EP2367192B1 - Dispositif de commutation destiné à la séparation de trois conducteurs électriques et d'un conducteur neutre - Google Patents

Dispositif de commutation destiné à la séparation de trois conducteurs électriques et d'un conducteur neutre Download PDF

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Publication number
EP2367192B1
EP2367192B1 EP20100002732 EP10002732A EP2367192B1 EP 2367192 B1 EP2367192 B1 EP 2367192B1 EP 20100002732 EP20100002732 EP 20100002732 EP 10002732 A EP10002732 A EP 10002732A EP 2367192 B1 EP2367192 B1 EP 2367192B1
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EP
European Patent Office
Prior art keywords
switching device
housing
fuse
neutral conductor
conductors
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
EP20100002732
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German (de)
English (en)
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EP2367192A1 (fr
Inventor
Torsten Wolf
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
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Jean Mueller Elektrotechnische Fabrik GmbH
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Application filed by Jean Mueller Elektrotechnische Fabrik GmbH filed Critical Jean Mueller Elektrotechnische Fabrik GmbH
Priority to EP20100002732 priority Critical patent/EP2367192B1/fr
Publication of EP2367192A1 publication Critical patent/EP2367192A1/fr
Application granted granted Critical
Publication of EP2367192B1 publication Critical patent/EP2367192B1/fr
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Classifications

    • 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

Definitions

  • the invention relates to a switching device for separating three conductors and a neutral conductor.
  • Switching devices which are designed as NH (low-voltage high-performance) fuse switch-disconnector, serve to separate three Current conductors.
  • NH low-voltage high-performance fuse switch-disconnector
  • first and second fuse contacts for receiving three NH fuse-links.
  • a first and a second fuse contact serves to receive a fuse link.
  • the first fuse contacts are connected to rigid conductors that pass through passages in the housing for electrically and mechanically connecting the conductors to the three busbars.
  • the second fuse contacts are connected by means of conductors arranged in the region of an end face of the housing terminals.
  • Such a fuse switch disconnectors in strip design for NH fuse-links which has the features of the switching device according to the preamble of patent claim 1, is in the EP 1 045 414 A1 described.
  • Switching can be in this switching device, the fuse links by swivel mounted in an upper part of the switching device, designed as a lid recordings, the fuse links record over grip plates, which reach by swinging the lid, the fuse links out of contact with the fuse contacts.
  • the switching of the fuse links is not on the single-pole switching according to the EP 1 045 414 A1 limited, but it is also possible a three-pole switching, as it is in the DE 38 12 504 A1 is illustrated, in which the three lids are interconnected by means of a connecting linkage.
  • a special field of application of the present invention is the connection of a self-generation plant with a low-voltage network.
  • a coupling switch with at least load switching capacity is required.
  • This coupling switch must have a allow all-pole galvanic isolation.
  • the use of a switching device is required, which allows safe separation of the neutral conductor in addition to the three outer conductors. In this case, the situation may arise that the busbar relating to the neutral conductor is indeed arranged in the plane of the busbar arrangement of the three current conductors, but in addition to them.
  • Object of the present invention is to provide a switching device for separating three conductors and a neutral conductor, which can be made largely of standardized components that are used for a switching device for switching three conductors of a busbar system use.
  • the switching device according to the invention has a first switching device in strip form for separating the three current conductors and a second switching device in strip form for disconnecting the neutral conductor.
  • first and second fuse contacts for receiving three NH fuse-links, wherein a first and a second fuse contact of a fuse link is used, and the first fuse contacts are connected to rigid conductors
  • the Pass through passages in the housing for electrically and mechanically connecting the conductors to three busbars of the conductor
  • the second fuse contacts are connected by means of conductors arranged in the region of one end face of the housing connections.
  • the switching device in a strip-shaped housing of the second switching device at least one fastening means for mechanically connecting the housing with at least a busbar of the current conductor is mounted, and in the housing are mounted two contacts for receiving an electrically conductive separating element, wherein these two contacts are connected for the separating element by means of conductors arranged in the region of an end face of the housing of the second switching device terminals which connectable to the neutral conductor are.
  • the first switching device thus includes the known function of a switching device in strip design for separating the three conductors, while the second switching device has the special function of separating the neutral conductor. Due to this design or arrangement of the two switching devices, the first switching device can be electrically and mechanically assigned to the three conductors and the second switching device are assigned to the neutral conductor, said second switching device is mechanically connected to at least one busbar of the conductor.
  • both switching devices are designed in strip form and have a strip-shaped housing, in addition current conductors for storing the housing in busbars and also have arranged in the front end sides of the housing connections, the two switching devices can be made largely of standardized components, in particular for a switching device for Switching three current conductors of a busbar system find use.
  • the housing of the first and second switching device are identical. Since the construction of the first switching device in strip design for separating the three current conductors forms the output structure, it is only necessary for the production of the second switching device to use this strip-shaped housing for the first switching device as a housing for the second switching device as a component.
  • the two switching devices in the region of longitudinal sides to each other lie and the two housings are connected together.
  • Two identically designed housings can thus be arranged next to one another and thus form a unit formed from two identical parts.
  • the connection of the two housings for example, by tabs that connect the housing together in the frontal areas, in the region of both ends of the switching device.
  • the connection is advantageous in terms of transport and installation. Basically, this connection would not be necessary because the first switching device is mounted in the three conductors and the second switching device in at least one of these three conductors.
  • the neutral conductor is positioned on one side of the bus bar arrangement of the current conductors, it is considered to be particularly advantageous if the terminals are arranged in the region of the end sides of the two housings on the same side of the switching device.
  • connections in the region of the front side of the first switching device and / or the connections in the region of the front side of the second switching device are preferably designed as screw terminals or connection terminals.
  • the formation of the terminals as screw terminals or terminals allows a particularly simple connection of the conductors to this.
  • a development of the invention provides that a first attachment means for mechanically connecting the housing of the second switching device to a first busbar of the current conductor and a second attachment means for mechanically connecting the housing of the second switching device to a second busbar of the current conductor is provided. Although this produces a conductive connection with the first and second busbars of the current conductors.
  • the first and the second fastening means are arranged in the region of opposite ends of the housing for connecting the housing to the two outer busbars of the current conductors.
  • the respective fastening means is formed by a fuse contact received from the housing of the second switching device and a rigid conductor connected thereto, wherein the rigid conductor can be connected to a facing busbar of the current conductor.
  • the same rigid conductor can be used, which is required for mechanically and electrically connecting the fuse contact of the first switching device with the respective busbar of the conductor.
  • the same rigid conductors can be used as in the first switching device with respect to the attachment of the housing of the second switching device to one busbar or two busbars of the conductor. This also contributes to the standardization of the switching device according to the invention.
  • the storage of the separating element in the two contacts associated therewith should also take place under the aspect of the standardization of the switching device.
  • the respective contact for the separating element is a safety contact mounted in the housing, with respect to its geometry and / or its mounting that of the fuse contacts of the first Corresponds to switching device.
  • the separating element is in particular a separating knife.
  • the switching device is arranged with respect to the busbar system and the neutral busbar so that each switching device or housing covers the three busbars of the current conductors and does not cover the busbar for the neutral conductor.
  • a concrete application of the switching device provides that the end-side connections are arranged on the side facing the neutral side of the housing and the three end-side terminals of the conductor and a frontal connection of the neutral conductor with a four-pole line to the low voltage network can be connected, and the other terminal of the neutral conductor can be connected to the busbar for the neutral conductor.
  • the connection for the busbar of the neutral conductor can be connected to a connection lug which can be connected to the busbar of the neutral conductor.
  • the first switching device is preferably a fuse load switching strip.
  • the actuation of the two switching devices is preferably carried out such that the three fuse links and the separating element by means of a common switching means from the respective on position to the respective separate position and vice versa are switchable, in particular can be switched substantially simultaneously.
  • the neutral pole is preferably leading when switched on.
  • a switching device 1 is used when transferring in the open position separating and corresponding to the transfer in the closed position connecting three power conductors 2, 3, 4 and a neutral conductor 5 of a corresponding, formed from mutually parallel busbars busbar system 6, which represents the input side of the switching device , with conductors 7, 8 and 9 and a neutral conductor 10, which represent cable connections of the switching device 1 and represent the connection to a low-voltage network.
  • the three current conductors with L1, L2 and L3 and the neutral conductor with N are designated.
  • FIG. 1 shown arrangement is arranged in particular in a distribution cabinet, a self-generating system.
  • a switching device with at least load switching capacity is prescribed for the connection of the own generating plant, which is designed for example as a photovoltaic system, to the low-voltage network.
  • This switching device must allow all-pole galvanic isolation. From this aspect, the inventive Switching device, a separation of the three current conductors L1, L2, L3 (- outer conductor -) and the safe separation of the neutral N.
  • the switching device 1 is essentially formed of standardized components, which are based on the design of a fuse load switching strip, which is used to switch the conductors L1, L2 and L3.
  • the switching device 1 has a first switching device 11 in strip design for separating the three current conductors L1, L2, L3 and a second switching device 12 in strip form for separating the neutral conductor N.
  • first fuse contacts 14 and second fuse contacts 15 are mounted in a strip-shaped housing 13 of the first switching device 11 .
  • Each pair of fuse contacts 14, 15 serves to receive an illustrated NH fuse-link 32, whereby the first switching device 11 is used to accommodate three NH fuse-links 32.
  • the housing 13 has six receptacles 16, which are arranged behind one another in the longitudinal direction of the housing 13 in this. With each receptacle 16, a fuse contact 14 or 15 is connected, wherein the fuse contacts 14 and 15 are arranged alternately. Fasteners, specifically not shown screws enforce holes in the fuse contacts 14, further holes in two oppositely angled flat rails 17. By means of screws, the fuse contacts 14 and their associated flat bars 17 are screwed to these three fuse contacts 14 associated three receptacles 16. The other end of the respective flat rail 17 is provided with a hole 18 which passes through a further fastening means, in particular a screw, which serves to connect this flat rail 17 to a busbar 2, 3 and 4, respectively.
  • busbars 2 to 4 run, based on the orientation of the switching device 1, below this.
  • the orientation of the bus bars 2 to 5 is horizontal and the housing 13, with respect to its longitudinal extent, arranged vertically, wherein the neutral conductor 10 is arranged below is.
  • the respective flat rail 17 passes through a passage 19 of the housing 13, wherein this passage in each case a pair of receptacles, formed by two receptacles 16, is assigned.
  • the attachment of the fuse contacts 15 takes place with the remaining three receptacles 16 associated therewith.
  • fasteners in particular screws, penetrate holes in these fuse contacts 15 and holes in these associated flat rails 20 and are in the remaining shots 16 screwed.
  • the flat rails 20 are, under the aspect of different spacing of the fuse contacts 15 to the neutral conductor 5 facing the end of the housing 13, designed to have different lengths.
  • the longest flat rail 20 is angled in the region of one side of the housing 13 and from there to the neutral conductor 5 facing the end of the housing 13 and connected there with a screw 21.
  • the other flat rail 20 is slightly shorter and angled to the other side of the housing 13 and from there also to the said end of the housing 13 and connected there with a screw 22.
  • the further, shortest flat rail 20 is designed angled twice, corresponding to the flat rail 17 and connected in the region of said end of the housing 13 with a screw 23.
  • the two laterally arranged flat rails 20 are aligned over their long sections parallel to the associated side wall of the housing 13 and designed in the region of the screw terminals 21 and 22 facing ends rotated by 90 °.
  • the screw terminal 21 connects the current conductor 7 (L1) with the longest flat rail, the screw terminal 22 the current conductor 8 (L2) with the flat rail 20 medium length and the screw 23 the current conductor 9 (L3) with the shortest flat rail 20th
  • the first switching device 11 is mechanically and electrically connected to the current conductors 2, 3 and 4 of the busbar system and the current conductors 7, 8 and 9 are connected in the form of cables to the screw terminals 21, 22 and 23.
  • a cover unit 24 is connected in a latching manner, in which three receptacles 25 are pivotable about axes arranged parallel to the neutral conductor 5.
  • the respective receptacle 25 receives in the region of its underside a fuse link 32, the contact blade in engagement with the respective fuse contact pair, which is formed from the fuse contacts 14 and 15, can be brought.
  • the three receptacles 25 are coupled by means of a lever having a pivoting device 26, thus simultaneously pivotable in one or the other direction, with the consequence of simultaneous disconnection of the mounted in the receptacles 25 fuse links 32 with the associated fuse contacts 14, 15 or Closing the connection between fuse contacts 14, 15 and fuse links 32.
  • the second switching device 12 is arranged.
  • This second switching device 12 agrees with respect to the strip-shaped housing 13 and thus the receptacles 16, also the cover unit 24 with the receptacles 25 with the first switching device 11, so far as the same reference numerals have been used as for the first switching device 11 for these parts.
  • the second switching device 12 only the central receptacle 25 serves to receive a disconnecting blade 33, while the other two receptacles 25 of the second switching device 12 do not have an electrical bridging part, thus receiving neither a fuse link nor a disconnecting blade.
  • Attached is the strip-shaped housing 13 of the second switching device 12 by means of two flat rails 17a and 17b, which - are connected without securing contact 14 - directly via fastening means, in particular screws with the associated receptacles 16, which pass through these receptacles adjacent passages 19 of the housing 13 and with the Power conductors 2 and 4 are connected, as described with respect to the flat rails 17 of the first switching device 11.
  • the flat rails 17a, 17b of the second switching device 12 are thus under power, but are electrically without function and also protected against contact due to the arrangement of covers 34th
  • the receptacles 16 associated with the central passage 19 of the housing 13 of the first switching device 11 are used to attach two fuse contacts 14 and 15, corresponding to the mounting of the fuse contacts 14 and 15, which are assigned to the central passage 19 in the first switching device 11.
  • the fuse contact 15 of the second switching device 12 via a corresponding flat rail 20, which is designed in accordance with the flat rail 20 medium length of the first switching device 11, connected to a screw 28, which corresponds to the screw 22 of the first switching device 11.
  • a flat rail 20 connected to the other fuse contact 14 of the second switching device 12 basically corresponds to the flat rail 20, which represents the longest flat rail of the first switching device 11, this flat rail, however, being severed and the two flat rail sections 29 arranged overlapping and firmly connected, in particular riveted ,
  • This shortened design of the long flat rail 20 of the second switching device 12 arises against the background that this flat rail is to be connected to the further to the neutral conductor 5 facing fuse contact 14 and not with the farther remote fuse contact 15 according to the first switching device 11.
  • the flat rail 20, which is the two flat rail sections 29, is provided in the region of the fuse contact 14 facing away from the end with a screw 30.
  • the reference numeral 34 dome-shaped covers for the fuse contacts 14 and 15 and the other current-carrying parts of the switching device 1 are designated.

Landscapes

  • Fuses (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (15)

  1. Dispositif de commutation (1) pour le sectionnement de trois conducteurs de courant (L1, L2, L3), avec un premier appareil de commutation (11) à construction sous forme de barrettes pour sectionner les trois conducteurs de courant (L1, L2, L3), dans un boîtier (13) en forme de barrette du premier appareil de commutation (11) étant logés des premiers et deuxièmes contacts de fusibles (14, 15) pour la réception de trois cartouches fusibles à haut pouvoir de coupure (32), respectivement un premier et un deuxième contact de fusible (14, 15) servant à la réception d'une cartouche fusible (32), et les premiers contacts de fusibles (14) étant reliés avec des conducteurs rigides (17), lesquels traversent des passages (19) dans le boîtier (13), pour la liaison électrique et mécanique des conducteurs (17) à trois barres omnibus (2, 3, 4) des conducteurs de courant (L1, L2, L3) et les deuxièmes contacts de fusibles (15) étant reliés à l'aide de conducteurs (20) à des raccords (21, 22, 23) disposés dans la zone d'un côté frontal du boîtier (13), caractérisé en ce que le dispositif de commutation (1) présente un deuxième appareil de commutation (12) à construction sous forme de barrettes pour sectionner un conducteur neutre (N), au moins un moyen de fixation (17a, 17b) pour relier mécaniquement le boîtier (13) avec au moins une barre omnibus (2, 4) des conducteurs électriques étant logé dans un boîtier en forme de barrette (13) du deuxième appareil de commutation (12), ainsi que deux contacts (14, 15) étant logés dans le boîtier (13) pour la réception d'un élément de sectionnement électro-conducteur (33), ces deux contacts (14, 15) pour l'élément de sectionnement (33) étant reliés à l'aide de conducteurs (20) à des raccords (28, 30) disposés dans la zone d'un côté frontal du boîtier (13) du deuxième appareil de commutation (12), lesquels peuvent être reliés au conducteur neutre (N).
  2. Dispositif selon la revendication 1, dans lequel les boîtiers (13, 13) du premier et du deuxième appareil de commutation (11, 12) sont identiques.
  3. Dispositif selon les revendications 1 ou 2, dans lequel les boîtiers (13, 13) des deux appareils de commutation (11, 12) reposent l'un contre l'autre dans la zone de côtés longitudinaux et les deux boîtiers (13, 13) sont reliés ensemble.
  4. Dispositif selon l'une des revendications 1 à 3, dans lequel les raccords (21, 22, 23, 28, 30) dans la zone des côtés frontaux des deux boîtiers (13, 13) sont disposés sur le même côté du dispositif de commutation (1).
  5. Dispositif selon l'une des revendications 1 à 4, dans lequel les raccords (21, 22, 23) dans la zone du côté frontal du premier appareil de commutation (11) et/ou les raccords (28, 30) dans la zone du côté frontal du deuxième appareil de commutation (12) sont réalisés en tant que raccords filetés ou bornes de connexion.
  6. Dispositif selon l'une des revendications 1 à 5, dans lequel on prévoit un premier moyen de fixation (17a) pour relier mécaniquement le boîtier (13) du deuxième appareil de commutation (12) à une première barre omnibus (2) des conducteurs de courant, et un deuxième moyen de fixation (17b) pour relier mécaniquement le boîtier (13) du deuxième appareil de commutation (12) à une deuxième barre omnibus (4) des conducteurs de courant.
  7. Dispositif selon la revendication 6, dans lequel les premier et deuxième moyens de fixation (17a, 17b) sont disposés dans la zone d'extrémités opposées du boîtier (13), pour relier le boîtier (13) aux deux barres omnibus (2, 4) extérieures des conducteurs de courant.
  8. Dispositif selon l'une des revendications 1 à 7, dans lequel le moyen de fixation respectif (17a, 17b) est formé par le conducteur rigide (17), lequel sert, pour le premier appareil de commutation (11), à relier mécaniquement et électriquement le premier contact de fusible (14) et la barre omnibus.
  9. Dispositif selon l'une des revendications 1 à 8, dans lequel le contact (14, 15) respectif pour l'élément de sectionnement (33) est un contact de fusible (14, 15) logé dans le boîtier (13) du deuxième appareil de commutation (12), lequel correspond, de par la géométrie et/ou le logement de celui-ci, à ceux des contacts de fusibles (14, 15) du premier appareil de commutation (11).
  10. Dispositif selon l'une des revendications 1 à 9, dans lequel l'élément de sectionnement (33) est un couteau de sectionnement.
  11. Dispositif selon l'une des revendications 1 à 10, dans lequel chaque appareil de commutation (11 ou 12) ou chaque boîtier (13 ou 13) recouvre les trois barres omnibus (2, 3, 4) des conducteurs de courant (L1, L2, L3) et ne recouvre pas la barre omnibus (5) pour le conducteur neutre (N).
  12. Dispositif selon l'une des revendications 1 à 11, dans lequel les raccords (21, 22, 23, 28, 30) côté frontal sont disposés sur le côté orienté vers le conducteur neutre (N) du boîtier (13, 13) et les trois raccords (21, 22, 23) côté frontal des conducteurs de courant et un raccord (30) côté frontal du conducteur neutre peuvent être reliés avec une ligne quadripolaire (7, 8, 9, 10) au réseau de basse tension, et l'autre raccord (28) du conducteur neutre peuvent être relié à la barre omnibus (5) pour le conducteur neutre (N).
  13. Dispositif selon la revendication 12, dans lequel le raccord (28) pour la barre omnibus (5) du conducteur neutre (N) peut être relié à une barrette de raccordement (31), laquelle peut être reliée à la barre omnibus (5) du conducteur neutre (N).
  14. Dispositif selon l'une des revendications 1 à 13, dans lequel les trois cartouches fusibles (32) et l'élément de sectionnement (33) peuvent être commutés, à l'aide d'un moyen de commutation (25, 26, 27) commun, de la position respective de mise en circuit à la position respective de coupure et vice versa, et sont en particulier commutables sensiblement simultanément.
  15. Dispositif selon l'une des revendications 1 à 14, dans lequel le premier appareil de commutation (11) est une barrette de commutation en charge à fusibles.
EP20100002732 2010-03-16 2010-03-16 Dispositif de commutation destiné à la séparation de trois conducteurs électriques et d'un conducteur neutre Active EP2367192B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20100002732 EP2367192B1 (fr) 2010-03-16 2010-03-16 Dispositif de commutation destiné à la séparation de trois conducteurs électriques et d'un conducteur neutre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100002732 EP2367192B1 (fr) 2010-03-16 2010-03-16 Dispositif de commutation destiné à la séparation de trois conducteurs électriques et d'un conducteur neutre

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EP2367192A1 EP2367192A1 (fr) 2011-09-21
EP2367192B1 true EP2367192B1 (fr) 2014-05-14

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2913835B3 (fr) 2014-02-26 2021-05-19 Wöhner Besitz GmbH Réglette de sectionnement pour fusibles basse tension grande puissance
ES2703917T3 (es) * 2014-08-01 2019-03-13 Woehner Gmbh & Co Kg Elektrotechnische Systeme Carril de alimentación
DE202014103583U1 (de) 2014-08-01 2014-08-19 Mersen France Sb Sas 4-polige Schaltleiste

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB450537A (en) * 1934-12-18 1936-07-20 Henleys Telegraph Works Co Ltd Improvements relating to electric switches and switch fuses
DE7326603U (de) * 1973-07-19 1974-01-03 Uma Mayer & Ussfeller Gmbh Mehrlaeufige schreckschuss- und signalpistole
DE3812504A1 (de) 1988-04-15 1989-10-26 Mueller Jean Ohg Elektrotech Nh-sicherungslastschaltleiste
DE19700514C2 (de) * 1997-01-09 2000-03-09 Woehner Gmbh & Co Kg Steckbares Sicherungsunterteil
FR2786925B1 (fr) * 1998-12-04 2001-01-12 Cahors App Elec Attelage d'extraction de coupe-circuit electrique tel que fusible, dispositif de montage, et installation electrique, telle que destinee a l'alimentation d'un immeuble collectif
DE19917403A1 (de) 1999-04-16 2000-10-19 Mueller Jean Ohg Elektrotech Sicherungslasttrennschalter in Leistenbauform für NH-Sicherungen

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