EP2743959B1 - Thermische Auslösvorrichtung und Schutzschalter mit dieser Vorrichtung - Google Patents

Thermische Auslösvorrichtung und Schutzschalter mit dieser Vorrichtung Download PDF

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Publication number
EP2743959B1
EP2743959B1 EP20130188088 EP13188088A EP2743959B1 EP 2743959 B1 EP2743959 B1 EP 2743959B1 EP 20130188088 EP20130188088 EP 20130188088 EP 13188088 A EP13188088 A EP 13188088A EP 2743959 B1 EP2743959 B1 EP 2743959B1
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EP
European Patent Office
Prior art keywords
bimetal strip
called
support
compensation bimetal
compensation
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.)
Active
Application number
EP20130188088
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English (en)
French (fr)
Other versions
EP2743959A1 (de
Inventor
Stéphane Biscarat-Aymes
Samuel Faure
Benoît Hage
Jean-Marie Trico
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
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Schneider Electric Industries SAS
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Publication date
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Publication of EP2743959A1 publication Critical patent/EP2743959A1/de
Application granted granted Critical
Publication of EP2743959B1 publication Critical patent/EP2743959B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1072—Release mechanisms which are reset by opening movement of contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/521—Thermally-sensitive members actuated due to deflection of bimetallic element comprising a plurality of bimetals acting in the same direction
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H01H71/162—Electrothermal mechanisms with bimetal element with compensation for ambient temperature
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition

Definitions

  • the present invention relates to thermal tripping devices for use in low-voltage electrical power cut-off devices in general, and in particular, electrical power cut-off devices installed at home and commonly called "branch circuit breakers".
  • thermal protection device able to actuate the control mechanism of in order to open the contacts when an overcurrent occurs in the circuit to be protected
  • said thermal protection device comprising, on the one hand, an active bimetal capable of producing a heating when an overcurrent occurs above a certain level above the value of the nominal current, this heating leading to a thermal trip e of the control mechanism of the device so as to cause an opening of the contacts, on the other hand, a so-called compensation bimetal, intended to compensate for the variations that the changes in the ambient temperature determine in the circuit temperature, the bimetallic strip of compensation being mounted in rotation about a fixed axis first belonging to a support of the so-called first apparatus, the two bimetals being secured to one another at one of their ends by means of a hooking device, this hooking device being deactivated when the occurrence of an overcurrent, this deactivation causing
  • Such thermal trip devices are known in which the bimetallic bimetallic strip has a bent portion intended to allow it to be fixed by welding to a metal part, while preserving its length.
  • This metal part has a crimped metal axis.
  • This metal shaft is pivotally connected to a metal plate, the active bimetal being welded to this plate.
  • the rotation of the assembly comprising the bimetallic strip, the metal part and the seamed axis, this rotation being caused by the deactivation of the attachment device, makes it possible to obtain the thermal release of the device, this causing the opening contacts.
  • the aforementioned metal part further comprises an orifice for attaching a rod for resetting the assembly.
  • the presence of this bent part generates a certain inaccuracy on the deflection of this bimetallic compensation.
  • the present invention solves these drawbacks and proposes a thermal tripping device as well as a power cut-off device comprising such a device, this device implementing a reduced number of parts, eliminating the need to perform a weld, limiting the number of adjustments to be made, and considerably reducing the phenomena of thermal conduction and direct thermal radiation from the active bimetal to the bimetallic compensator.
  • the subject of the present invention is a thermal tripping device of the kind mentioned above, this device being characterized in that the compensation bimetal is fixedly mounted at least partly in a recess provided in an insulating electrical support part, said support being arranged with respect to the active bimetal in such a way that it forms a screen capable of protecting the bimetallic compensating of the thermal radiation generated by the active bimetal. Thanks to these characteristics, the thermal radiation emitted by the active bimetal is stopped and is not transmitted to the bimetallic compensator.
  • the aforementioned bimetallic strip is plugged at least partly into said part. Thanks to these characteristics, it is no longer necessary to perform a weld and the bent portion intended to allow this weld bimetallic compensation on a metal part is no longer necessary. The imprecision on the deflection generated by the bent portion is removed, and the settings to make the bimetallic parallel are removed.
  • the aforementioned housing comprises a space capable of allowing limited deflection of the bimetallic strip.
  • the aforementioned support piece is made of plastic.
  • this support part comprises, in the vicinity of one of said first ends, a bearing portion adapted to be pivotally mounted about the axis of rotation of the compensation bimetallic strip, said axis being fixed to a fixed support of the device.
  • the pivot connection is made between this part and the axis of rotation, which avoids the crimping of an axis.
  • this bearing portion prevents heat transmission between the two bimetals.
  • the active bimetal is fixed by a said one of its ends, located opposite the so-called first end of the support part, to the aforementioned fixed support of the device, the bearing part allowing to avoid the thermal conduction between the active bimetallic and the bimetallic compensating via the axis of rotation of the bimetallic compensating.
  • Another subject of the present invention is a current-breaking device comprising a thermal tripping device comprising the aforementioned characteristics taken alone or in combination.
  • this apparatus is characterized in that this support part cooperates with a resetting device able to recall the hooking device in the activated position after the opening of the contacts following the occurrence of an overcurrent.
  • the so-called second axis of rotation of the movable contact-carrier shaft and the so-called first axis of rotation of the compensating bimetallic strip are brought close to one another and extend substantially in parallel.
  • the movable contact-carrying shaft comprises a so-called first piece cooperating with a so-called second piece integral in rotation with the compensating bimetallic strip, these two parts being arranged relative to one another to the other such that after triggering of the mechanism, during driving of the movable contact shaft in the direction of the opening of the contacts, the so-called first part rotates the so-called second piece and therefore the bimetallic compensating in a direction opposite to that having triggered the mechanism, until the re-latching of the two bimetallines relative to each other.
  • this apparatus comprises biasing means of the bimetallic strip to a trigger position of the control mechanism.
  • these return means comprise a spring bearing by one of its ends, on the so-called first support of the axis of rotation of the bimetallic strip, and by its opposite end, on the insulating support housing the bimetallic compensation.
  • this apparatus is a branch circuit breaker.
  • FIG. 1 On the figure 1 has been shown a plate P on which are mounted the various elements of an electrical protection device such as a branch circuit breaker allowing an individual to be connected to the electrical network, said circuit breaker being intended to be located between a meter and a table electric.
  • This assembly is intended to be mounted in an insulating housing (not shown), this housing having an opening for the passage of a lever M for the operation of the apparatus and having access openings to input terminals and to output terminals intended to be electrically connected respectively to the meter and to the electrical panel.
  • This device is of the multipole type and mainly comprises a control mechanism 1 and, according to this particular embodiment, four unipolar assemblies 2, 3, 4, 5 comprising three assemblies 2, 3, 4 intended to cut a phase and an assembly.
  • unipolar 5 for the neutral cut each of these sets being associated an input terminal and an output terminal.
  • Each unipolar assembly 2, 3, 4, 5 comprises a fixed contact 6 electrically connected by a flexible conductor to one of the terminals, and a movable contact 7 electrically connected by a flexible conductor to the other of the terminals.
  • This movable contact 7 is supported by a movable contact holder shaft 8 common to all the unipolar assemblies, and adapted to be rotated by a control mechanism 1 between a position in which the fixed and movable contacts 6 and 7 are open. position in which the fixed and mobile contacts are closed.
  • the control of the opening of the contacts can be effected either manually by the operation of a lever M belonging to the control mechanism 1, or automatically by means of a protective device comprising a magnetic protection device 9 against instantaneous overloads of electric current, and a thermal protection device 10 against prolonged overloads of electric current.
  • each unipolar phase assembly 2,3,4 comprises an electric circuit comprising, mounted in series with the fixed contacts 6 and mobile 7, a thermal protection device 10 and a magnetic protection device 9.
  • These two protection devices 9 Each comprise an actuator adapted to act on a so-called transfer rod 11, said bar extending substantially parallel to the alignment direction of the unipolar assemblies 2, 3, 4 and being intended to transmit the trigger or release command. opening of the contacts to the control mechanism 1, which acts to drive the shaft 8 movable contact carrier in an open position of the contacts 6,7 of all unipolar assemblies.
  • This apparatus also comprises a differential protection device comprising a differential relay 38 capable of sending an opening command to the control mechanism 1 during an imbalance caused by a receiver having a fault current, this device not being related with the invention will not be described in more detail.
  • each unipolar subset of said phase 2,3,4 further comprises a so-called containment piece of the cut-off 17, more commonly known as "capoule”, which is intended to be fixed on the plate P and comprises a recess 21 of substantially parallelepipedal shape closed at its lower part by the plate P.
  • This recess 21 forms a breaking chamber intended to accommodate an arc extinguishing chamber 22, a fixed contact 6 and a movable contact 7.
  • the confinement part 17 supports on the one hand the coil 25 of the magnetic protection device 9, which is soldered on a shunt 39 described in the following and on the other hand, the bimetallic strips of the thermal protection device 10, which comprise an active bimetallic strip 26 and a so-called bimetallic bimetallic strip 27 whose function will be described in the following.
  • this apparatus also comprises a nominal current calibration shunt 39 which it is desired to define for the apparatus in question, this shunt being screwed on the distributor and being connected by one of its ends to the coil 25 magnetic protection device.
  • the shunt is in parallel with the coil and the bimetal, the coil and the bimetal being in series or in parallel with each other.
  • this apparatus is connected by connecting the respective mechanisms of the different assemblies to the corresponding phases and to the neutral of the power supply network, by means of the input connectors, while the user's installation to be protected is connected. to the output connectors.
  • the thermal protection device 10 serves to signal lower overcurrents, for example up to ten times the rated current established for the device, while the coil 25 is responsible for reporting overcurrent greater than this value.
  • the magnetic protection device 9 allows instantaneous response to large point overcurrents, such as those resulting from short circuits, so that when such a short circuit occurs, the magnetic device 9 acts on the movable contact carrier 8 so as to cause the opening of the contacts 6,7, by the separation between the movable contacts 7 and the fixed contacts 6.
  • the portion of the current that passes through the bimetal 26 has the effect that it heats up and takes a steady state temperature in which it does not cause automatic triggering.
  • the bimetal 26 When an overcurrent occurs which exceeds the mentioned calibration limit, but does not reach the excessively high values as is the case for overconsumption in the controlled installation, the bimetal 26 signals said overcurrent by a greater heating, said bimetal then undergoes a bending which allows to trigger the initiation of the opening of the contacts at these levels of overcurrent.
  • the so-called active bimetal 26 releases the compensating bi-metal 27, so that the latter operates the transfer bar 11, thereby causing the contacts 6.7 to open.
  • the coil 25 gives rise to a magnetic trip opening of the contacts of the device, whereas when overcurrents occur of lower value which originate from overconsumption in the controlled installation, the active bimetal 26 gives rise, via the compensation bimetal 27, to a thermal tripping which likewise causes the opening of the contacts.
  • a screw is provided, by means of which one can adjust the voltage of the bimetal to adapt the bending of the latter as a function of temperature.
  • the compensating bi-metal 27 makes it possible, in a manner known per se, to compensate for the variations to which the changes in the ambient temperature can give rise in the behavior of the active bimetal 26, so that the thermal tripping always occurs in accordance with the intensity of the nominal calibration, ie by compensating for the variations that changes in the ambient temperature may cause in the temperature that the circuit takes under the effect of the current.
  • the active bimetal 26 is sensitive to the current flowing through it, while the bimetallic strip 27 is sensitive only to ambient temperature.
  • the active bimetal 26 is fixed by one of its ends on a support said first 30.
  • the bimetallic strip 27 is mounted in a second said insulating support 28, comprising at one of its ends a bearing portion 36 adapted to receive the hinge pin 29 of the bimetallic strip 27, said pin being integral with the said first support 30, which is intended to be fixed on the plate P.
  • This bimetallic strip 27 is fixedly mounted in a housing 28a of the support part 28, by plugging 37, so that said bimetallic compensation can move in a space e in a direction substantially perpendicular to the plane in which it s' extends, this functional game allowing only a limited deflection of the bimetallic strip.
  • this support part 28 makes it possible to prevent the transmission of the thermal radiation to the active bimetal 26.
  • this support part is multifunctional, comprising a screen part, a part intended for rearming, and a bearing part.
  • the bimetallic strip is in direct contact only with a plastic material, which limits the conduction phenomena.
  • the two bimetallic strips are connected to each other at their free ends facing each other by means of an attachment device 31.
  • a spring 32 ( fig.12 ) is intended to be mounted around the bearing portion 36 of the insulating support 28, being supported by one of its ends, on the so-called first support 30, and by its opposite end, on the insulating support said second 28 housing the bimetallic strip 27, so that when the attachment device 31 is deactivated, the spring 32 recalls the bimetallic strip 27 in a position in which it presses on the transfer bar 11 so as to cause a triggering of the device that opens the contacts.
  • the second axis of rotation 33 of the shaft 8 movable contact carrier and the axis of rotation said first 29 of the bimetallic strip 27 are brought closer to each other and extend substantially parallel to each other. report to the other.
  • the movable contact shaft-holder 8 is integral with a so-called first part 34 adapted to cooperate with a so-called second part 35 integral with the insulating support 28 of the compensating bimetallic strip 27 so as to recall this compensating bimetallic strip in a position of engagement with the active bimetal 26 against the aforementioned spring 32.
  • this so-called first piece 34 and this so-called second piece 35 are integrally formed respectively with the movable contact holder shaft 8 and with the insulating support 28 of the compensation bimetallic strip 27.
  • the mechanism 1 of the device is in the closed position not triggered.
  • the return spring 32 comes into action so as to drive the piece 28 supporting the compensating bimetallic strip 27 and thus, the bimetallic strip, in rotation about the so-called first axis 29, towards a position in which it acts on the transfer bar 11.
  • the invention applies to any thermal tripping device, as well as to any electrical device for cutting the current comprising it, said device comprising an active bimetallic strip and a bimetallic strip.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)

Claims (12)

  1. Thermische Auslöseeinrichtung eines elektrischen Schaltgeräts, das in einem Isolierstoffgehäuse angeordnet ist und mindestens einen einpoligen Schaltblock (2, 3, 4, 5) und einen Antriebsmechanismus (1) umfasst, welcher Schaltblock eine Schaltkammer umfasst, in der ein feststehender Kontakt (6) und ein beweglicher Kontakt (7) angeordnet sind, wobei die beweglichen Kontakte (7) der einzelnen Schaltblöcke auf einer beweglichen Kontaktträgerwelle (8) montiert sind und händisch oder mithilfe einer in jedem Schaltblock vorhandenen thermischen Schutzeinrichtung (10) automatisch in eine Ausschaltstellung verbracht werden können, welche Schutzeinrichtung dazu ausgelegt ist, den Antriebsmechanismus (1) zu beaufschlagen, derart, dass bei Auftreten eines Überstroms in dem zu schützenden Stromkreis die Abschaltung der Kontakte bewirkt wird, wobei die genannte thermische Schutzeinrichtung (10) einerseits ein sogenanntes aktives Bimetall (26), das sich bei Auftreten eines, den Nennstrom um einen bestimmten Wert übersteigenden Überstroms erwärmt, welche Erwärmung eine thermische Auslösung des Antriebsmechanismus (1) des Schaltgeräts und in der Folge die Abschaltung der Kontakte bewirkt, und andererseits ein sogenanntes Ausgleichs-Bimetall (27) umfasst, das dazu dient, die durch Veränderung der Umgebungstemperatur verursachten Änderungen der Temperatur im Stromkreis zu kompensieren, wobei das Ausgleichs-Bimetall (27) drehbar auf einer sogenannten ersten feststehenden Achse (29) angeordnet ist, die einem sogenannten ersten Träger des Schaltgeräts zugeordnet ist, und die beiden Bimetalle an einem ihrer Enden über ein Rastsystem (31) miteinander verbunden sind, welches Rastsystem (31) bei Auftreten eines Überstroms entrastet, was eine Beaufschlagung des Antriebsmechanismus' (1) durch das Ausgleichs-Bimetall (27) bewirkt,
    dadurch gekennzeichnet, dass das Ausgleichs-Bimetall (27) zumindest teilweise fest in einer Aufnahme (28a) montiert ist, die in einem als elektrischer Isolierstoffträger (28) dienenden Teil ausgebildet ist, wobei der Träger (28) in Bezug zum aktiven Bimetall (26) so angeordnet ist, dass er einen Schirm bildet, der das Ausgleichs-Bimetall (27) gegen die vom aktiven Bimetall (26) erzeugte Wärmestrahlung schützt.
  2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das genannte Ausgleichs-Bimetall (27) zumindest teilweise in das genannte Teil (28) eingeschoben ist.
  3. Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die genannte Aufnahme (28a) einen Bauraum (e) umfasst, der eine begrenzte Biegung des Ausgleichs-Bimetalls (27) erlaubt.
  4. Einrichtung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das genannte, als Träger dienende Teil (28) aus Kunststoff besteht.
  5. Einrichtung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das genannte als Träger (28) dienende Teil im Bereich seines sogenannten ersten Endes einen als Wellenlager (36) ausgebildeten Abschnitt umfasst, der schwenkbar auf der Drehachse (29) des Ausgleichs-Bimetalls (27) montiert ist, welche Achse (29) an einem feststehenden Träger (30) des Schaltgeräts befestigt ist.
  6. Einrichtung nach Anspruch 5, dadurch gekennzeichnet, dass das aktive Bimetall (26) mit seinem sogenannten ersten Ende, welches dem sogenannten ersten Ende des als Träger (28) dienenden Teils gegenüberliegt, am genannten feststehenden Träger (30) des Schaltgeräts befestigt ist, wobei das als Wellenlager (36) ausgebildete Teil eine Wärmeleitung zwischen dem aktiven Bimetall (26) und dem Ausgleichs-Bimetall (27) über die Drehachse (29) des Ausgleichs-Bimetalls (27) verhindert.
  7. Elektrisches Schaltgerät mit einer thermischen Auslöseeinrichtung nach einem der Ansprüche 1 bis 6.
  8. Elektrisches Schaltgerät nach Anspruch 7, dadurch gekennzeichnet, dass das als Träger (28) dienende Teil mit einer Wiederspanneinrichtung (34, 35) zusammenwirkt, die dazu ausgelegt ist, nach dem Abschalten der Kontakte aufgrund eines Überstroms das Rastsystem (31) in Richtung der Verrastungsstellung zu beaufschlagen.
  9. Schaltgerät nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die sogenannte zweite Drehachse (33) der beweglichen Kontaktträgerwelle (8) und die sogenannte erste Drehachse (29) des Ausgleichs-Bimetalls (27) in eine relative Nähelage gebracht werden und annähernd parallel zueinander angeordnet sind und dass die bewegliche Kontaktträgerwelle (8) ein sogenanntes erstes Teil (34) umfasst, das mit einem, drehwirksam mit dem Ausgleichs-Bimetall (27) verbundenen, sogenannten zweiten Teil (35) zusammenwirkt, wobei die beiden Teile (34, 35) so zueinander angeordnet sind, dass nach Auslösung des Mechanismus' (1) bei der Überführung der beweglichen Kontaktträgerwelle (8) in Richtung der Ausschaltstellung der Kontakte (6, 7) das sogenannte erste Teil (34) das sogenannte zweite Teil (35) und damit auch das Ausgleichs-Bimetall (27) in einer, der Auslöse-Wirkrichtung des Mechanismus' (1) entgegengesetzten Richtung drehwirksam mitführt, bis die beiden Bimetalle (26, 27) erneut miteinander verrasten.
  10. Schaltgerät nach Anspruch 9, dadurch gekennzeichnet, dass es Rückstellmittel (32) zur Rückführung des Ausgleichs-Bimetalls (27) in eine Auslösestellung des Antriebsmechanismus' (1) umfasst.
  11. Schaltgerät nach Anspruch 10, dadurch gekennzeichnet, dass die genannten Rückstellmittel (32) eine Feder umfassen, die sich mit einem Ende am sogenannten ersten Träger (30) der Drehachse (29) des Ausgleichs-Bimetalls und mit dem gegenüberliegenden Ende am dem als Isolierstoffträger (28) dienenden Teil abstützt, in dem das Ausgleichs-Bimetall (27) angeordnet ist.
  12. Schaltgerät nach irgendeinem der Ansprüche 7 bis 11, dadurch gekennzeichnet, dass das Schaltgerät als Eingangsleistungsschalter ausgebildet ist.
EP20130188088 2012-12-14 2013-10-10 Thermische Auslösvorrichtung und Schutzschalter mit dieser Vorrichtung Active EP2743959B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1262048A FR2999794B1 (fr) 2012-12-14 2012-12-14 Dispositif de declenchement thermique et appareil de coupure du courant comportant un tel dispositif, en particulier un disjoncteur de branchement.

Publications (2)

Publication Number Publication Date
EP2743959A1 EP2743959A1 (de) 2014-06-18
EP2743959B1 true EP2743959B1 (de) 2015-01-14

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EP (1) EP2743959B1 (de)
ES (1) ES2534569T3 (de)
FR (1) FR2999794B1 (de)
MA (1) MA35390B1 (de)
PT (1) PT2743959E (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104733261B (zh) * 2015-03-23 2017-11-28 厦门宏发开关设备有限公司 一种脱扣器的热补偿结构
CN109599305B (zh) * 2018-11-14 2020-05-19 东莞基业电气设备有限公司 一种适合调试延时脱扣的断路器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579252A (en) * 1945-02-05 1951-12-18 Bulldog Electric Prod Co Circuit breaker
US3234348A (en) * 1960-11-28 1966-02-08 Littelfuse Inc Circuit breaker with ambient temperature compensation
DE10113040B4 (de) * 2001-03-17 2017-02-09 Eaton Industries Gmbh Anordnung zur thermischen Auslösung mit Temperaturkompensation
US6542056B2 (en) * 2001-04-30 2003-04-01 Eaton Corporation Circuit breaker having a movable and illuminable arc fault indicator

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PT2743959E (pt) 2015-02-16
FR2999794A1 (fr) 2014-06-20
EP2743959A1 (de) 2014-06-18
MA35390B1 (fr) 2014-09-01
FR2999794B1 (fr) 2015-01-02
ES2534569T3 (es) 2015-04-24

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