EP0045672A1 - Kleinschalter mit Abschaltung des Nulleiters und des Phasenleiters - Google Patents

Kleinschalter mit Abschaltung des Nulleiters und des Phasenleiters Download PDF

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Publication number
EP0045672A1
EP0045672A1 EP81401078A EP81401078A EP0045672A1 EP 0045672 A1 EP0045672 A1 EP 0045672A1 EP 81401078 A EP81401078 A EP 81401078A EP 81401078 A EP81401078 A EP 81401078A EP 0045672 A1 EP0045672 A1 EP 0045672A1
Authority
EP
European Patent Office
Prior art keywords
contacts
phase
neutral
circuit breaker
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.)
Granted
Application number
EP81401078A
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English (en)
French (fr)
Other versions
EP0045672B1 (de
Inventor
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9244985&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0045672(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Priority to AT81401078T priority Critical patent/ATE9750T1/de
Publication of EP0045672A1 publication Critical patent/EP0045672A1/de
Application granted granted Critical
Publication of EP0045672B1 publication Critical patent/EP0045672B1/de
Expired 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
    • H01H71/002—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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2066—Fork-shaped bridge; Two transversally connected contact arms bridging two fixed contacts

Definitions

  • the invention relates to a miniature unipolar and neutral circuit breaker with a narrow molded housing having two opposite narrow front and rear faces respectively provided with a control lever and a fixing means and two opposite opposite narrow faces each having a terminal. phase and a neutral terminal symmetrically juxtaposed on either side of the median plane of the housing perpendicular to said narrow faces, said housing containing phase contacts inserted in a phase circuit connecting said phase terminals, neutral contacts inserted in a neutral circuit connecting the neutral terminals, and a mechanism for controlling said contacts capable of being actuated on the one hand by said lever and on the other hand by an overcurrent and / or fault trigger.
  • a circuit breaker of the type mentioned is used in terminal distribution installations, in particular in buildings to protect an electrical circuit, and in the open position completely isolate this circuit by cutting both the phase conductor and the neutral conductor.
  • the circuit breaker can be produced by the association of two poles, which are both protected or one of which, the phase pole, is protected, and the other, the neutral pole, is cut. In both cases the number of modules is doubled and the size and cost of installation are significantly increased.
  • the present invention starts from the observation that the cut-off device for the neutral conductor can be simplified, the circuit protection being ensured by the phase cut-off device.
  • the simplification results in particular from the use of the control mechanism of the phase cut-off device for actuation of the neutral cut-off device, and from the incorporation of the phase and neutral devices in the same housing, the width or the pitch is equivalent to that of a single pole.
  • phase contacts comprise a pair of fixed contacts juxtaposed symmetrically on either side of said median plane, materialized in the breaking zone by an insulating partition, and a movable contact in fork shape overlapping said partition and cooperating with said pair of fixed contacts to bridge the latter in the closed position and that a pair of breaking chambers, arranged symmetrically with said insulating partition, is associated with said phase contacts to extinguish the arcs drawn during of the opening of said phase contacts, said breaking chambers and said phase contacts being arranged on the side of said rear face occupying the entire width of the housing, said neutral contacts being arranged on the side of said front face of the housing.
  • phase cut-off device with two cut-offs in series can thus be housed on the side of the rear face of the housing while occupying the entire width of the latter; leaving the front part of the box available to the neutral cut-off device housing.
  • the phase contacts and the breaking chambers are advantageously aligned, extending over the entire separation length of the input and output terminals of the circuit breaker, arranged on the narrow lateral faces in the usual manner.
  • the arrangement according to the invention makes it possible to comply with the standardized dimensions of a module with a width of 17.5 mm.
  • a median insulating partition is arranged in the zone of the contacts and of the phase cut-off chambers, and it extends to the edges of the housing ensuring separation between the juxtaposed terminals of neutral and phase.
  • the mechanical connection between the movable phase contact and the movable neutral contact is made by means of the circuit breaker control handle located on the front face of the housing.
  • the movable neutral contact is connected to an appendage of the lever by a rod forming a control toggle, coming in the extended position in the closed position of the contact.
  • a second appendage of the lever forms with a breakable link a toggle link between the lever and the movable contact in phase fork. The locking in the closed position of the contacts is effected by exceeding the neutral point of the toggle joint in a manner well known to specialists.
  • the breakable connecting rod comprises a lock capable of being actuated by an electromagnetic trip unit with a coil housed on the side of the front face of the housing next to the control lever.
  • the lock also cooperates with a:, bimetal for detecting overload currents.
  • the bolt keeps the two constituent elements of the breakable connecting rod in abutment and this bolt is arranged to transmit, after unlocking the breakable connecting rod, a force for opening the movable contact in the fork.
  • a housing 10 of molded insulating material consists of two half-shells 12, 14 assembled by rivets.
  • the housing 10 has a generally parallelepiped shape of small width, in particular of 17.5 mm corresponding to a module of a modular system.
  • the housing 10 has a rear face 16 for attachment to a symmetrical DIN rail and a front or front face 18 having a passage for a manual control lever 20.
  • On one of the narrow side faces 22 of the housing 10 is disposed a pair of terminals 24, 26 for supplying the device housed in the housing 10, the opposite face 28 carrying a pair of juxtaposed terminals 30, 32.
  • the opposite terminals 24, 30 belong to a neutral cutoff circuit housed inside the housing 10, the terminals 26, 32 belonging to the phase cutout circuit.
  • An insulating intermediate partition 34 interposed between the half-shells 12, 14 in the median plane of the housing 10 separates the adjacent terminals 24, 26 and 30, 32 and extends inside the housing 10 to subdivide into two symmetrical compartments a part of this case.
  • a neutral cut-off device shown in particular in FIG. 2, and comprising a movable contact 36 pivotally mounted on an axis 38.
  • the movable contact 36 cooperates with a fixed contact 40 integral with the terminal 30.
  • the movable contact 36 is connected by a connecting rod 42 to an appendage 44 of the lever 20, the connecting rod assembly 42, appendage 44 forming a toggle coming in the extended position in the closed position of the neutral contacts 36, 40.
  • the neutral contacts 36, 40 are adjacent to the output terminal 30, the handle 20 being offset laterally on the side of this terminal 30.
  • the con neutral tacts 36, 40 are disposed on the side of the front face 18 in a compartment delimited by the half-shell 12 and the intermediate partition 34.
  • a conductor 46 electrically connects the movable contact 36 to the opposite neutral terminal 24. It is easy to see that in the closed position shown in fig.
  • phase circuit In the housing 10 is housed a phase circuit, which essentially occupies the rear part of the housing over its entire width.
  • the phase circuit comprises two fixed contacts 48, 50, arranged on either side of the central partition 34 while being attached to the rear face 16.
  • the fixed contacts 48, 50 are each extended in the direction of the outlet face 28 by electrodes 52, 54 parallel to the face 16, and constituting end chamber plates 56, 58, arranged on either side of the central partition 34.
  • the interrupting chambers 56, 58 include deionization plates parallel to the rear face 16, but it is clear that an interrupting chamber devoid of plates or comprising electrodes for guiding the arc can be used.
  • the fixed contacts 48, 50 are each extended on the opposite side of the electrodes 52, 54 by conductors 62, 60 parallel to the face 16 and oriented towards the supply face 22.
  • the fixed contacts 48, 50 cooperate respectively with movable contacts 64, 66 belonging to a contact fork 68 rotatably mounted on a fixed axis 70 embedded between the half-shells 12, 14. In the closed position the movable contacts 64, 66 extend substantially parallel to the rear face 16 of the housing 10 in the extension of the sheets of the breaking chambers 56, 58.
  • the movable contacts 64, 66 separate from the fixed contacts 48, 50 by spreading the arcs drawn between the contacts 48, 64; 50, 66 at the entrance to the breaking chambers 56, 58, to promote their penetration and their extinction.
  • the use of a movable fork contact 68 makes it possible to insert two arcs in series into the phase circuit, and it is clear that the interrupting chambers 56, 58 can be of a restricted dimension, in particular of a height lower leaving available a housing area of the neutral cut-off device, -described above.
  • the movable fork contact 68 avoids the use of current supply braids.
  • the middle insulating partition 34 which extends in the area of the contacts 48, 64; 50, 66, is interrupted in the housing area of the control mechanism described below.
  • the movable fork contact 68 carries an axis 72 of articulation of the end of a connecting rod which can be broken into two elements 74, 76, the opposite end of which is articulated to an appendage 78 of the lever 20.
  • the end 80 of the element 76 is engaged and guided in a groove formed in the wall of the housing 10 and it cooperates in the active position with a step 82 formed at the corresponding end of the element 74.
  • a lock 84 is capable of being held by a flange 86 the end 80 in support of the step 82. In the locked position of the elements 74, 76 the latter constitute a rigid connection between the appendix 78 and the fork contact 68. In the closed position of the contacts, represented in FIGS.
  • the toggle formed by the appendix 78 and the breakable connecting rod with elements 74, 76 is in a position beyond dead center maintaining the contacts 48, 64; 50, 66 in the closed position. Pivoting in the direction indicated by the arrow in FIG. 2, of the lever 20 causes the toggle joint to break and the movable contact in the fork 68 to move into the open position.
  • the contact pressure is provided by a cooperating spring 88 with the tail of the fork movable contact 68 to urge the latter in the closed position as well as by a backlash assembly using a light 90 of the fork contact 68 receiving the axis 70.
  • the assembly is arranged in such a way that a pivoting movement of the lever 20 in the closing direction of the contacts causes a closing of the toggle 78, 76, 74 to close contacts 48, 64; 50, 66 and by a movement continued compression of the spring 88 with a corresponding displacement of the light 90 relative to the fixed axis 70.
  • the contact pressure can of course be achieved in any other operating manner, in particular by an elastic connection inserted in the control kinematics.
  • the lock 84 in the form of a yoke is mounted with limited sliding by virtue of a light 92 on the axis 72, so as to allow relative movement of the lock 84 relative to the element 74 towards a position for releasing the latter element. by escaping from the stop or flange 86 (see fig. 6).
  • the end 80 exerts on the step 82 a pivoting force tending to move the element 74 towards a position of rupture of the connection between the elements 74, 76, against a return spring 94.
  • the lock 84 carries a nose 98 cooperating with the end of a rocker arm 100 rotatably mounted on an axis 102.
  • the opposite end of the rocker arm 100 cooperates with a bimetallic strip 104 whose base is fixed to the end of the conductor 62.
  • the free end of the bimetal strip 104 is electrically connected by a conductor 106 to the terminal 26. It is easy to see that a deflection of the bimetallic strip 104 to the right in FIG. 1, causes a pivoting in the direction of the needles d 'A watch of the rocker arm 100 and a lifting of the lock-84 to the unlocked position.
  • the lock 84 also cooperates with an electromagnetic trip device 108, comprising a carcass 110, surrounding a coil 112.
  • the electromagnetic trip device 108 is arranged in the front zone of the box 10 next to the lever 20, the axis of the electromagnetic trip device 108 being substantially perpendicular to the faces 16, 18 of the box 10.
  • the rod 116 of the core 114 passes through an orifice 120, formed in the lock 84, so that the head 118 provides a unidirectional connection with the lock-84, active in the upward direction in the figures towards the front face 18.
  • an excitation of the coil 112 causes a attraction of the plunger core 114 in the direction of the front face 18, and a corresponding displacement of the head 118, which causes in its displacement the latch 84 in the unlocked position as described above.
  • the coil 112 is electrically connected on the one hand by a conductor 122 to the terminal 32, and on the other hand by a conductor 124 to the conductor 60.
  • the latch 84 is shaped as a yoke whose lateral flanges cooperate respectively with the movable contacts 64, 66 of the fork 68.
  • the element 74 of the breakable connecting rod is advantageously arranged in the plane of symmetry inside the yoke of the latch 84, so as to respect the symmetry of the control device.
  • the electromagnetic trip device 108 occupies the space between the latch 84 and the face 18 over the entire width of the housing 10. The clearance limited clearance by the light 92 of the latch 84 on the axis 72 carried by the fork contact 68, makes it possible to transmit a force d opening after the unlocking phase in a manner well known to specialists.
  • the manual opening of the circuit breaker is carried out by pivoting the handle 20 in the counterclockwise direction indicated by the arrow, which causes on the one hand the breaking of the toggle switch 42, 44, and the opening of the neutral contacts 36, 40, and on the other hand the breaking of the toggle 78, 74, 76, authorizing the pivoting in the open position of the movable contact in the fork 68 by rotation about the axis 70.
  • the opening of the contacts of phase 48, 64; 50, 66 must occur before the separation of the neutral contacts 36, 40, due to the kinematics of the control toggles.
  • the arcs drawn between the phase contacts 48, 64; 50, 66 enter the breaking chambers 56, 58 where they are quickly extinguished.
  • Manual closing of the circuit breaker is carried out by a reverse operation which need not be described.
  • the latch 84 is moved in the direction of the front face 18 towards an unlocking position corresponding to the exhaust of the element 74 from the stop 86.
  • the step 82 is arranged in such a way that the bearing force exerted by the end 80 generates a pivoting force of the element 74 in the unlocked position against of the return force 94.
  • the return spring 96 moves the movable neutral contact 36 and lever 20 assembly in the open position by entraining the element 76.
  • the contact spring 88 displaces the movable fork contact 68 in a first phase in support of the axis 70, and in a second phase of pivoting around this axis 70 towards a position separating the phase contacts 48, 64; 50, 66.
  • the electromagnetic trip device 108 acts after unlocking the mechanism as extractor of the movable contact in the fork 68, the movement of the plunger core 114 being transmitted by the head 118 to the lock 84, which drives the axis 72 by the abutment of the bottom of the light 92 on the axis 72.
  • the assembly is arranged so as to open the phase contacts prior to that of the neutral contacts 36, 40.
  • the pivoting of the lever 20 in the open position brings back the end 80 above the step 82 allowing tilting in the active position of the element 74.
  • the lock 84 returns to the locking position constituting the rigid connection between the elements 74, 76 of the breakable connecting rod.
  • the circuit breaker is closed by pivoting the handle 20 as described above.
  • the use of a contact fork 68 allows a reduction in the size of the arc chutes 56, 58 and a libé - ration sufficient space to the contact housing neutral 36, 40.
  • the arrangement according to the invention of the phase contacts 48, 64; 50, 66 and breaking chambers 56, 58 in the rear zone of the housing 10 frees sufficient space for housing the mechanism and the electromagnetic trip device 108, next to the manual control lever 20.
  • the insulating partition 34 extending in the plane of symmetry of the circuit breaker, ensures physical separation of the conductive parts while leaving available volumes occupying the entire width of the housing for housing the mechanism for controlling the phase contacts and the electromagnetic trip device.
  • the arrangement according to the invention of the constituent elements of the circuit breaker as well as the structure of the control mechanism made it possible to comply with the standardized dimensions, in this case a module width of 17.5 mm.

Landscapes

  • Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Transmitters (AREA)
EP81401078A 1980-08-06 1981-07-06 Kleinschalter mit Abschaltung des Nulleiters und des Phasenleiters Expired EP0045672B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81401078T ATE9750T1 (de) 1980-08-06 1981-07-06 Kleinschalter mit abschaltung des nulleiters und des phasenleiters.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8017429 1980-08-06
FR8017429A FR2488440A1 (fr) 1980-08-06 1980-08-06 Disjoncteur miniature a coupure du neutre et de la phase

Publications (2)

Publication Number Publication Date
EP0045672A1 true EP0045672A1 (de) 1982-02-10
EP0045672B1 EP0045672B1 (de) 1984-10-03

Family

ID=9244985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401078A Expired EP0045672B1 (de) 1980-08-06 1981-07-06 Kleinschalter mit Abschaltung des Nulleiters und des Phasenleiters

Country Status (5)

Country Link
EP (1) EP0045672B1 (de)
AT (1) ATE9750T1 (de)
DE (1) DE3166466D1 (de)
ES (1) ES504527A0 (de)
FR (1) FR2488440A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418754A2 (de) * 1989-09-18 1991-03-27 Mitsubishi Denki Kabushiki Kaisha Strombegrenzungsapparat
FR2689309A1 (fr) * 1992-03-31 1993-10-01 Merlin Gerin Mécanisme de commande à tiroir pour disjoncteur électrique à phase et neutre.
EP0569650A1 (de) * 1992-05-13 1993-11-18 Hager Electro S.A. Phasen- und Nulleiter-Schutzschalter
EP0599800A1 (de) * 1992-11-25 1994-06-01 Felten & Guilleaume Austria Ag Leitungsschutzschalter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830974C (de) * 1949-11-25 1952-02-11 Stotz Kontakt Gmbh Schalteinrichtung fuer Selbstschalter mit Nulleiterkontakten
DE960116C (de) * 1954-01-23 1957-03-14 Licentia Gmbh Selbstschalter mit abschaltbarem Nulleiter
FR1276936A (fr) * 1959-12-28 1961-11-24 Busch Jaeger Duerener Metall Interrupteur-disjoncteur d'installation à socle
DE1180453B (de) * 1962-08-07 1964-10-29 Continental Elektro Ind Ag Selbstschalter, insbesondere Installations-selbstschalter
US3388358A (en) * 1964-04-11 1968-06-11 Bassani Spa Circuit breaker
CH547003A (de) * 1972-07-07 1974-03-15 Landis & Gyr Montlucon Nulleiter-abschalteinrichtung fuer ein zwei- oder mehrpoliges abschaltgeraet.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830974C (de) * 1949-11-25 1952-02-11 Stotz Kontakt Gmbh Schalteinrichtung fuer Selbstschalter mit Nulleiterkontakten
DE960116C (de) * 1954-01-23 1957-03-14 Licentia Gmbh Selbstschalter mit abschaltbarem Nulleiter
FR1276936A (fr) * 1959-12-28 1961-11-24 Busch Jaeger Duerener Metall Interrupteur-disjoncteur d'installation à socle
DE1180453B (de) * 1962-08-07 1964-10-29 Continental Elektro Ind Ag Selbstschalter, insbesondere Installations-selbstschalter
US3388358A (en) * 1964-04-11 1968-06-11 Bassani Spa Circuit breaker
CH547003A (de) * 1972-07-07 1974-03-15 Landis & Gyr Montlucon Nulleiter-abschalteinrichtung fuer ein zwei- oder mehrpoliges abschaltgeraet.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418754A2 (de) * 1989-09-18 1991-03-27 Mitsubishi Denki Kabushiki Kaisha Strombegrenzungsapparat
EP0418754A3 (en) * 1989-09-18 1992-03-25 Mitsubishi Denki Kabushiki Kaisha Current limiting apparatus
FR2689309A1 (fr) * 1992-03-31 1993-10-01 Merlin Gerin Mécanisme de commande à tiroir pour disjoncteur électrique à phase et neutre.
EP0564380A1 (de) * 1992-03-31 1993-10-06 Schneider Electric Sa Antriebsmechanismus mit Schieber für elektrischen Lastschalter mit Nulleiter-Schalter
EP0569650A1 (de) * 1992-05-13 1993-11-18 Hager Electro S.A. Phasen- und Nulleiter-Schutzschalter
EP0599800A1 (de) * 1992-11-25 1994-06-01 Felten & Guilleaume Austria Ag Leitungsschutzschalter

Also Published As

Publication number Publication date
EP0045672B1 (de) 1984-10-03
DE3166466D1 (en) 1984-11-08
FR2488440B1 (de) 1983-02-25
ATE9750T1 (de) 1984-10-15
ES8206909A1 (es) 1982-08-16
FR2488440A1 (fr) 1982-02-12
ES504527A0 (es) 1982-08-16

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