EP4213175B1 - Disjoncteur basse tension avec circuit imprime et prise de tension et procédé de montage - Google Patents

Disjoncteur basse tension avec circuit imprime et prise de tension et procédé de montage Download PDF

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Publication number
EP4213175B1
EP4213175B1 EP22213486.8A EP22213486A EP4213175B1 EP 4213175 B1 EP4213175 B1 EP 4213175B1 EP 22213486 A EP22213486 A EP 22213486A EP 4213175 B1 EP4213175 B1 EP 4213175B1
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EP
European Patent Office
Prior art keywords
voltage
circuit board
low
switching device
protective switching
Prior art date
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Active
Application number
EP22213486.8A
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German (de)
English (en)
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EP4213175A1 (fr
Inventor
Andreas Mundt
Franz Ness
Gerald NÖRL
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.)
Siemens AG
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Siemens AG
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Publication of EP4213175A1 publication Critical patent/EP4213175A1/fr
Application granted granted Critical
Publication of EP4213175B1 publication Critical patent/EP4213175B1/fr
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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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • 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
    • H01H71/08—Terminals; Connections
    • 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
    • H01H71/08—Terminals; Connections
    • H01H71/082—Connections between juxtaposed circuit breakers
    • 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
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • 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
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • 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
    • H01H83/22—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 the other condition being imbalance of two or more currents or voltages

Definitions

  • the invention relates to a low-voltage protective switching device with an insulating housing in which a circuit board is arranged.
  • the invention also relates to an assembly method for such a low-voltage protective switching device.
  • Electromechanical protective switching devices for example circuit breakers, miniature circuit breakers, residual current circuit breakers and arc or fire protection switches - are used to monitor and protect an electrical circuit and are used in particular as switching and safety elements in electrical power supply and distribution networks.
  • the protective switching device is electrically connected to an electrical line of the circuit to be monitored via two or more connection terminals in order to interrupt the electrical current in the respective monitored line if necessary.
  • the protective switching device has at least one switching contact which can be opened when a predefined state occurs - for example when a short circuit or a residual current is detected - in order to disconnect the monitored circuit from the electrical line network.
  • Such protective switching devices are also known in the field of low-voltage technology as series-mounted devices.
  • Circuit breakers are specially designed for high currents.
  • a miniature circuit breaker also known as a miniature circuit breaker, is a so-called overcurrent protection device in electrical installations and is used in particular in low-voltage networks.
  • Circuit breakers and miniature circuit breakers guarantee safe shutdown in the event of a short circuit and protect consumers and systems from Overload, for example, against damage to the electrical cables due to excessive heating as a result of too high an electrical current. They are designed to automatically switch off a circuit to be monitored in the event of a short circuit or if an overload occurs, and thus to separate it from the rest of the line network. Circuit breakers and miniature circuit breakers are therefore used in particular as switching and safety elements for monitoring and protecting an electrical circuit in electrical power supply networks.
  • Miniature circuit breakers are known from the publications EN 10 2015 217 704 A1 , EP 2 980 822 A1 , EN 10 2015 213 375 A1 , EN 10 2013 211 539 A1 or EP 2 685 482 B1 basically known in advance.
  • a single-pole circuit breaker To interrupt a single phase line, a single-pole circuit breaker is usually used, which usually has a width of one division unit (corresponds to approx. 18mm).
  • three-pole circuit breakers are used (as an alternative to three single-pole switching devices), which accordingly have a width of three division units (corresponds to approx. 54mm).
  • Each of the three phase conductors is assigned a pole, i.e. a switching point. If the neutral conductor is to be interrupted in addition to the three phase conductors, we speak of four-pole devices, which have four switching points: three for the three phase conductors and one for the common neutral conductor.
  • compact circuit breakers which, with a housing width of only one module, provide two switching contacts for each connection line, i.e. either for two phase lines (compact circuit breaker type 1+1) or for one phase line and the neutral conductor (compact circuit breaker type 1+N).
  • Such compact circuit breakers in a narrow design are known, for example, from the publications EN 10 2004 034 859 A1 , EP 1 191 562 B1 or EP 1 473 750 A1 basically known in advance.
  • a residual current circuit breaker is a protective device for ensuring protection against a dangerous fault current in an electrical system.
  • a fault current also known as a differential current - occurs when a live part of a line has an electrical contact with earth. This is the case, for example, when a person touches a live part of an electrical system: in this case, the current flows as a fault current through the body of the person concerned and towards earth.
  • the residual current circuit breaker must quickly and safely disconnect all poles of the electrical system from the power supply when such a fault current occurs.
  • FI circuit breaker short: FI switch
  • DI switch residual current circuit breaker
  • RCD Residual Current Protective Device
  • the magnitude of the current in a line leading to an electrical consumer is compared with the magnitude of the current in a line leading back from the electrical consumer, for example a neutral conductor, using a so-called summation current transformer.
  • This has a ring-shaped magnetic core through which the primary conductors (forward and return electrical lines) are passed.
  • the magnetic core itself is wound with a secondary conductor or a secondary winding.
  • the sum of the electrical currents flowing to the consumer is equal to the sum of the electrical currents flowing back from the consumer. If the currents are added vectorially, i.e.
  • the signed sum of the electrical currents in the forward and return lines in the fault-free state is zero: no induction current is induced in the secondary conductor.
  • the sum of the electrical currents flowing in and out recorded in the summation current transformer is not zero.
  • the resulting current difference leads to a voltage proportional to the current difference being induced in the secondary winding, causing a secondary current to flow in the secondary winding.
  • This secondary current serves as a fault current signal and, once a predetermined value is exceeded, leads to the protective switching device being triggered and, as a result - by opening at least one switching contact of the protective switching device - to the shutdown of the correspondingly protected circuit.
  • mains voltage-dependent and mains voltage-independent device types While mains voltage-dependent residual current circuit breakers have control electronics with a trigger that relies on an auxiliary or mains voltage to fulfil their function, mains voltage-independent residual current circuit breakers do not require an auxiliary or mains voltage to implement the triggering function, but usually have a slightly larger summation current transformer to implement the mains voltage-independent triggering, which can generate a larger induction current in the secondary winding.
  • Arc fault switches or fire protection switches are used to detect arc faults that can occur at a defective point in an electrical line - for example, a loose cable clamp or due to a cable break. If the arc fault occurs electrically in series with an electrical consumer, the normal operating current is usually not exceeded because it is limited by the consumer. For this reason, the arc fault is detected by a conventional overcurrent protection device, for example, a fuse or a circuit breaker. To determine whether an arc fault is present, the arc fault switch measures both the voltage and the current over time and analyses and evaluates them with regard to the characteristic arc fault characteristics.
  • AFDD Arc Fault Detection Device
  • AFCI Arc Fault Circuit Interrupter
  • multi-pole residual current circuit breakers whether as a pure residual current circuit breaker or as a combined device design such as FI/LS or RCBO - as well as combined protective switching devices
  • electronic functional modules are used which are required to implement one or more functions of the respective protective switching device.
  • Such electronic functional modules must be arranged, i.e. accommodated and held, in the densely packed housing of the respective protective switching device, and must also be supplied with electrical energy.
  • a generic low-voltage protective switching device is described in the publications CN 210 092 012 U and CN 214 898 161 U disclosed.
  • the low-voltage protective switching device has an insulating housing, which in turn has a front side, a fastening side opposite the front side and narrow and wide sides connecting the front side and the fastening side, as well as a switching contact with a fixed contact arranged in a fixed position in the housing and a moving contact that can move relative to it.
  • the low-voltage protective switching device also has an arc extinguishing chamber. and an arc guide rail, the first end of which is guided under the arc extinguishing chamber and the second end of which projects in the direction of the switching contact.
  • the low-voltage protective switching device also has a circuit board which is arranged between the arc extinguishing chamber and the fastening side, the circuit board being electrically connected to the arc guide rail via a voltage tap.
  • the insulating housing consists of several modules arranged next to one another, with a switching contact and an arc guide rail associated with it being arranged in each of the several modules, the circuit board extending over the several modules and being electrically connected to each of the arc guide rails via its own voltage tap.
  • the space available inside the insulating housing is very limited and must therefore be used efficiently.
  • the circuit board which is used to equip the low-voltage protective switching device according to the invention with additional digital functions - for example communication or monitoring functions - is therefore arranged in the area of the fastening side of the insulating housing to save space.
  • the spatial proximity of the circuit board to the arc guide rail is used to supply voltage to the circuit board. Since the arc guide rail is always under nominal voltage, the circuit board can be supplied with the required operating voltage using the voltage tap, i.e. through an electrically conductive connection to the arc guide rail.
  • a second switching contact and a second arc guide rail associated therewith are arranged in the insulating housing, wherein the circuit board is electrically connected to the second arc guide rail via a second voltage tap.
  • Multi-pole circuit breakers compact low-voltage protective switching devices with a width of only one module and combined protective switching devices, for example of the FI/LS or RCBO type, can also be equipped with additional digital functions.
  • the several modules of the insulating housing are essentially identical in construction.
  • the modular design of the insulating housing means that even larger, different protective switching devices with a width of several division units can be created easily without having to use a large number of housing variants. This means that storage and logistics costs, and thus manufacturing costs, can be significantly reduced.
  • the voltage tap is designed as a leaf spring tap.
  • the design of the voltage tap as a leaf spring tap is a structurally simple option, which is also easy to install without additional tools. This further reduces production costs.
  • the leaf spring tap is mounted on the circuit board as an SMD-mountable component.
  • the circuit board is mounted by inserting it into the insulating housing, whereby contact is made between the arc guide rail arranged in the insulating housing and the circuit board.
  • the circuit board is inserted into the insulating housing and fixed with a housing cover in such a way that, on the one hand, it is held and held in the insulating housing and, on the other hand, the insertion creates contact between the circuit board and the arc guide rail, which allows the circuit board to be supplied with the required operating voltage. By avoiding additional work steps, assembly costs can be significantly reduced.
  • the insulating housing is assembled from several modules in an upstream assembly step, wherein the circuit board is inserted into the several modules, whereby contact is made with the several arc guide rails of the several modules.
  • FIG. 1 a single-pole insulating housing 10 for a low-voltage protective switching device 1 is shown schematically in a side view.
  • the insulating housing 10 has a front side 11, a fastening side 12 opposite the front side 11, and narrow sides 13 and wide sides 14 connecting the front and fastening sides 11, 12.
  • An actuating element 5 for manually actuating the low-voltage protective switching device 1 is arranged on the front side 11.
  • the insulating housing 10 can be fastened to a top hat rail 9 on the opposite fastening side 12 using suitable fastening means.
  • FIG. 2 shows a schematic representation of a multi-pole low-voltage protective switching device 1 in perspective view.
  • the low-voltage protective switching device 1 is made up of four modules (10-1, 10-2, 10-3, 10-4) arranged next to one another (i.e. broad side to broad side), each of which has a single-pole insulating housing 10 with a width B of one pitch unit (TE), which corresponds to approximately 18mm.
  • TE pitch unit
  • FIG. 3 shows a schematic representation of an opened low-voltage protective switching device 1, in which the cover of the front broad side 14 has been omitted in order to allow a view into the interior of the insulating housing 10.
  • a switching contact is used, which has a fixed contact 2 arranged in a fixed position in the insulating housing 10 and a moving contact 3 arranged in a movable manner in the insulating housing 10 via a moving contact carrier 4.
  • the moving contact carrier 4 is connected to a Switching mechanism (not shown) of the low-voltage protective switching device 1 can be actuated, among other things manually via the actuating element 5 arranged on the front 11.
  • a short-circuit tripping device 6 also acts on the switching mechanism in order to interrupt the electrical current flowing through the switching contact in the event of a short circuit.
  • an arc quenching chamber 20 with a plurality of spaced-apart, parallel quenching plates 21 is arranged in the insulating housing 10.
  • an arc guide rail 30 is arranged in the insulating housing 10, the first end 31 of which is guided under the arc quenching chamber 20 and the second end 32 of which protrudes as a free end into a switching contact area of the switching contact.
  • the lower end of the arc extinguishing chamber 20 thus points in the direction of the fastening side 12.
  • the moving contact 3 is moved away from the fixed contact 2 via the moving contact carrier 4, an arc is created - if an electrical current is flowing through the switching contact at this time - which initially burns between the fixed contact 2 and the moving contact 3.
  • the arc commutates to the free end 32, i.e. the base point of the arc on the moving contact side jumps to the free end 32 of the arc guide rail 30.
  • the arc is guided via the guide rail 30 in the direction of the arc extinguishing chamber 20, where it is divided into several partial arcs by the quenching plates 21 and finally extinguished.
  • FIG 4 shows a schematic detailed representation of the low-voltage protective switching device 1, which essentially has the same structure as the one in Figure 3
  • further functional modules can be installed, for example for the implementation of communication or monitoring functions.
  • a voltage tap ie an electrically conductive connection to a live component
  • the voltage tap is advantageously made across all outer conductors (phase and neutral conductors), for example, in order to be able to determine potential differences between the outer conductors in a simple manner.
  • the voltage tap is advantageously arranged on a circuit board 40.
  • the voltage tap is designed as a leaf spring tap 41, which can be mounted on the circuit board 40 as a standard component as part of the SMD assembly of the circuit board.
  • a leaf spring tap 41 is not absolutely necessary in the sense of the invention and should therefore only be understood as an example; other possibilities for implementing a suitable voltage tap are therefore also included.
  • the circuit board 40 is arranged, ie accommodated and held, in the insulating material housing 10 below the arc extinguishing chamber 20, ie between the arc extinguishing chamber 20 and the fastening side 12.
  • a housing cover 19 is provided for fixing and protecting the circuit board 40 from environmental influences, which is fastened to the fastening side 12 of the insulating material housing 10 after the circuit board 40 has been mounted.
  • the spatial position of the circuit board 40 in the insulating housing 10 is extremely advantageous, since the first end 31 of the arc guide rail 30 is also located in this area. Since the arc guide rail 30 is permanently under rated voltage during operation of the low-voltage protective switching device 1 , the voltage tap, and thus the voltage supply of at least one further functional module, can be carried out in a simple manner via the arc guide rail 30.
  • the circuit board 40 As a common voltage supply for the several modules (10-1, 10-2, 10-3, 10-4), which extends in the area of the broad side 12 over the several modules (10-1, 10-2, 10-3, 10-4) forming the low-voltage protective switching device 1 and taps the voltage at the several arc guide rails 30 arranged in the individual modules (10-1, 10-2, 10-3, 10-4) by means of several voltage taps 41 that are clearly assigned to the respective arc guide rail 30.
  • the circuit board 40 has a plurality of voltage taps 41, the number of which corresponds to the number of poles or the outer conductors (phase and neutral conductors) that can be connected to the low-voltage protective switching device 1.
  • the circuit board 40 is inserted into a receiving space formed in the insulating housing 10 and pushed with a housing cover 19.
  • the receiving space is dimensioned in terms of its size so that the circuit board 40 is received and held in the insulating housing 10 by being inserted.
  • the receiving space in the insulating housing 10 is arranged in such a way that the contacting of the circuit board 40 with the first end 31 of the arc guide rail 30 is already realized by inserting the circuit board 40.
  • the contacting is carried out via the voltage tap, which is preferably designed as a leaf spring tap 41.
  • the individual modules (10-1, 10-2, 10-3, 10-4) forming the protective switching device 1 are first assembled "broadside to broadside" in an upstream assembly step before the circuit board 40 is inserted into the module-spanning receiving space - now formed by the several modules (10-1, 10-2, 10-3, 10-4).
  • the circuit board 40 is inserted into the receiving space provided for it, the several arc guide rails 30 are again contacted via a voltage tap arranged on the circuit board 40 that is clearly assigned to the respective arc guide rail 30 and which is advantageously designed as a leaf spring tap 41.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (8)

  1. Disjoncteur de protection basse tension (1), avec
    - un boîtier en matériau isolant (10) présentant un côté avant, un côté de fixation (12) opposé au côté avant (11), ainsi que des côtés étroit et large (13, 14) connectant les côtés avant et de fixation (11, 12),
    - un contact de commutation avec un contact fixe (2) agencé de manière fixe dans le boîtier (10) et un contact mobile (3) qui est mobile par rapport à celui-ci,
    - une chambre d'extinction d'arc (20),
    - un rail de guidage d'arc (30) dont la première extrémité (31) est guidée sous la chambre d'extinction d'arc (20) et dont la seconde extrémité (32) fait saillie en direction du contact de commutation,
    - avec une carte de circuit imprimé (40) qui est agencée entre la chambre d'extinction d'arc (20) et le côté de fixation (14), caractérisé en ce que
    - la carte de circuit imprimé (40) est connectée de manière électriquement conductrice au rail de guidage d'arc (30) par l'intermédiaire d'une prise de tension, et
    - le boîtier en matériau isolant (10) est composé de plusieurs modules (10-1, 10-2, 10-3, 10-4) agencés les uns à côté des autres, dans lequel un contact de commutation et un rail de guidage d'arc (30) associé à celui-ci sont agencés dans chacun des plusieurs modules (10-1, 10-2, 10-3, 10-4), dans lequel la carte de circuit imprimé (40) s'étend sur les plusieurs modules (10-1, 10-2, 10-3, 10-4) et est connectée de manière électriquement conductrice à chacun des rails de guidage d'arc (30) par l'intermédiaire de sa propre prise de tension.
  2. Disjoncteur de protection basse tension (1) selon la revendication 1, dans lequel un deuxième contact de commutation ainsi qu'un deuxième rail de guidage d'arc (30) associé à celui-ci sont agencés dans le boîtier en matériau isolant (10), dans lequel la carte de circuit imprimé (40) est connectée électriquement au deuxième rail de guidage d'arc (30) par l'intermédiaire d'une deuxième prise de tension.
  3. Disjoncteur de protection basse tension (1) selon l'une quelconque des revendications précédentes, dans lequel le boîtier en matériau isolant (10) présente une largeur d'une seule unité de division (TE).
  4. Disjoncteur de protection basse tension (1) selon l'une quelconque des revendications précédentes, dans lequel la pluralité de modules (10-1, 10-2, 10-3, 10-4) du boîtier en matériau isolant (10) sont d'une construction sensiblement identique.
  5. Disjoncteur de protection basse tension (1) selon l'une quelconque des revendications précédentes, dans lequel la prise de tension est formée sous la forme d'une prise à ressort à lame (41).
  6. Disjoncteur de protection basse tension (1) selon la revendication 5, dans lequel la prise à ressort à lame (41) est montée sur la carte de circuit imprimé (40) en tant que composant à chargement SMD.
  7. Procédé de montage pour un disjoncteur de protection basse tension (1) conçu selon l'une quelconque des revendications 1 à 6, dans lequel la carte de circuit imprimé (40) est montée par insertion dans le boîtier en matériau isolant (10), ce qui permet de mettre en contact le rail de guidage d'arc (30) agencé dans le boîtier en matériau isolant (10) avec la carte de circuit imprimé (40).
  8. Procédé de montage selon la revendication 7, dans lequel, dans une étape de montage en amont, le boîtier isolant (10) est monté à partir d'une pluralité de modules (10-1, 10-2, 10-3, 10-4), dans lequel la carte de circuit imprimé (40) est insérée dans la pluralité de modules (10-1, 10-2, 10-3, 10-4), grâce à quoi la mise en contact avec la pluralité de rails de guidage d'arc (30) de la pluralité de modules (10-1, 10-2, 10-3, 10-4) a lieu.
EP22213486.8A 2022-01-13 2022-12-14 Disjoncteur basse tension avec circuit imprime et prise de tension et procédé de montage Active EP4213175B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022200297.0A DE102022200297A1 (de) 2022-01-13 2022-01-13 Niederspannungs-Schutzschaltgerät und Montageverfahren

Publications (2)

Publication Number Publication Date
EP4213175A1 EP4213175A1 (fr) 2023-07-19
EP4213175B1 true EP4213175B1 (fr) 2024-06-12

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EP22213486.8A Active EP4213175B1 (fr) 2022-01-13 2022-12-14 Disjoncteur basse tension avec circuit imprime et prise de tension et procédé de montage

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EP (1) EP4213175B1 (fr)
CN (1) CN116435149A (fr)
DE (1) DE102022200297A1 (fr)

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CN112289648A (zh) * 2020-10-19 2021-01-29 浙江正泰电器股份有限公司 一种电子式剩余电流动作断路器
CN214313069U (zh) * 2020-10-29 2021-09-28 浙江正泰电器股份有限公司 漏电断路器装置
CN214898161U (zh) * 2021-07-01 2021-11-26 天津加美特电气股份有限公司 一种带有简易灭弧装置的n极断路器

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