EP3832688A1 - Elektrisches schaltgerät mit trennbaren kontakten, und mit einem solchen gerät ausgestatteter leistungsschalter - Google Patents

Elektrisches schaltgerät mit trennbaren kontakten, und mit einem solchen gerät ausgestatteter leistungsschalter Download PDF

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Publication number
EP3832688A1
EP3832688A1 EP20211350.2A EP20211350A EP3832688A1 EP 3832688 A1 EP3832688 A1 EP 3832688A1 EP 20211350 A EP20211350 A EP 20211350A EP 3832688 A1 EP3832688 A1 EP 3832688A1
Authority
EP
European Patent Office
Prior art keywords
lever
switching mechanism
contacts
open
axis
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
EP20211350.2A
Other languages
English (en)
French (fr)
Other versions
EP3832688B1 (de
Inventor
Loïc Glomon
Javier Herreros
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 EP3832688A1 publication Critical patent/EP3832688A1/de
Application granted granted Critical
Publication of EP3832688B1 publication Critical patent/EP3832688B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee
    • 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
    • H01H71/128—Manual release or trip mechanisms, e.g. for test purposes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/016—Lever; Rocker

Definitions

  • the present invention relates to an electrical switching apparatus.
  • the invention relates in particular to the field of electrical switching devices with separable contacts, such as molded case circuit breakers or switches.
  • Such switching devices with separable contacts comprise a switching mechanism which has the function of moving electrical contacts of the device between an open state and a closed state, for example in response to an action of a trigger or of a device. operator.
  • toggle switching mechanisms also called “tumblers” in English.
  • FR 2 687 249-A1 describes for example a circuit breaker comprising such a rocker switching mechanism.
  • This switching mechanism comprises an articulated toggle, which is connected to a movable contact on the one hand and is driven by a lower link on the other hand.
  • the lower link is articulated with an upper link, itself tiltably mounted on a hook, the hook cooperating with a latch for maintaining the hook in the locked position.
  • the switching mechanism further comprises a control lever which pivots about a fixed axis and which is connected to one end of a spring, another end of the spring being connected to the axis of the toggle by the middle of the upper connecting rod.
  • the invention more particularly intends to remedy, by proposing a switching device whose contact opening speed is independent of the actuation speed of the control lever.
  • the opening speed of the contacts is independent of the speed of the lever.
  • the opening of the contacts begins when the lever is in an intermediate position offset from neutral, where the spring generates on the parts of the switching mechanism sufficient torque to separate the contacts with sufficient speed.
  • the occurrence of electric arcs is limited, and the durability of the electric contacts and the switching mechanism is lengthened.
  • the figure 1 shows an electrical switching device 2, such as a circuit breaker with separable contacts, in particular a molded case circuit breaker.
  • the device 2 can be another type of electrical switching device, such as a switch or a contactor.
  • the switching apparatus 2 comprises a switching mechanism 4, configured to selectively contact or separate a fixed electrical contact 6 and a movable electrical contact 8.
  • the fixed 6 and mobile 8 contacts are thus separable contacts, which are respectively connected to connection terminals of the device 2 and are for example associated with a pole.
  • the device 2 is multipolar and then comprises a pair of separable contacts 6 and 8 per pole.
  • Mechanism 4 is then common to the poles. What is described is true for one pole and can be transposed to the other poles, the latter not being described so as not to overload the demand.
  • the switching device 2 is designed to be actuated manually by means of a control lever 10.
  • the switching device 2 can also include a trip unit 12, for example an electronic trip unit or an electromechanical trip unit.
  • the switching mechanism 4 is shown in a so-called “closing” configuration, in which the movable contact 8 is in contact with the fixed contact 6, thus allowing the circulation of an electric current. Contacts 6 and 8 are in a state called “closed state”.
  • the switching device 2 comprises a frame 14, shown partially, on which at least some of the elements of the switching device 2 are mounted.
  • the frame 14 can be placed inside a case, not shown, which is made of an electrically insulating material.
  • the fixed contact 6 is fixed relative to the frame 14, while the movable contact 8 is mounted to pivot relative to the frame 14 about a main axis X8.
  • the rotational movements of the parts take place around respective axes parallel to the main axis X8, and the translational movements of the parts take place in planes orthogonal to the main axis X8.
  • the axis X8 is perpendicular to the geometric plane of the figures.
  • the movements of the movable contact 8 are linked to the switching mechanism 4, which here comprises a link of the “toggle” type 16. This link is simply called “toggle 16” in the remainder of the description.
  • the toggle 16 comprises a low connecting rod 18 and a high connecting rod 20, which are hinged to one another at one of their respective ends around an axis X16 of the toggle 16.
  • the X16 axis is parallel to the main X8 axis.
  • the connecting rod 18 is mounted, at the opposite end of the axis X16, pivoting on the movable contact 8 about an axis X18, which is parallel to the main axis X8.
  • the connecting rod 20 is mounted to pivot relative to the frame 14 about an axis, not shown, parallel to the main axis X8 and located at the opposite end of the end comprising the axis X16.
  • the upper connecting rod 20 is linked to a shaft, called the “pole shaft”, which serves to synchronize the opening of several switching devices, of the type of switching device 2, mounted in parallel.
  • the pole tree is not drawn in the figures.
  • the toggle 16 When the mechanism 4 is in the closed configuration, the toggle 16 is in a so-called “deployed” configuration, in which the connecting rods 18 and 20 form between them a maximum amplitude angle, close to 180 ° but strictly less. at 180 °, and the separable contacts 6 and 8 are in the closed state.
  • the toggle 16 In the opening configuration shown in figure 5 , the toggle 16 is completely folded, that is to say that the connecting rods 18 and 20 form between them an angle of minimum amplitude but not zero, and the separable contacts 6 and 8 are said to be “completely open”.
  • the toggle 16 is actuated by a lower link 22, which here has the shape of a hook.
  • the connecting rod 22 has a first end, mounted to pivot relative to the high connecting rod 20 about an axis close to the axis X16 and parallel to the axis X16, and a second end which receives a rod 24.
  • the rod 24 is here cylindrical and centered on an axis X24 parallel to the main axis X8.
  • the mechanism 4 also comprises an upper link 26 connected to the rod 24.
  • the connecting rod 22 is referred to as the lower connecting rod 22 because it is located below the upper connecting rod 26.
  • the switchgear 2 is preferably intended to be mounted so that the top faces to the left of the drawings, as shown by an arrow F1 in the drawings. figures 1 to 3 and 5 .
  • the direction of the earth's gravity is oriented opposite the arrow F1, that is to say horizontally to the right of the drawings.
  • the upper connecting rod 26 partially visible in the figures, has in this example a central body in the form of a triangle, one of the vertices of which has a bearing surface 28.
  • a second vertex of the triangle accommodates the rod 24 linked to the connecting rod. lower 22.
  • a third vertex of the triangle has a tilt axis X30.
  • the upper connecting rod 26 has, in the vicinity of the second apex, an extension which receives a rod 32, the rod 32 being centered on an axis X32 parallel to the main axis X8.
  • the switching mechanism 4 could not include the toggle 16 driven by the connecting rods 22 and 26.
  • Other structures of switching mechanisms 4 are possible, these structures fulfilling the same functions as the illustrated mechanism 4. .
  • the rocker axis X30 parallel to the main axis X8, is provided in an intermediate part of a hook 34.
  • the hook 34 has an elongated shape here, with a first end mounted to pivot relative to the frame 14 about an axis X34 parallel to the axis X8, and a second end in which a lug 36 is provided.
  • a rod 38 of cylindrical shape, is arranged coaxially with the axis X34. In the closing configuration shown in figure 1 , the bearing surface 28 of the upper link 26 is in contact with the rod 38.
  • the lug 36 cooperates with a latch 40.
  • the latch 40 is mounted to pivot relative to the frame 14 about an axis X40, parallel to the axis X8.
  • one end of the latch 40 cooperates with a pawl 42, the pawl 42 preventing clockwise rotational movements of the latch 40 about the axis X40.
  • the pawl 42 is sometimes referred to as a "half-moon lock".
  • the pawl 42 cooperates with a trigger and allows the automatic actuation of the mechanism by the trigger, without manual intervention by an operator.
  • the control lever 10 comprises a support 44 and a handle 46.
  • the handle 46 is integral with the support 44, which is mounted to pivot about a pivot axis X47, which is integral with the frame 14 and parallel to it. 'main axis X8.
  • the X47 axis coincides with the X24 axis, while in the open configuration, the X47 axis is separate from the X24 axis.
  • the support 44 has a symmetrical stirrup shape with respect to a plane orthogonal to the main axis X8.
  • the support 44 comprises arms 48, arranged radially with respect to the pivot axis X47. Each arm 48 has, at a distal end of the axis X47, a bump 50.
  • the lever 10 In the closing configuration shown in figure 1 , the lever 10 is in a first extreme stable position called “closed”. In the opening configuration shown in figure 5 , in which the separable contacts 6 and 8 are completely open, the lever 10 is in another stable extreme position called “open”.
  • the support 44 here cooperates with a fixing rod 52, which is attached to a first end 54 of a spring 56, while a second end 58 of the spring 56 cooperates with the rod 32.
  • the spring 56 is a helical spring which extends in a direction represented by an axis A56.
  • the axis A56 is thus located in a plane orthogonal to the axis X32.
  • the spring 56 is designed to be in tension whatever the relative position of the handle 46 with respect to the upper connecting rod 26.
  • a neutral axis A60 of the upper connecting rod 26 is also defined as being an axis connecting the axis X32 of the rod 32 and the rocking axis X30 of the connecting rod 26.
  • the neutral axis A60 is located in a plane orthogonal to the 'X32 axis.
  • the neutral axis A60 and the axis A56 of the spring 56 are both secant to the axis X32 and define between them a tilt angle ⁇ .
  • the lever 10 In the closing configuration shown in figure 1 , the lever 10 is in the closed position and the tilt angle ⁇ is negative.
  • a so-called “neutral” position of the lever 10 is defined as being an intermediate position between the open and closed positions of the lever 10.
  • the neutral position corresponds to a position in which l 'neutral axis A60 and the axis A56 of the spring 56 are aligned. The angle ⁇ is then zero.
  • the mechanism 4 further comprises a safety device 62, which prevents the lever 10 from being placed in the open position as long as the separable contacts 6 and 8 are not completely open.
  • the safety device 62 comprises a first element 64, assembled to a second element 66 by means of connecting members 68, which are rivets in the example illustrated.
  • the first element 64 comprises, in a central part, a plate 70, which is formed for example by cutting then by folding.
  • the plate 70 is extended, at a first end, by a hook 72.
  • the hook 72 here is located in a plane both orthogonal to the wafer 70 and orthogonal to the main axis X8.
  • the hook 72 cooperates with the rod 32 so as to link the first element 64 in translation with respect to the rod 32.
  • the safety device 62 is articulated in rotation with respect to the lower link 22 about the axis X32. rod 32.
  • the central part 70 passes through a slot 74 of the latch 40 and has, at a second opposite end of the hook 72, a curved part 76, oriented towards the second element 66. Notches 78, visible on the figure 4 , are formed in the central part 70, on the opposite side of the curved part 76.
  • the second element 66 here has a flat shape, produced for example by cutting and then bending a sheet.
  • the second element 66 is connected by a first end to the first element 64 in the vicinity of the hook 72 and comprises, at a second end opposite the first end, a flange 80 oriented towards the first element 64 and located opposite the curved part 76 .
  • the first element 64 and the second element 66 define between them an internal volume 82, in which the axis X40 of pivoting of the latch 40 is housed.
  • the axis X40 is housed with play in the internal volume 82, limiting the amplitude of the rotational movements of the safety device 62 around the axis X32.
  • a face 84 is defined as being a face of the central part 70 oriented away from the internal volume 82.
  • the second element 66 further comprises lateral stops 86, formed on the edges of the second element 66 between the first and second ends.
  • the stops 86 are clearly visible on the figure 4 .
  • Each stop 86 has, in the example illustrated, the shape of an elongated right triangle, with a large side connected to the second element 66, a small side 88 and a hypotenuse, the small side 88 and the hypotenuse being free, the small side being oriented towards the rim 80.
  • the stops 86 are opposite lugs 90 of the latch 40, but without there being any contact force generated between the stops 86 and the lugs 90.
  • the safety device 62 is subjected to its own weight, represented by an F62 arrow on the figures 2 and 3 , which exerts a moment tending to rotate the device 62 about the axis X32 counterclockwise in the drawings. This moment tends to maintain the stops 86 facing the lugs 90.
  • the amplitude of the movement of the safety device 62 is limited by the pivot axis X40 of the latch 40 housed within the internal volume 82.
  • the stops 86 cooperate with the lugs 90, that is to say that a contact force is generated between the stops 86 and the lugs 90.
  • the lugs 90 are arranged radially to the axis X40 and each have a bearing surface 92, oriented away from the axis X40.
  • the moment resulting from the force of contact between the stops 86 and the lugs 90 tends to cause the safety device 62 to pivot around the axis X32 in the counterclockwise direction in the figures, c ' ie upwards.
  • the lever 10 In the closing configuration shown on figure 1 , the lever 10 is in the closed position, and the angle ⁇ has a minimum value, that is to say that the angle ⁇ is negative and has a maximum absolute value.
  • the lug 36 of the hook 34 is housed in the slot 74 of the latch 40, which is retained by the pawl 42.
  • the spring 56 in tension, maintains the upper connecting rod 26 in contact with the rod 38.
  • the lower link 22 pushes the toggle 16 back into the deployed configuration, in which the lower link 18 maintains the separable contacts 6 and 8 in the closed state.
  • the safety device 62 subjected to its weight F62, is in a position such that the stops 86 remain opposite the lugs 90 of the lock 40.
  • an operator rotates the lever 10 about the pivot axis X47 from the closed position to the open position. In the example illustrated in the figures, this corresponds to a pivoting movement of the lever 10 in the clockwise direction.
  • the movement of the handle 46 is represented by an arrow 94 on the figures 1 to 3 .
  • lever 10 moves through a position intermediate between the closed position and the neutral position, as shown in figure. figure 2 .
  • the tension of the spring 56 maintains the surface 28 of the upper connecting rod 26 resting on the rod 38.
  • the spring 56 exerts a torque which opposes the movement of the lever 10 by the operator and maintains the separable contacts 6 and 8. in the closed state.
  • the angle ⁇ is zero, that is to say when the axis A56 of the spring 56 is aligned with the neutral axis A60 and the moment of the tension force of the spring 56 on the upper connecting rod 26 is itself also no.
  • the lever 10 is shown in another intermediate position between neutral and the open position.
  • the angle ⁇ is strictly positive, that is to say that the axis A56 of the spring 56 is located on the other side of the neutral axis A60 with respect to the closed or intermediate configurations represented on figures 1 or 2 .
  • the bump 50 being integral with the handle 46, the pivoting movement of the lever 10 is taken up by the bump 50, the movement of the bump 50 being represented by an arrow 96 on the figure 4 .
  • the bump 50 of the support 44 of the handle 46 comes to bear on the face 84 of the first element 64 of the safety device 62, as illustrated in the figure. figure 4 .
  • the bump 50 resting on the face 84, generates a force the moment of which opposes the moment of the weight of the device 62 and the moment of the force of contact between the stops 86 and the pins 90.
  • the device 62 is thus pushed back by the bump 50 and also pivots around the axis X32 in the direction of the arrow 96, that is to say here in the clockwise direction.
  • the stop 86 still cooperates with the lug 90.
  • the side 88 is still in contact with the bearing surface 92, preventing any translational movement of the device 62 and thus preventing the tilting of the upper link 26 despite the moment of spring tension force 56.
  • the lugs 90 and the stops 86 are protrusions which together constitute a retaining device, which prevents the movements of the lower link 22, and therefore of the toggle 16, while the lever 10 is in a position intermediate beyond neutral position.
  • the stops 86 are formed on the second element 66 of the safety device 62, while the lugs 90 are formed on the latch 40, which is housed in the internal volume 82 of the safety device 62.
  • the retaining device and the locking device safety 62 include common parts, and by extension the retainer is integrated with the safety device 62.
  • the The retainer prevents the switching mechanism 4 from moving the contacts 6 and 8 to their open state.
  • the angle ⁇ is strictly positive, and the moment of the tension force of the spring 56 on the upper connecting rod 26 has a non-zero value, which does not depend on the speed of movement of the lever. 10, but depends on the value of the angle ⁇ in the release position of the lever 10.
  • the upper link 26 then swings around the rocker axis X30, driving the lower link 22, which folds the toggle 16, which separates the movable contact 8 from the fixed contact 6.
  • the speed of separation of the contacts 6 and 8 does not depend on the speed of movement of the lever 10, but depends on the moment of the tension force of the spring 56 when the lever 10 is in the released position.
  • the spring 56 and the geometry of the parts are designed so that the speed of separation of the contacts 6 and 8 is sufficient to reduce the risks. of electric arcs at an acceptable level during manual opening.
  • the angle ⁇ is greater than a strictly positive minimum value so that the moment of the force of the spring 56 is not zero. Conversely, an angle ⁇ that is too large is preferably avoided so that the device 2 is not too bulky.
  • the angle ⁇ in the release position of the lever 10 is for example between 1 ° and 6 °, preferably between 2 ° and 5 °, more preferably between 3 ° and 4 °.
  • the bumps 50 bear against the face 84 of the central part 70, preventing the rotation of the handle 46 in the direction of the arrow 94, that is to say preventing the rotation of the lever 10 beyond the release position.
  • the device 62 is in a so-called "advanced" position, as shown in the figure. figure 5 , in which the notches 78 are located opposite the bumps 50 and allow the continuation of the pivoting movement of the lever 10 beyond the release position. The lever 10 is then in the open position.
  • the latch 40 then pivots clockwise on the figure 1 , around the axis X40, releasing the lug 36 of the hook 34. At the same time, the rotation of the latch 40 around the axis X40 causes the rotation of the lugs 90 around the axis X40, thus interrupting the cooperation of the stops 86 with lugs 90.
  • the retaining device does not interfere with the proper functioning of the device 62 and of the latch 40 neither in the case of automatic release, nor in the case of manual opening.
  • the safety device 62 is held in position by gravity, under the effect of its own weight.
  • a return device such as a spring, can be provided to keep the stops 86 facing the lugs 90 when the switching device 2 is in the closed configuration.
  • a plate of the type of the plate 70 is able to deform elastically under the action of the bumps 50, while the second element 66, which comprises the stops 86, is rigid.
  • the stops 86 are opposite the lugs 90.
  • the plate has a convexity oriented towards the second element 66, and the second element 66, and therefore the stops 86 move away from the plate, in a position where the stops 86 no longer cooperate with the lugs 90.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP20211350.2A 2019-12-03 2020-12-02 Elektrisches schaltgerät mit trennbaren kontakten und damit versehener schutzschalter Active EP3832688B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1913658A FR3103959B1 (fr) 2019-12-03 2019-12-03 Appareil de commutation électrique à contacts séparables et disjoncteur comprenant un tel appareil

Publications (2)

Publication Number Publication Date
EP3832688A1 true EP3832688A1 (de) 2021-06-09
EP3832688B1 EP3832688B1 (de) 2023-11-08

Family

ID=70456845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20211350.2A Active EP3832688B1 (de) 2019-12-03 2020-12-02 Elektrisches schaltgerät mit trennbaren kontakten und damit versehener schutzschalter

Country Status (5)

Country Link
US (1) US11205553B2 (de)
EP (1) EP3832688B1 (de)
CN (1) CN112908744A (de)
ES (1) ES2971080T3 (de)
FR (1) FR3103959B1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4935712A (en) 1987-09-26 1990-06-19 Mitsubishi Denki Kabushiki Kaisha Operation mechanism of a circuit breaker allowing automatic or manual operation
FR2687249A1 (fr) 1992-02-07 1993-08-13 Merlin Gerin Mecanisme de commande d'un disjoncteur a boitier moule.
WO2008034530A1 (de) * 2006-09-20 2008-03-27 Moeller Gmbh Elekrtrisches schaltgerät
EP3291274A1 (de) * 2015-04-28 2018-03-07 Seari Electric Technology Co., Ltd. Schmelzschweissisolationsmechanismus für den betätigungsmechanismus eines schutzschalters

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6373009B1 (en) * 2000-02-14 2002-04-16 Eaton Corporation Fail safe safety switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4935712A (en) 1987-09-26 1990-06-19 Mitsubishi Denki Kabushiki Kaisha Operation mechanism of a circuit breaker allowing automatic or manual operation
FR2687249A1 (fr) 1992-02-07 1993-08-13 Merlin Gerin Mecanisme de commande d'un disjoncteur a boitier moule.
WO2008034530A1 (de) * 2006-09-20 2008-03-27 Moeller Gmbh Elekrtrisches schaltgerät
EP3291274A1 (de) * 2015-04-28 2018-03-07 Seari Electric Technology Co., Ltd. Schmelzschweissisolationsmechanismus für den betätigungsmechanismus eines schutzschalters

Also Published As

Publication number Publication date
FR3103959A1 (fr) 2021-06-04
US11205553B2 (en) 2021-12-21
EP3832688B1 (de) 2023-11-08
ES2971080T3 (es) 2024-06-03
FR3103959B1 (fr) 2022-06-10
CN112908744A (zh) 2021-06-04
US20210166906A1 (en) 2021-06-03

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