EP4068329A1 - Dispositif destiné à l'agencement sur barres de distribution comprenant un appareil de commutation et un composant électronique - Google Patents

Dispositif destiné à l'agencement sur barres de distribution comprenant un appareil de commutation et un composant électronique Download PDF

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Publication number
EP4068329A1
EP4068329A1 EP21166330.7A EP21166330A EP4068329A1 EP 4068329 A1 EP4068329 A1 EP 4068329A1 EP 21166330 A EP21166330 A EP 21166330A EP 4068329 A1 EP4068329 A1 EP 4068329A1
Authority
EP
European Patent Office
Prior art keywords
side wall
electronic component
housing
switching device
current conductor
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.)
Pending
Application number
EP21166330.7A
Other languages
German (de)
English (en)
Inventor
Patrik SCHMIDT
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.)
Jean Mueller Elektrotechnische Fabrik GmbH
Original Assignee
Jean Mueller Elektrotechnische Fabrik GmbH
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 Jean Mueller Elektrotechnische Fabrik GmbH filed Critical Jean Mueller Elektrotechnische Fabrik GmbH
Priority to EP21166330.7A priority Critical patent/EP4068329A1/fr
Publication of EP4068329A1 publication Critical patent/EP4068329A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0271—Bases, casings, or covers structurally combining a switch and an electronic component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/0266—Structural association with a measurement device, e.g. a shunt
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/12—Adaptation for built-in fuse
    • H01H31/122—Fuses mounted on, or constituting the movable contact parts of, the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses

Definitions

  • the present invention relates to a device for arrangement on current busbars, having a switching device and an electronic component.
  • Switching devices in particular electrical load switches, in particular those with fuses, are used, for example, in industry and power plants both as busbar feeder switches and as outgoing switches for switching highly inductive loads (e.g. motors) including overloads.
  • highly inductive loads e.g. motors
  • the switching device according to the invention is in particular a switching device that covers a current range in which cylindrical fuses are used, for example D0 fuses.
  • the switching device according to the invention can be used, for example, as a back-up fuse for series installation devices, as a protective device for drives in production facilities and/or in photovoltaic installations.
  • switching devices are equipped with electronic components for measuring and processing measured values are, for example, to permanently monitor or measure all current- and voltage-relevant data and/or to monitor electrical fuses and their status installed in the switching device or to monitor the switching status of the switching device.
  • a device for arranging busbars having an NH fuse or NH fused switch and a device carrier strip. Furthermore, the device has a converter wired to a measured value recorder or a terminal or plug strip.
  • the separate device carrier strip accommodates the converter and the terminal or plug strip or the measured value recorder are assigned to the device carrier strip.
  • the equipment carrier bar is arranged between the busbars and the switching device, the switching device being placed on the equipment carrier bar, as a result of which the device has a greater space requirement in the vertical direction than the switching device as such.
  • a separate sensor can be mounted on the device.
  • the object of the present invention is to create a device for arranging busbars with a switching device and an electronic component, which is characterized by particularly simple handling and also by a particularly small and/or favorable installation space requirement. Furthermore, the object of the invention is to create a device with a switching device and an electronic component, in which a particularly simple and rapid replacement or retrofitting of an existing switching device with an electronic component is possible.
  • the device according to the invention for arrangement on busbars has a switching device and an electronic component.
  • the switching device is in particular a fuse strip or a switch disconnector strip.
  • the switching device has a front side, which is to face away from the busbars, and has receiving areas for fuses arranged in a longitudinal direction of the switching device.
  • the reception areas for the fuses are particular designed to accommodate a cylindrical fuse, in particular a D0 fuse.
  • An input current conductor and an outgoing current conductor are assigned to the respective receiving area.
  • the input current conductor and the outgoing current conductor are electrically connected to one another when the fuse is arranged in the receiving area, with the fuse interrupting the electrical connection between the input current conductor and the outgoing current conductor when an overcurrent occurs.
  • the switching device also has a housing with a side wall, preferably running in the longitudinal direction, with the electronic component being mounted in the side wall.
  • This arrangement of the electronic component in the side wall of the switching device has the advantage that the device has a particularly favorable space requirement, in particular the switching device does not require any additional space due to the additional electronic component in the longitudinal direction of the switching device and in a vertical direction of the switching device.
  • the installation space required for the device compared to the installation space required for the switching device is not increased at all or only in the transverse direction of the switching device, i.e. in the area of the side wall in or on which the electronic component is mounted, compared to the switching device as such.
  • the electronic component is detachably connected to the side wall in the area of an outside of the side wall, in particular if the electronic component can be plugged onto the side wall from the outside.
  • the electronic component is preferably plugged on in a transverse direction of the switching device.
  • the electronic component is used in particular for current measurement and/or voltage measurement and/or energy measurement and/or power measurement and/or fuse monitoring.
  • the receiving areas serve in particular to receive the fuses on the front.
  • At least one of the input current conductors and/or at least one of the outgoing current conductors has a section that protrudes in the direction of the side wall in relation to the other sections of the input current conductor or the outgoing current conductor.
  • the current-carrying component that is used for current measurement using the Hall sensor is arranged particularly close to the Hall sensor in order to obtain particularly precise measured values and in particular to avoid interference fields that affect the accuracy of the negatively affect measurement.
  • At least one of the input current conductors and/or at least one of the outgoing current conductors has a plate-shaped section, with the plate-shaped section being designed in such a way that a main extension surface of the plate-shaped section faces the side wall.
  • the main extension surface of the plate-shaped section runs parallel to the side wall. It is considered particularly advantageous if the plate-shaped section forms the protruding section.
  • the electronic component and/or the switching device has a shielding plate, this shielding plate being arranged in the area of the Hall sensor of the electronic component in order to shield it from interference fields.
  • At least one of the input current conductors and/or at least one of the outgoing current conductors has a U-shaped intermediate section with two legs and a web connecting these two legs, with the legs facing away from the side wall.
  • the web forms the protruding section and/or the plate-shaped section.
  • the side wall preferably has a bearing structure on the outside of the side wall for storing the electronic component.
  • the storage structure can be, for example, a plug-on area or plug-in area onto which the electronic component is plugged or into which the electronic component is plugged.
  • the bearing structure is in particular a recess, with the electronic component being mounted in the recess.
  • the side wall it is also entirely conceivable for the side wall to have, on its outside, receiving areas for connecting means that are accessible from the outside, for example a thread, in particular a screw dome, for receiving a screw, with this screw being used to fasten the electronic component to the side wall of the switching device.
  • the side wall of the housing has a recess, the recess accommodating the electronic component, preferably completely. It is considered particularly advantageous if the side wall has a number of recesses corresponding to the number of receiving areas, with each recess receiving an electronic component. With such a design with a plurality of recesses, it is entirely conceivable that not each of the recesses is fitted with an electronic component, for example if only one of the several recording areas or their backups should be monitored.
  • the plate-shaped section and/or the protruding section adjoins the side wall in the area of the recess.
  • the arrangement in the area of the recess has the advantage that the electronic component is arranged particularly close to the current-carrying components of the switching device due to the arrangement in the recess, in particular is arranged closer to the current-carrying components than if the electronic component were not arranged in a recess.
  • a Hall sensor of the electronic component can be arranged in the area of the recess, so that the Hall sensor is arranged particularly close to the current-carrying component, for example the input current conductor or outgoing current conductor.
  • the electronic component has a circuit board or circuit board, in particular a measurement circuit board, the circuit board interacting mechanically with the side wall to mount the electronic component in the side wall.
  • the circuit board is preferably mounted in the recess of the side wall, in particular mounted in a latching manner in the recess.
  • the latching means of the side wall can be, for example, an outwardly protruding, elastically deformable latching projection, the latching projection engaging behind the electronic component, in particular the circuit board, in the latching position on a side facing away from the switching device.
  • the latching means can preferably be released from an outside of the switching device in order to enable the electronic component to be easily removed from the side wall.
  • the electronic component has at least one contacting element, with the respective contacting element penetrating the side wall. This eliminates the need for complex wiring and the like.
  • the contact is preferably made when the electronic component is mechanically connected to the switching device. It is considered particularly advantageous if the contacting element is designed as a spring contact and/or has a spring contact.
  • the respective contacting element preferably makes contact with one of the input current conductors and/or one of the outgoing current conductors.
  • the electronic component in which the electronic component is arranged completely in the respective recess, is in particular an electronic component that is used for fuse monitoring.
  • Such safety monitors can be designed in a particularly simple manner, so that their installation space requirement is particularly small.
  • an electronic component for fuse monitoring is essentially formed by the electronic component having two contacting elements, with one contacting element contacting the input current conductor and the other contacting element contacting the outgoing current conductor of the respective receiving area, with the two contacting elements forming a closed circuit with a Have light-emitting diode, wherein the electrical circuit has a high-value resistor.
  • the fuse If the fuse is intact, only an extremely low current flows through the circuit of the electronic component, so that the light-emitting diode does not light up or does not light up visibly. If the fuse blows, a current sufficient to cause the diode to glow detectably flows through the circuitry of the electronic component. Accordingly, when the diode lights up, it indicates that the fuse has blown.
  • the electronic component has a separate electronics housing, with the electronics housing being mounted in the side wall of the housing of the switching device.
  • the electronics housing is preferably mounted in the housing in a clamping and/or latching manner.
  • the electronics housing is preferably mounted detachably in the housing of the switching device.
  • the electronics housing is open on its side facing the switching device.
  • the electronics of the electronic component can be arranged particularly close to the side wall of the housing.
  • the electronics housing preferably protrudes in the transverse direction relative to the side wall.
  • the electronics housing terminates flush with the housing of the switching device in the vertical direction and/or in the longitudinal direction.
  • the electronics housing has ventilation openings, in particular ventilation slots.
  • the electronics component has a printed circuit board or printed circuit board, with the electronics housing accommodating the printed circuit board.
  • the circuit board is in particular a measurement circuit board. It is therefore considered to be particularly advantageous if the circuit board extends over all receiving areas for fuses of the switching device.
  • the side wall of the housing of the switching device is finger-safe is trained. This makes it possible to use the switching device even without electronic components arranged on it and still ensure the necessary safety for the operator.
  • the electronics housing is also finger-safe when it is connected to the switching device. Furthermore, it is considered particularly advantageous if, in an embodiment of the electronic component without an electronic housing, the electronic component mounted in the side wall, in particular the circuit board, is finger-safe.
  • through-openings formed in the side wall for example through-openings for the contacting elements of the electronic component, are designed to be finger-safe.
  • the electronic component preferably has a device for measuring a current flowing through the input current conductor and/or the outgoing current conductor and/or a voltage present at the input current conductor and/or outgoing current conductor. Furthermore, it is considered advantageous if the electronic component has a voltage tap for tapping off a voltage present at the input current conductor and/or at the outgoing current conductor. It is quite conceivable that the voltage tap is used to supply the electronic component with current or voltage.
  • the electronic component preferably has a device for fuse monitoring.
  • the device for measuring a current flowing through the input current conductor and/or the outgoing current conductor has a Hall sensor.
  • the Hall sensor it is possible to carry out a corresponding current measurement without contact.
  • the Hall sensor is preferably mounted in a recess in the side wall.
  • the electronic component has at least one display means, for example a light-emitting diode, with the display means being visible from the front side of the switching device.
  • This display means can be used, for example, to display a state of the electrical fuse arranged in the receiving area.
  • the housing wall and/or any front cover of the switching device and/or the electronics housing of the electronics component to have a viewing window or a recess.
  • the electronic component preferably has a communication interface that is accessible from the outside.
  • the communication interface is preferably a hardware interface.
  • the communication interface is, for example, a Modbus/RTU interface, a Modbus/TCP/IP interface, a CAN bus interface, an Ethernet interface or a Profinet interface. It is considered particularly advantageous if the interface is accessible from the front side of the switching device and/or from a front side of the switching device.
  • the electronic component has a connection for an external power supply.
  • the switching device has a number of receiving areas for fuses that corresponds to the number of busbars.
  • the Figures 1 to 5 show a switching device 1 for arrangement on busbars 3 of a busbar system, the switching device 1 presently having a number of receiving areas 6 corresponding to the number of busbars 3 for the front receiving of cylindrical fuses (not shown in detail), presently D0 fuses, with the receiving areas 6 in are arranged in a row along a longitudinal direction X of the switching device 1 .
  • An input current conductor 7 and an outgoing current conductor 8 are assigned to the respective receiving area 6 .
  • the switching device 1 has a front side 4 which faces away from the busbars 3 and a rear side 5 which faces the busbars 3 .
  • the switching device 1 has two opposite side walls 11, 12 running parallel to one another, the second side wall 12 being essentially flat, whereas the first side wall 11 has three recesses 18.
  • the switching device 1 has a housing with two housing parts 9 , 10 , the housing part 9 having the first side wall 11 and the housing part 10 having the second side wall 12 .
  • the two side walls 11, 12 extend essentially in the longitudinal direction X and in the vertical direction Z and perpendicular to a transverse direction Y of the switching device 1.
  • the switching device 1 also has a front cover 13 which is pivotably mounted in the housing 9, 10 to cover the front of the three receiving areas 6 on.
  • the switching device 1 has an actuating lever 14 that can be actuated manually, this actuating lever 14 being used to switch the switching device 1 .
  • the actuating lever 14 interacts with a not-shown snap-action switch mechanism, which in turn works with a slide mounted in the housing 9, 10 31 interacts, which is used to switch switching contacts of the switching device 1.
  • bridging contacts 15 are mounted in the slide, these bridging contacts 15 being spaced apart from busbar contacts 16, which are used for contacting the busbars 3, when the switching device 1 is in a switched-off state.
  • the bridge contacts 15 are spaced apart from the respective input current conductor 7 in the switched-off position. This state is in the figure 5 shown.
  • the slide 31 is shifted in such a way that the respective bridge contact 15 contacts both the busbar contact 16 and the input current conductor 7 .
  • the device has three separate electronic components 2 in addition to the switching device 1, the three electronic components 2 being mounted in a latching manner in the respective recess 18 of the side wall 11.
  • the electronic component 2 has a measurement circuit board 17, with a display means 28 in the form of a light-emitting diode and two contacting elements 21 in the form of spring contacts being attached to this measurement circuit board 17. Like that one in particular 8 it can be seen that the contacting elements 21 pass through openings 20 in the side wall 11 of the switching device 1 and contact the input current conductor 7 and the outgoing current conductor 8 of the respective receiving area 6 6 and 7
  • the embodiment of the device shown is the electronic component 2 for a fuse monitor, with the display means 28 lighting up when the electrical fuse is triggered.
  • both the housing part 9 and the front cover 4 have recesses 29 in the area of the display means 28 .
  • the respective electronic component 2 is arranged completely within the recess 18, so that an extension of the device in the transverse direction Y is not increased compared to an extension of the switching device 1 in the transverse direction Y.
  • the electronic components 2 can be plugged onto the side wall 11 from the outside in the direction of the arrow 32 in the transverse direction Y.
  • the side wall 11 has elastically deformable latching means 19 in the region of the recesses 18, these latching means 19 engaging behind the electronic component 2, namely the circuit board 17, on a side of the circuit board 17 facing away from the switching device 1.
  • the electronic components 2 can thus be connected to the switching device 1 without tools.
  • the Figures 10 to 16 show a second embodiment of the device, the switching device 1 in this embodiment being identical to the switching device 1 in the first embodiment. Accordingly, different electronic components 2 can be connected to one and the same switching device 1 .
  • the electronic component 2 enables not only the fuse monitoring but also a measurement of the current flowing through the respective input current conductor 7 .
  • the electronic component 2 has a circuit board 17 that extends over all three receiving areas 6 , this circuit board 17 being equipped with two contacting elements 21 and a Hall sensor 23 for each of the three receiving areas 6 .
  • the contacting elements 21 are in turn used for contacting the respective input current conductor 7 and the respective outgoing current conductor 8 for the purpose of fuse monitoring.
  • the Hall sensor 23 is used to measure the current flowing through the input current conductor 7, with the respective Hall sensor 23 also being shielded by a shielding plate 22 in order to shield interference fields.
  • the input current conductor 7 has a plate-shaped section 24 that protrudes in the direction of the side wall 11 in relation to the other sections of the input current conductor 7, with the plate-shaped section 24 being designed in such a way that a main extension surface of the plate-shaped section 24 of the side wall 11 faces, in the present case the plate-shaped section 24 or its main extension surface runs parallel to the side wall 11 .
  • the protruding, plate-shaped section 24 borders on the side wall 11 in the area of the recess 18, with the Hall sensor 23 likewise bordering on the recess 18 in the transverse direction Y, as a result of which the Hall sensor 23 is arranged particularly close to the plate-shaped section 24. This has a particularly favorable effect on the accuracy of the current measurement.
  • the 9 shows the input current conductor 7 in a perspective view.
  • a sheet metal development of the input current conductor 7 is essentially S-shaped in the present case.
  • the electronic component 2 also has a communication interface 26 attached to the circuit board 17 .
  • the electronic component 2 has a separate electronics housing 27, with the electronics housing 27 being mounted in a latching manner in the side wall 11 of the housing 9, 10.
  • the electronics housing 27 has a plurality of latching means 19 which latch into corresponding counter-structures of the housing part 9 .
  • the electronics housing 27 protrudes from the side wall 11 in the transverse direction Y and is flush with the housing 9, 10 in the vertical direction Z and in the longitudinal direction X.
  • the electronics housing 27 has a number of ventilation openings and recesses 29, the recesses 29 being used so that the display means 28, namely light-emitting diodes, connected to the circuit board 17 are visible from the front side 4 of the device.
  • the electronic component 2 also has a light barrier 25 connected to the board 17 , this light barrier 25 serving to detect the switch position of the slide 31 .
  • a non-illustrated shielding structure can be brought out of the side wall 11 of the housing 9 , 10 , this shielding structure being connected to the slide 31 .
  • this shielding structure or at least a section of this shielding structure is located in the area of the light barrier 25 or outside the light barrier 25, whereby a switch position of the slide 31 can be detected by means of the light barrier.
  • the circuit board 17 and the electronics housing 27 can thus be pushed in the transverse direction Y from the outside onto the side wall 11 in the direction of the arrow 30 . It is quite conceivable that first the circuit board 17 is connected to the housing 9, 10 of the switching device 1 and then the electronics housing 27 is connected to the housing 9, 10 of the switching device 1.
  • the Figures 17 and 18 show a third embodiment of the invention, which differs from the second embodiment essentially in the design or assembly of the circuit board 17.
  • the third embodiment has no Hall sensors for current measurement.
  • shielding plates can be dispensed with in the third embodiment.
  • the third embodiment is essentially used for fuse monitoring, with the status of the respective fuse being able to be transmitted to external evaluation or monitoring and/or control devices via the communication interface 26 .
EP21166330.7A 2021-03-31 2021-03-31 Dispositif destiné à l'agencement sur barres de distribution comprenant un appareil de commutation et un composant électronique Pending EP4068329A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21166330.7A EP4068329A1 (fr) 2021-03-31 2021-03-31 Dispositif destiné à l'agencement sur barres de distribution comprenant un appareil de commutation et un composant électronique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21166330.7A EP4068329A1 (fr) 2021-03-31 2021-03-31 Dispositif destiné à l'agencement sur barres de distribution comprenant un appareil de commutation et un composant électronique

Publications (1)

Publication Number Publication Date
EP4068329A1 true EP4068329A1 (fr) 2022-10-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21166330.7A Pending EP4068329A1 (fr) 2021-03-31 2021-03-31 Dispositif destiné à l'agencement sur barres de distribution comprenant un appareil de commutation et un composant électronique

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Country Link
EP (1) EP4068329A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29705224U1 (de) 1997-03-22 1997-06-26 Mueller Jean Ohg Elektrotech Einrichtung mit einer NH-Sicherungs- oder NH-Lastschaltleiste sowie einem Wandler
EP1058283A2 (fr) * 1999-06-04 2000-12-06 M. Schneider, Schaltgerätebau und Elektroinstallationen Gesellschaft m.b.H. Système de surveillance pour appareils de commutation à basse tension
EP1271583A2 (fr) * 2001-06-19 2003-01-02 Jean Müller GmbH Elektrotechnische Fabrik Dispositif de commutation multipolaire pour utilisation avec des jeux de barres omnibus
DE102017011374A1 (de) * 2017-12-11 2019-06-13 Fachhochschule Südwestfalen Schutzeinrichtung für Niederspannungsanlagen mit integrierter Messelektronik
EP3671786A1 (fr) * 2018-12-19 2020-06-24 Jean Müller GmbH Elektrotechnische Fabrik Agencement d'une pièce de support, d'une pièce supérieure et d'un couvercle d'un dispositif de commutation pourvu de composants d'une électronique intégrés dans ledit agencement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29705224U1 (de) 1997-03-22 1997-06-26 Mueller Jean Ohg Elektrotech Einrichtung mit einer NH-Sicherungs- oder NH-Lastschaltleiste sowie einem Wandler
EP1058283A2 (fr) * 1999-06-04 2000-12-06 M. Schneider, Schaltgerätebau und Elektroinstallationen Gesellschaft m.b.H. Système de surveillance pour appareils de commutation à basse tension
EP1271583A2 (fr) * 2001-06-19 2003-01-02 Jean Müller GmbH Elektrotechnische Fabrik Dispositif de commutation multipolaire pour utilisation avec des jeux de barres omnibus
DE102017011374A1 (de) * 2017-12-11 2019-06-13 Fachhochschule Südwestfalen Schutzeinrichtung für Niederspannungsanlagen mit integrierter Messelektronik
EP3671786A1 (fr) * 2018-12-19 2020-06-24 Jean Müller GmbH Elektrotechnische Fabrik Agencement d'une pièce de support, d'une pièce supérieure et d'un couvercle d'un dispositif de commutation pourvu de composants d'une électronique intégrés dans ledit agencement

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