pair of terminals 32, 34 arranged side by side.
  • the width of the housing 10 corresponds to that of a single-pole circuit breaker of the aforementioned modular system and corresponds to two steps of 9 mm, that is to say a width of 18 mm.
  • the opposite terminals 26, 32 belong to a neutral cut-off circuit housed inside the housing 10, the terminals 28, 34 belonging to a phase cut-off circuit also housed inside the housing 10.
  • An insulating intermediate partition 36 interposed between the half-shells 12, 14, extends substantially parallel to the large lateral faces of the housing 10 and separates the neutral cut-off circuits and the phase cut-off circuits (see fig. 6).
  • the intermediate partition 36 has marginal parts 38, 40, which extend in the median plane of the housing 10 parallel to the large lateral faces, being interposed respectively between the neutral and phase terminals 26, 28 and 32, 34.
  • the central part 42 of the intermediate partition 36 is offset laterally relative to the median plane of the housing 10 upwards in FIG.
  • the intermediate partition 36 extends over part of the height of the housing 10 and separates the elements specific to the neutral circuit and from the phase circuit, the common elements, in particular the control mechanism and the tripping described below, being housed in a common part above the partition 36.
  • the supply terminal 26 carries a fixed contact 48, capable of cooperating with a movable neutral contact 50 carried by an insulating contact arm 52, pivotally mounted on an axis 54.
  • the fixed contact 48 is extended by an arcing horn 49 extending inside the chamber 46 opposite an electrode 51 placed at the rear of the movable contact 50.
  • the electrode 51 is connected, on the one hand, to terminal 32 and, on the other hand, by a braid 56 to the movable contact 50.
  • the neutral circuit constituted by the terminal 26, the fixed contact 48, the movable contact 50, the braid 56, the terminal 32, the arc horn 49 and the electrode 51, is disposed in the space delimited between the intermediate partition 36 and the half-shell 12, in particular in the chamber 46.
  • the arc horn 49 and the electrode 51 diverge from a point, or neck, 53 of minimum spacing, disposed just behind the movable contact 50 open.
  • Fig. 2 illustrates more particularly the phase circuit comprising the supply terminal 28, a fixed contact 58 connected, on the one hand, to terminal 28 and extending, on the other hand, by an arcing horn 60, a contact mobile 62, carried by a contact arm 64, of an insulating material, pivotally mounted on the axis 54.
  • the mobile phase contact 62 is connected by a braid 66 to the input of a coil 68 of a trip device magnetic designated by the general reference 70, at the output of the coil 68 being connected by a braid 72 to a bimetallic strip 74 connected to the output terminal 34.
  • an electrode 76 electrically connected to terminal 34.
  • the part of the phase circuit constituted by terminal 28, fixed contact 58, horn 60, electrode 76 and terminal 34, is arranged in the space delimited by the intermediate partition 36 and the half-shell 14, in particular in the chamber 44 forming the arc breaking chamber.
  • the horn 60 and the electrode 76 constitute a convergent-divergent whose neck 77 is offset towards the rear of the chamber 44, relative to the open position of the movable contact 62, to delay the switching of the arc on the electrode 76 and switching off the coil 68.
  • the convergent facilitates the migration of the arc at the start, and the neck 77 limits the risks of re-striking on the contacts 58, 62.
  • the permanent current flows through the coil 68 and the bimetallic strip 74 detecting, respectively, a current of short circuit and an overload current to cause separation of the contacts 58, 62.
  • the control mechanism housed in the upper part, in figs. 2 and 3, of the housing 10 above the intermediate partition 36 is common to the movable phase contact 62 and to the movable neutral contact 50.
  • the axis 54 of articulation of the contact arms 52, 64 is carried by a support in the form of a plate 78, pivotally mounted on a fixed axis 80, integral with the half-shells 12, 14, of the housing 10.
  • Lights 82, formed in the contact arms 52, 64 in line with the passage of the axis 80 allow limited movement of the contact arms 52, 64 on the support 78, a spiral spring 84 urging the contact arms 52, 64 in the closed position of the contacts 48, 50; 58, 62.
  • a spring 86 biases the support 78 in rotation on the axis 80 in the direction of opening of the contacts 48, 50; 58, 62, in the direction of rotation of the needles of a watch in FIG. 2.
  • the support 78 carries a stop 88 capable of cooperating with the ends 90, 91 of the contact arms 52, 64 to cause the movable contacts 50, 62 to rotate towards the open position.
  • the support 78 cooperates with a device d drive and locking comprising an axis 92 capable of being wrestled in a light 94 in the form of a square formed in the support 78.
  • the axis 92 is formed by the curved end of a rod 96 whose opposite end is engaged in an orifice 98 of the handle 22, eccentric with respect to the axis of rotation 100.
  • a latch 102 mounted for rotation on a fixed axis 103, has a stop surface 104 limiting the movement of the axis 92 in the light 94 in the locking position shown in the figures.
  • the latch 102 cooperates with a latching 106, carried by a latching lever 108 pivotally mounted on a fixed axis 110.
  • the latching lever 108 can be moved to a release position of the latch 102 by pivoting during a deflection bimetal 74, or during the attraction by the coil 68 of the core 112 of the magnetic trigger 70.
  • a spiral spring 114 urges the hooking lever 108 and the latch 102 in the locking position shown in the figures.
  • the lever 22 is biased in the open position of the contacts by a spring 116.
  • the support 78 is a molded part, for example made of an alloy commercially known as Zamak, and the pins 54, 80 and stops 88, coming from molding, protrude on either side of the plate, which facilitates mounting.
  • the circuit breaker mechanism operates as follows.
  • the support 78 In the closed position of contacts 48, 50; 58, 62, the support 78 is held in the closed position against the force of the spring 86 by the pin 92 immobilized, on the one hand, by the latch 102 preventing escape to the base part of the light 94 and, on the other hand, by passing the dead center of the toggle formed by the rod 96 and the handle 22.
  • the manual opening of the contacts is controlled by a pivoting in the trigonometric direction of the handle 22, causing a breaking of the toggle joint 96, 22 and an upward displacement (in FIG. 2) of the axis 92, this displacement authorizing a pivoting of the support 78 in a clockwise direction.
  • the coil 68 is housed in the common space and occupies the entire width of the housing 10 (see fig. 7).
  • the core 112 of the coil 68 carries an extractor 118 cooperating with the contact arms 52, 64 to move the contacts 50, 62 to the open position when a short circuit is detected.
  • the neutral contact arm 52 is extended downward (in FIG. 3), so as to offset the movable phase 62 and neutral 50 contacts in height (see FIG. 8). This height offset causes a different spacing between the stop 88 of the support 78 and the ends 90, 91 of the contact arms 52, 64, the stop 88 coming, during a pivoting in the clockwise direction of the support 78, first strike the phase contact arm 64 to move the latter into the open position.
  • the neutral contact arm 52 is moved with delay when the stop 88 is impacted on the end 90 of the contact arm 52.
  • the extension according to the invention of the neutral contact arm 52 allows the use of the same stop 88 for controlling the opening and a common axis 54 of articulation of the contact arms 52, 64.
  • the pivoting of the support 78 causes the opening of the phase contacts 58, 62 before that of the neutral contacts 48.50 and, conversely, the closing of the neutral contacts 48, 50 before that of the phase contacts 58, 62.
  • the extractor 118 acts simultaneously on the two movable contacts 50, 62 by immediately creating a double break.
  • the movable contacts 50, 62 are fixed to the external faces, respectively, of the contact arms 52 and 64, in order to maximize the insulation spacing of these contacts.
  • the judicious arrangement according to the invention has made it possible to house the neutral cut-off device and the phase cut-off device in a housing of standard profile and width, corresponding to those of a single-pole circuit breaker. Substitution in an existing installation of a single-pole circuit breaker is therefore facilitated.
  • the adjustment point of the bimetallic strip 74 is transferred to the face 18 for fixing the housing 10.
  • the adjustment of the bimetallic strip 74 is carried out, in a manner well known per se, by a deformation of its support 120 by screwing or unscrewing an adjustment screw 122 engaged in a threaded orifice formed in the plastic wall of the housing 10 and opening onto the fixing face 18.
  • This arrangement has the double advantage of freeing the narrow side face 30 for the arrangement connection terminals 32, 34, and the transfer of the adjustment point to a face which is not accessible in the fixed position of the housing 10.
  • the tapped orifice advantageously opens into a housing 126 for receiving a fixing lock, not shown, capable of to be put in place after assembly of the half-shells 12, 14 and adjustment of the device.
  • the lock engaged in the housing 126 closes the adjustment point and prevents any subsequent adjustment. This arrangement saves the sealing plug and the fixing nut of the adjusting screw 122.
  • the neutral supply terminal 26 is shifted downward relative to the adjacent phase terminal 28.
  • This height offset allows connection to combs, or bars, rectilinear, respectively of phase and neutral (not shown) connecting a plurality of modules joined by their lateral face and fixed on the same support rail.
  • the height difference of the terminals 26, 28 corresponds to that of the movable contacts 50, 62, which facilitates the judicious arrangement of the conductors.
  • the output terminals 32, 34, intended to receive output cables, are preferably arranged at the same level, but it would not be departing from the scope of the invention to also shift these output terminals.

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  • Breakers (AREA)
EP19810400914 1980-06-19 1981-06-10 Disjoncteur miniature unipolaire et neutre Expired EP0042778B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8013681A FR2485254A1 (fr) 1980-06-19 1980-06-19 Disjoncteur miniature unipolaire et neutre
FR8013681 1980-06-19

Publications (2)

Publication Number Publication Date
EP0042778A1 EP0042778A1 (fr) 1981-12-30
EP0042778B1 true EP0042778B1 (fr) 1984-05-30

Family

ID=9243297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810400914 Expired EP0042778B1 (fr) 1980-06-19 1981-06-10 Disjoncteur miniature unipolaire et neutre

Country Status (8)

Country Link
EP (1) EP0042778B1 (enrdf_load_stackoverflow)
JP (1) JPS5730234A (enrdf_load_stackoverflow)
DE (1) DE3163856D1 (enrdf_load_stackoverflow)
ES (1) ES8203528A1 (enrdf_load_stackoverflow)
FR (1) FR2485254A1 (enrdf_load_stackoverflow)
MA (1) MA19181A1 (enrdf_load_stackoverflow)
PT (1) PT73209B (enrdf_load_stackoverflow)
YU (1) YU44065B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107427126A (zh) * 2015-04-02 2017-12-01 保罗海蒂诗有限及两合公司 抽屉侧壁

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133589A (ja) * 1983-01-20 1984-07-31 三洋電機株式会社 マトリツクスパネル表示装置に於ける拡大表示方法
JPS61114682A (ja) * 1984-11-09 1986-06-02 Matsushita Electric Ind Co Ltd 画像処理回路
FR2574218B1 (fr) * 1984-12-03 1987-03-20 Merlin Gerin Effecteur pour une installation modulaire de distribution domestique et de gestion d'energie electrique
FR2578093B1 (fr) * 1985-02-27 1987-03-06 Merlin Gerin Disjoncteur differentiel unipolaire et neutre
FR2582857B1 (fr) * 1985-05-29 1989-04-28 Merlin Gerin Disjoncteur unipolaire et neutre a effet shunt
JPS61201256U (enrdf_load_stackoverflow) * 1985-06-06 1986-12-17
FR2600210B1 (fr) * 1986-06-17 1993-04-16 Telemecanique Electrique Disjoncteur a deux circuits de commutation dont l'un est protege
IT207988Z2 (it) * 1986-08-04 1988-03-14 Bassani Spa Interruttore bipolare di apparecchiature elettriche di serie civili, con dispositivo di commutazione dell'arco elettrico.
EP0303698A4 (fr) * 1987-02-24 1990-03-27 Vnii Pk I Avtomatizi Interrupteur limiteur de courant.
FR2648614B1 (fr) * 1989-06-16 1994-03-11 Hager Electro Sa Disjoncteur phase et neutre
JP2724027B2 (ja) * 1990-05-28 1998-03-09 松下電工株式会社 回路遮断器
FR2674369B1 (fr) * 1991-03-20 1996-09-20 Merlin Gerin Disjoncteur electrique de phase et neutre a encombrement reduit.
FR2689308B1 (fr) * 1992-03-31 1994-05-20 Merlin Gerin Mecanisme de commande a palonnier pour disjoncteur electrique a phase et neutre.
AT402583B (de) * 1992-11-25 1997-06-25 Felten & Guilleaume Ag Oester Leitungsschutzschalter mit einem thermisch und magnetisch geschützten aussenleiterpol und einem ungeschützten nulleiterpol
DE4307811A1 (de) * 1993-03-12 1994-09-15 Abb Patent Gmbh Elektrisches Schaltgerät
JP3405264B2 (ja) * 1999-04-12 2003-05-12 松下電工株式会社 回路遮断器
EP1473750A1 (de) * 2003-04-30 2004-11-03 Siemens Aktiengesellschaft elektromechanisches Schaltgerät
ITMI20050042A1 (it) * 2005-01-17 2006-07-18 Vimar Spa Interruttore magneto-termico-differenziale
FR2956922B1 (fr) 2010-03-01 2012-08-24 Schneider Electric Ind Sas Dispositif de coupure
CN101916695B (zh) * 2010-08-06 2012-08-29 上海良信电器股份有限公司 小型断路器双层电弧隔离装置
CN103383907B (zh) * 2013-05-10 2015-07-08 长城电器集团有限公司 一种塑壳漏电断路器的隔离模块
FR3154538A1 (fr) 2023-10-20 2025-04-25 Schneider Electric Industries Sas Dispositif de coupure avec moyen de detrompage

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1276936A (fr) * 1959-12-28 1961-11-24 Busch Jaeger Duerener Metall Interrupteur-disjoncteur d'installation à socle
GB933273A (en) * 1959-12-30 1963-08-08 Walsall Conduits Ltd Improvements relating to electric circuit breakers
DE1286186B (de) * 1963-10-28 1969-01-02 Licentia Gmbh Installationsselbstschalter
DE1286188B (de) * 1965-09-09 1969-01-02 Licentia Gmbh Installationsselbstschalter mit Hilfskontakt
BE793961A (fr) * 1972-01-12 1973-05-02 Landis & Gyr Sarl Appareil de coupure basse tension pour tableaux de distribution electriques
FR2226745B2 (enrdf_load_stackoverflow) * 1973-04-19 1978-03-03 Legrand Sa
DE2435698C2 (de) * 1974-07-25 1976-09-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Strombegrenzender leitungsschutzschalter mit zwei lichtbogenkammern
US3949336A (en) * 1975-01-08 1976-04-06 Square D Company Sequential resetting circuit interrupter
FR2350680A1 (fr) * 1976-05-04 1977-12-02 Merlin Gerin Disjoncteur electrique basse tension a platine de support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107427126A (zh) * 2015-04-02 2017-12-01 保罗海蒂诗有限及两合公司 抽屉侧壁

Also Published As

Publication number Publication date
PT73209B (fr) 1982-07-06
FR2485254B1 (enrdf_load_stackoverflow) 1982-09-17
YU44065B (en) 1990-02-28
JPS641892B2 (enrdf_load_stackoverflow) 1989-01-13
DE3163856D1 (en) 1984-07-05
ES502931A0 (es) 1982-04-01
JPS5730234A (en) 1982-02-18
ES8203528A1 (es) 1982-04-01
FR2485254A1 (fr) 1981-12-24
YU152781A (en) 1983-06-30
EP0042778A1 (fr) 1981-12-30
PT73209A (fr) 1981-07-01
MA19181A1 (fr) 1981-12-31

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