EP2255369B1 - Modular terminal, particularly disconnect terminal - Google Patents

Modular terminal, particularly disconnect terminal Download PDF

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Publication number
EP2255369B1
EP2255369B1 EP09720012.5A EP09720012A EP2255369B1 EP 2255369 B1 EP2255369 B1 EP 2255369B1 EP 09720012 A EP09720012 A EP 09720012A EP 2255369 B1 EP2255369 B1 EP 2255369B1
Authority
EP
European Patent Office
Prior art keywords
terminal
housing
busbar
isolating blade
insulating housing
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
EP09720012.5A
Other languages
German (de)
French (fr)
Other versions
EP2255369A1 (en
Inventor
Carsten Pollmann
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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Publication date
Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP2255369A1 publication Critical patent/EP2255369A1/en
Application granted granted Critical
Publication of EP2255369B1 publication Critical patent/EP2255369B1/en
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
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/365—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2625—Clip-on terminal blocks for side-by-side rail- or strip-mounting with built-in electrical component
    • H01R9/2633—Clip-on terminal blocks for side-by-side rail- or strip-mounting with built-in electrical component with built-in switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/48275—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end with an opening in the housing for insertion of a release tool

Definitions

  • the invention relates to a terminal block, in particular a disconnect terminal, with a terminal housing, with a two-piece busbar, with two conductor connection elements for connecting one conductor to a portion of the busbar and with a pivotally mounted in the terminal housing separating knife, wherein the two sections are connected to each other in a first position of the separating blade and separated from each other in a second position of the separating blade, and wherein the conductor connection elements remote from the ends of the sections of the busbar are bent such that in the first position of the separating blade, the end of the first section of the busbar, the cutting blade at an upper contact portion and the end of the second portion of the bus bar contacts the disconnecting blade at a lower contact area.
  • the invention also relates to a circuit breaker with a disconnecting blade for pivotal arrangement in a terminal housing a terminal.
  • Electrical terminal blocks have been known for decades and are used millions of times in the wiring of electrical systems and equipment.
  • the terminals are usually snapped onto mounting rails, which in turn are often arranged in a plurality in a control cabinet.
  • conductor connection elements predominantly screw terminals or tension spring terminals are used in terminal blocks.
  • cutting terminals or leg spring terminals can be used.
  • the basic type of terminal block is the connection terminal, which has at least two conductor connection elements, which are electrically connected to one another via an electrically conductive connection rail, the busbar.
  • this basic type which is often referred to as a feed-through terminal
  • protective conductor terminals, knife disconnect terminals and installation terminals may be mentioned here.
  • terminal blocks which are used in power converter measuring circuits of power generation and distribution, are often different Switching, separating and testing tasks to realize. According to their use, such terminal blocks are often referred to as transducer disconnect terminals. With the help of a arranged in the terminal housing of the disconnect terminal circuit breaker while the two sections of the busbar can either be connected to each other or separated.
  • An electrical terminal block in which two parts of a busbar can be separated via a separation point is from the DE 41 06 555 A1 known.
  • a double-level terminal which has two busbars running one above the other in the terminal housing, wherein both busbars can be separated by a separation point accessible from the top of the terminal block.
  • the separation point is designed as a knife-separating point, which has a pivotally mounted in the housing separating knife.
  • a current transformer disconnect terminal in which the separation point is formed by a rotatably arranged in the terminal housing contact disc.
  • the separation point By forming the separation point as a contact disk, it is possible either to connect the two sections of the busbar with each other or to separate from each other. If the two sections of the busbar are separated from each other, then the converter-side section of the busbar is electrically conductively connected via the contact disk to an additionally arranged in the terminal housing contact piece, in which contact piece, a shorting bridge can be inserted. Due to the formation of the separation point as a contact disk, this separation clamp has relatively large dimensions. In addition, the operating angle for securely pivoting the contact disc from the first position to the second position is relatively large.
  • a knife switch for the electrical connection of conductors connected to two terminals.
  • the two terminals are connected by a separating knife, the separating knife consists of two straight rails.
  • the cutting knife is rotatably mounted around a rod with the axis of rotation in the rod. The rotation
  • the separating knife is made by a lever that can be connected to the separating knife.
  • a disconnect terminal described above in which the separation point is formed by a pivotally mounted in the terminal housing separating blade.
  • the cutting knife is mounted with its lower end in a receptacle in the terminal housing, so that the cutting blade can be pivoted about this bearing point. While the separating knife contacted in the first position of both sections of the busbar is, contacted the cutting blade in the second position, only one of the two sections, so that the busbar is disconnected. To ensure a sufficiently large separation distance between the separating knife and the end of the second connecting piece facing away from the conductor connecting element, a relatively large operating angle is also required in the case of this separating clamp.
  • the present invention is therefore an object of the invention to provide a terminal described above, in which the switching of the circuit breaker space-saving as possible but still user-friendly and safe possible.
  • the invention has for its object to provide a suitable longitudinal disconnect switch with a separating knife for pivotal arrangement in a terminal housing a terminal.
  • the required operating angle and thus the space required for the cutting blade within the terminal block can be further reduced in that the cutting blade according to the invention is angled such that the arranged below the pivot axis of the cutting blade is bent away from the end of the second section of the busbar. Due to the geometry of the separating blade thereby the separation distance between the lower contact region and the end of the second portion of the busbar is increased, so that a smaller operating angle is required to ensure a certain total separation distance between the two sections of the busbar.
  • the separating knife is partially encapsulated by an insulating housing, wherein at least the upper contact area and the lower contact area are not surrounded by the insulating housing and thus can be contacted by the preferably designed as contact forks ends of the two sections in the first position of the separating knife ,
  • the longitudinal disconnector thus consists of the separating blade and the insulating housing. Due to the fact that the separating knife is partially encapsulated by the insulating housing, both the operation and the assembly of the longitudinal circuit breaker can be simplified.
  • the cutting blade with the insulating housing in the terminal housing can be inserted and defined there latched.
  • the terminal block according to the invention can thus also as a kit consisting of the terminal housing with the arranged therein, of two sections existing busbar and the conductor connection elements on the one hand and the longitudinal circuit breaker on the other hand are sold, in which case the longitudinal circuit breaker is not engaged in the assembly of the terminal block in the terminal housing.
  • a pivot is formed, which engages in the mounted state of the longitudinal disconnector in an opening in a side wall of the terminal housing.
  • the leadership of the insulating housing in the terminal housing can be further improved in that the insulating housing is dimensioned, in particular has a width such that it is additionally guided during pivoting from the first position to the second position by the side walls of the terminal housing.
  • a slight interference fit is preferably realized, which reliably prevents tilting of the insulating housing and thus also of the separating blade during pivoting. Since the side walls of the terminal housing have only a relatively small wall thickness, the side walls are sufficiently yielding, so that a deliberate pivoting of the longitudinal circuit breaker from the first position to the second position is not hindered by the interference fit.
  • one or both side walls of the terminal housing have a guide groove and that on at least one side surface of the insulating housing, a guide pin or a guide web is formed, wherein the guide groove or the guide grooves are arranged so that the separating knife is automatically arranged in the second position after insertion of the insulating housing in the terminal housing.
  • the formation of the guide grooves and the corresponding guide pins or guide webs thus ensures that the longitudinal circuit breaker can be inserted only in a certain orientation in the terminal housing.
  • a guide pin which cooperates with a guide groove in a side wall of the terminal housing, can advantageously serve the molded on the insulating pivot.
  • the insulating housing of the circuit breaker on at least one side surface has a locking pin and that in the corresponding side wall of the terminal housing two recesses corresponding to the locking pin are formed, in which the locking pin in the first position or in the locked second position of the cutting knife.
  • the locking pin and the recesses are advantageously designed so that both in the first position and in the second position of the separating knife a positive locking takes place, wherein the engagement of the locking pin in the recess by an acoustic click is clearly noticeable.
  • an open-topped actuating shaft is formed in the insulating housing, in which a tool, in particular the tip of a screwdriver, can be inserted.
  • a tool in particular the tip of a screwdriver
  • the cutting blade can be easily pivoted from one, latched position to the other, also latched position.
  • the actuating shaft is preferably dimensioned so that the pivoting of the longitudinal circuit breaker, a screwdriver can be used with which also operates the conductor connection elements, i. can be opened or closed.
  • the actuating shaft preferably extends laterally offset to the above the pivot axis arranged region of the cutting blade. As a result, the actuating shaft can have a large depth, whereby the tip of a screwdriver is guided safely without the insulating housing must protrude substantially beyond the upper end of the cutting blade.
  • the formation of the actuating shaft in the insulating housing also creates the possibility to operate at several juxtaposed terminal blocks whose circuit breaker at the same time, in which a switch connection is used which has at least two legs and a leg connecting the handle portion.
  • the individual legs of the switch connection are designed so that they can each be inserted into an operating shaft and preferably also lock. As a result, several longitudinal disconnectors of several terminal blocks can be switched simultaneously with a single movement.
  • a shift lock is provided, which can be plugged into the terminal housing and locked therein to block the cutting blade in one and / or the other position.
  • the shift lock is preferably designed so that it only needs to be rotated by 180 ° in order to be able to be plugged into the terminal housing in one or the other positions of the cutting blade.
  • the switching lock has a plugged in the insulating housing facing the open end, so that even when plugged lockout on a front side of the plastic housing printed symbol for indicating the position of the cutting blade from above by the shift lock is visible.
  • the object with the features of claim 13 is achieved in that the pivot axis of the separating knife between the upper contact region and the lower contact region is arranged and that in a second position of the separating knife both the upper contact region of the separating knife from the end of first portion of the busbar and the lower contact portion of the separating blade is spaced from the end of the second portion of the bus bar.
  • Fig. 1 shows a terminal block 1 according to the invention in the form of a disconnect terminal, which can be used in particular as a measuring transducer isolating terminal in current transformer measuring circuits of power generation and distribution.
  • the terminal block 1 has a generally made of plastic terminal housing 2, in which a two sections 3, 4 existing busbar and two conductor connection elements 5, 6 are arranged.
  • the conductor connection elements 5, 6 are formed in the illustrated embodiment as leg spring terminals, in each of which a conductor to be connected can be inserted through a formed in the terminal housing 2 conductor insertion opening 7.
  • the conductor connection elements 5, 6 may also be designed as screw terminals, as tension spring terminals or as cutting terminals. With the help of the conductor connection elements 5, 6 can each one electrical conductor to a section 3, 4 of the busbar are connected.
  • the conductor connecting elements 5, 6 opposite ends 9, 10 of the sections 3, 4 are bent such that the end 9 of the section 3 is in a plane above the end 10 of the section 4.
  • the end 9 of the section 3 is thus bent upward and the end 10 of the section 4 is bent downwards.
  • the first position of the separating knife 8 the end 9 of the first portion 3 of the busbar the separating blade 8 at an upper contact portion 11 and the end 10 of the second portion 4, the separating knife 8 contacted at a lower contact portion 12.
  • the ends 9, 10 of the two sections 3, 4 of the busbar are each formed as contact forks 13, between which the respective contact region 11, 12 of the separating blade 8 is inserted in the first position, wherein the contact forks 13 and the separating knife 8 dimensioned are that a safe and good electrical contact is guaranteed.
  • the contact fork 13 are bent or arranged to the cutting blade 8, that the contact fork 13 impinge almost perpendicular to the two contact region 11, 12 of the cutting blade 8.
  • the longitudinal disconnect switch is pivotally mounted in the terminal housing 2 of the disconnect terminal 1.
  • the - in Fig. 4 separately shown - longitudinal disconnector has in addition to the separating knife 8 still an insulating housing 14 which is formed so that at least the upper contact portion 11 and the lower contact portion 12 of the separating blade 8 are not surrounded by the insulating housing 14.
  • the connection of separating knife 8 and insulating housing 14 is thereby ensured that the separating knife 8 is encapsulated by the insulating housing 14.
  • a pivot pin 15 is integrally formed on a side surface of the insulating housing 14, which is mounted in a corresponding opening 18 in a side wall 16 of the terminal housing 2.
  • pivot 15 of the circuit breaker or the insulating housing 14 is also guided by the two side walls 16, 17 of the terminal housing.
  • the width of the insulating housing 14 is selected so that it fits tightly in the inserted into the terminal housing 2 state on both side walls 16, 17 of the terminal housing 2.
  • the pivot axis of the separating knife 8, that is, the pivot pin 15, between the upper contact portion 11 and the lower contact portion 12 is arranged.
  • the second position of the separating knife 8 - as in particular from the Fig. 3 and 7 it can be seen - both the end 9 of the first portion 3 of the busbar from the upper contact portion 11 and the end 10 of the second portion 4 of the busbar from the lower contact portion 12 of the separating blade 8 spaced.
  • the two separation lines add up between the end 9 of the first part 3 and the upper contact region 11 on the one hand and the end 10 of the second part 4 and the lower contact region 12 on the other hand to a total separation distance, which ensures a secure separation of the two sections 3, 4 of the busbar.
  • the cutting blade 8 is still angled so that the below the pivot axis, ie, below the pivot 5, arranged portion of the cutting blade 8 is bent away from the end 10 of the second section 4, as well as from Fig. 3 and 7 is recognizable.
  • a total of an operating angle of only about 30 ° sufficient, so that on the one hand, the middle portion of the terminal 1 - and thus the terminal 1 total -small dimensions, on the other hand, the operation of the circuit breaker very easy and comfortable even in confined spaces is possible.
  • a locking pin 19, formed by the separating knife 8 and the longitudinal disconnector both in the first position and in the second position in the terminal housing. 2 is latched.
  • two recesses 20 are formed in which the latching pin 19 facing side wall 16 of the terminal housing 2, in which the latching pin 19 is positively locked in the first position or in the second position of the cutting blade 8.
  • the positive locking of the locking pin 19 in the two recesses 20 leads, together with the narrow guide of the insulating housing 14 between the two side walls 16, 17 of the terminal housing 2 to the fact that for the fitter the locking both in the first position and in the second position clearly noticeable by an acoustic click.
  • the assembly of in Fig. 4 separately shown longitudinal circuit breaker in the terminal housing 2 of the terminal 1 can be done simply by the fact that the circuit breaker is inserted into the terminal housing 2 and locked therein.
  • a guide groove 21 is formed in the two side walls 16, 17 of the terminal housing 2, in which when inserting the circuit breaker in the terminal housing 2 on the one of the pivot pin 14 and to another on the opposite side surface of the insulating housing 14 trained corresponding guide pin engages.
  • This ensures that the circuit breaker can only be plugged into the terminal housing 2 so that the cutting blade 8 is in the locked state of the insulating housing 14 in the terminal housing 2, first in the second, open position.
  • the locking of the insulating housing 14 in the terminal housing 2 takes place in that the pivot pin 15 engages in the opening 18 in the side wall 16 of the terminal housing 2, which is visually and acoustically perceptible by a corresponding click.
  • an upwardly open actuating shaft 22 is formed, in which a tool, in particular the tip of a screwdriver 23, can be inserted.
  • the actuating shaft 22 is dimensioned so that in him the tip of a screwdriver 23 can be inserted, with which also the conductor connection elements 5, 6 can be operated.
  • only a simple screwdriver is needed to connect the conductors and to operate the circuit breaker.
  • a symbol 26 is printed, which indicates the respective position of the separating blade 8 in the terminal block 1.
  • the longitudinal circuit breaker is in the first, closed position, is printed on the visible in this position end face 24 of the insulating housing 14, the symbol 26 of a closed switch.
  • the symbol of an open switch is printed on the opposite end face 25.
  • the 6 and 7 show an embodiment of a terminal block 1, in which a shift lock 27 for blocking the circuit breaker 8 in the first position ( Fig. 6 ) or in the second position ( Fig. 7 ) is inserted into the terminal housing 2 and locked therein.
  • the shift lock 27 is designed so that after locking into the terminal housing 2 only with a tool, for example, with a pair of needle nose pliers from the terminal housing 2 can be removed, so that an accidental operation of the circuit breaker is reliably prevented.
  • the same shift lock 27 can be used both in the first position of the circuit breaker as well as in the second position of the circuit breaker in the terminal housing 2, to which the shift lock 27 must be rotated only by 180 °.
  • the shift lock 27 on one side of a locking pin 28 which engages depending on the arrangement of the shift lock 27 in an opening 29 in one side wall 16 or the other side wall 17 of the terminal housing 2.
  • the operation of the circuit breaker can be done not only by means of a screwdriver 23, but also by means of a switch connection 30, which in the in Fig. 8 illustrated embodiment, two legs 31 and a leg 31 connecting handle portion 32 has.
  • a switch connection 30 thus two longitudinal circuit breaker two juxtaposed terminal blocks 1 can be operated simultaneously, for which purpose a leg 31 is inserted into the operating shaft 22 of a longitudinal circuit breaker.
  • the terminal blocks 1 shown there have a plurality of guide shafts 33 on both sides of the longitudinal circuit breaker, in which either the contact pins of a test plug, a test socket, a jumper or a jumper can be inserted.
  • the contact pins of a test plug, a test socket, a jumper or a jumper can be inserted.
  • three openings 34 are formed in the two sections 3, 4 of the busbar ( Fig. 5 ).

Description

Die Erfindung betrifft eine Reihenklemme, insbesondere eine Trennklemme, mit einem Klemmengehäuse, mit einer aus zwei Teilstücken bestehenden Stromschiene, mit zwei Leiteranschlußelementen zum Anschließen von je einem Leiter an ein Teilstück der Stromschiene und mit einem schwenkbar in dem Klemmengehäuse gelagerten Trennmesser, wobei die beiden Teilstücke in einer ersten Stellung des Trennmessers miteinander verbunden und in einer zweiten Stellung des Trennmessers voneinander getrennt sind, und wobei die den Leiteranschlußelementen abgewandten Enden der Teilstücke der Stromschiene derart abgebogen sind, daß in der ersten Stellung des Trennmessers das Ende des ersten Teilstücks der Stromschiene das Trennmesser an einem oberen Kontaktbereich und das Ende des zweiten Teilstücks der Stromschiene das Trennmesser an einem unteren Kontaktbereich kontaktiert. Daneben betrifft die Erfindung noch ein Längstrennschalter mit einem Trennmesser zur schwenkbaren Anordnung in einem Klemmengehäuse einer Reihenklemme.The invention relates to a terminal block, in particular a disconnect terminal, with a terminal housing, with a two-piece busbar, with two conductor connection elements for connecting one conductor to a portion of the busbar and with a pivotally mounted in the terminal housing separating knife, wherein the two sections are connected to each other in a first position of the separating blade and separated from each other in a second position of the separating blade, and wherein the conductor connection elements remote from the ends of the sections of the busbar are bent such that in the first position of the separating blade, the end of the first section of the busbar, the cutting blade at an upper contact portion and the end of the second portion of the bus bar contacts the disconnecting blade at a lower contact area. In addition, the invention also relates to a circuit breaker with a disconnecting blade for pivotal arrangement in a terminal housing a terminal.

Elektrische Reihenklemmen sind seit Jahrzehnten bekannt und werden millionenfach bei der Verdrahtung elektrischer Anlagen und Geräte verwendet. Die Klemmen werden meist auf Tragschienen aufgerastet, welche ihrerseits häufig in einer Mehrzahl in einem Schaltschrank angeordnet sind. Als Leiteranschlußelemente werden in Reihenklemmen überwiegend Schraubklemmen oder Zugfederklemmen verwendet. Daneben können aber auch Schneidanschlußklemmen oder Schenkelfederklemmen verwendet werden.Electrical terminal blocks have been known for decades and are used millions of times in the wiring of electrical systems and equipment. The terminals are usually snapped onto mounting rails, which in turn are often arranged in a plurality in a control cabinet. As conductor connection elements predominantly screw terminals or tension spring terminals are used in terminal blocks. In addition, however, cutting terminals or leg spring terminals can be used.

Der Grundtyp der Reihenklemme ist die Verbindungsklemme, die mindestens zwei Leiteranschlußelemente aufweist, die über eine elektrisch leitende Verbindungsschiene, die Stromschiene, elektrisch miteinander verbunden sind. Neben diesem Grundtyp, der häufig auch als Durchgangsklemme bezeichnet wird, gibt es eine Vielzahl von unterschiedlichen Reihenklemmentypen, die speziell an den jeweiligen Anwendungsfall angepaßt sind. Als Beispiel seien hier Schutzleiterklemmen, Messertrennklemmen und Installationsklemmen genannt.The basic type of terminal block is the connection terminal, which has at least two conductor connection elements, which are electrically connected to one another via an electrically conductive connection rail, the busbar. In addition to this basic type, which is often referred to as a feed-through terminal, there are a variety of different types of terminal blocks, which are specially adapted to the particular application. As an example, protective conductor terminals, knife disconnect terminals and installation terminals may be mentioned here.

Insbesondere bei Reihenklemmen, die in Stromwandler-Meßkreisen der Energieerzeugung und -verteilung eingesetzt werden, sind häufig verschiedene Schalt-, Trenn- und Prüfaufgaben zu realisieren. Entsprechend ihrer Verwendung werden derartige Reihenklemmen häufig auch als Meßwandler-Trennklemmen bezeichnet. Mit Hilfe eines im Klemmengehäuse der Trennklemme angeordneten Längstrennschalters können dabei die beiden Teilstücke der Stromschiene wahlweise miteinander verbunden oder voneinander getrennt werden.In particular, in terminal blocks, which are used in power converter measuring circuits of power generation and distribution, are often different Switching, separating and testing tasks to realize. According to their use, such terminal blocks are often referred to as transducer disconnect terminals. With the help of a arranged in the terminal housing of the disconnect terminal circuit breaker while the two sections of the busbar can either be connected to each other or separated.

Eine elektrische Reihenklemme, bei der zwei Teilstücke einer Stromschiene über eine Trennstelle auftrennbar ist, ist aus der DE 41 06 555 A1 bekannt. Bei der dort beschriebenen Reihenklemme handelt es sich um eine Doppelstockklemme, die zwei im Klemmengehäuse übereinander verlaufene Stromschienen aufweist, wobei beide Stromschienen durch eine von der Oberseite der Reihenklemme zugängliche Trennstelle auftrennbar sind. Die Trennstelle ist dabei als Messer-Trennstelle ausgebildet, die ein schwenkbar im Gehäuse gelagertes Trennmesser aufweist.An electrical terminal block in which two parts of a busbar can be separated via a separation point, is from the DE 41 06 555 A1 known. In the terminal block described therein is a double-level terminal, which has two busbars running one above the other in the terminal housing, wherein both busbars can be separated by a separation point accessible from the top of the terminal block. The separation point is designed as a knife-separating point, which has a pivotally mounted in the housing separating knife.

Aus der DE 44 44 551 A1 ist eine Stromwandler-Trennklemme bekannt, bei der die Trennstelle von einer drehbar im Klemmengehäuse angeordneten Kontaktscheibe gebildet wird. Durch die Ausbildung der Trennstelle als Kontaktscheibe besteht die Möglichkeit, die beiden Teilstücke der Stromschiene wahlweise miteinander zu verbinden oder voneinander zu trennen. Sind die beiden Teilstücke der Stromschiene voneinander getrennt, so ist das wandlerseitige Teilstück der Stromschiene über die Kontaktscheibe mit einem zusätzlich im Klemmengehäuse angeordneten Kontaktstück elektrisch leitend verbunden, wobei in dieses Kontaktstück eine Kurzschlußbrücke eingesteckt werden kann. Durch die Ausbildung der Trennstelle als Kontaktscheibe weist diese Trennklemme relativ große Abmessungen auf. Darüber hinaus ist der Betätigungswinkel zum sicheren Verschwenken der Kontaktscheibe aus der ersten Stellung in die zweite Stellung relativ groß.From the DE 44 44 551 A1 a current transformer disconnect terminal is known in which the separation point is formed by a rotatably arranged in the terminal housing contact disc. By forming the separation point as a contact disk, it is possible either to connect the two sections of the busbar with each other or to separate from each other. If the two sections of the busbar are separated from each other, then the converter-side section of the busbar is electrically conductively connected via the contact disk to an additionally arranged in the terminal housing contact piece, in which contact piece, a shorting bridge can be inserted. Due to the formation of the separation point as a contact disk, this separation clamp has relatively large dimensions. In addition, the operating angle for securely pivoting the contact disc from the first position to the second position is relatively large.

Aus der US 2,620,415 ist ein Messerschalter zur elektrischen Verbindung von an zwei Klemmen angeschlossenen Leitern bekannt. Die beiden Klemmen werden durch ein Trennmesser miteinander verbunden, wobei das Trennmesser aus zwei geraden Schienen besteht. Das Trennmesser ist drehbar um eine Stange angeordnet, wobei die Drehsachse in der Stange liegt. Die Drehung des Trennmessers erfolgt durch einen mit dem Trennmesser verbindbaren Hebel.From the US 2,620,415 a knife switch is known for the electrical connection of conductors connected to two terminals. The two terminals are connected by a separating knife, the separating knife consists of two straight rails. The cutting knife is rotatably mounted around a rod with the axis of rotation in the rod. The rotation The separating knife is made by a lever that can be connected to the separating knife.

Aus der Praxis ist eine eingangs beschriebene Trennklemme bekannt, bei der die Trennstelle von einem schwenkbar im Klemmengehäuse gelagerten Trennmesser gebildet wird. Das Trennmesser ist dabei mit seinem unteren Ende in einer Aufnahme im Klemmengehäuse gelagert, so daß das Trennmesser um diesen Lagerpunkt verschwenkt werden kann. Während das Trennmesser in der ersten Stellung von beiden Teilstücken der Stromschiene kontaktiert wird, kontaktiert das Trennmesser in der zweiten Stellung lediglich eine der beiden Teilstücke, so daß die Stromschiene getrennt ist. Zur Gewährleistung einer ausreichend großen Trennstrecke zwischen dem Trennmesser und dem dem Leiteranschlußelement abgewandten Ende des zweiten Teilstücks ist auch bei dieser Trennklemme ein relativ großer Betätigungswinkel erforderlich.From practice a disconnect terminal described above is known, in which the separation point is formed by a pivotally mounted in the terminal housing separating blade. The cutting knife is mounted with its lower end in a receptacle in the terminal housing, so that the cutting blade can be pivoted about this bearing point. While the separating knife contacted in the first position of both sections of the busbar is, contacted the cutting blade in the second position, only one of the two sections, so that the busbar is disconnected. To ensure a sufficiently large separation distance between the separating knife and the end of the second connecting piece facing away from the conductor connecting element, a relatively large operating angle is also required in the case of this separating clamp.

Darüber hinaus werden in der Praxis häufig Trennschieber als Längstrennschalter verwendet, die axial verschiebbar im Klemmengehäuse angeordnet sind und in der ersten Stellung die beiden Teilstücke der miteinander verbinden. Mit Hilfe einer Schraube wird der Längstrennschalter in seiner jeweiligen Stellung fixiert.In addition, in practice, often slide as a longitudinal disconnector switch are used, which are arranged axially displaceable in the terminal housing and in the first position, the two sections of the interconnect. With the help of a screw, the circuit breaker is fixed in its respective position.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine eingangs beschriebene Reihenklemme zur Verfügung zu stellen, bei der das Schalten des Längstrennschalters möglichst platzsparend aber dennoch benutzerfreundlich und sicher möglich ist. Daneben liegt der Erfindung die Aufgabe zugrunde, einen dafür geeigneten Längstrennschalter mit einem Trennmesser zur schwenkbaren Anordnung in einem Klemmengehäuse einer Reihenklemme anzugeben.The present invention is therefore an object of the invention to provide a terminal described above, in which the switching of the circuit breaker space-saving as possible but still user-friendly and safe possible. In addition, the invention has for its object to provide a suitable longitudinal disconnect switch with a separating knife for pivotal arrangement in a terminal housing a terminal.

Diese Aufgabe ist bei der eingangs beschriebenen Reihenklemme dadurch gelöst, daß die Schwenkachse des Trennmessers zwischen dem oberen Kontaktbereich und dem unteren Kontaktbereich angeordnet ist, daß in der zweiten Stellung des Trennmessers sowohl das Ende des ersten Teilstücks der Stromschiene vom oberen Kontaktbereich des Trennmessers als auch das Ende des zweiten Teilstücks der Stromschiene vom unteren Kontaktbereich des Trennmessers beabstandet ist, und daß das Trennmesser derart abgewinkelt ist, daß der unterhalb der Schwenkachse angeordnete Bereich des Trennmessers vom Ende des zweiten Teilstücks der Stromschiene weggebogen ist.This object is achieved in the terminal block described above, characterized in that the pivot axis of the separating knife between the upper contact area and the lower contact area is arranged that in the second position of the separating knife both the end of the first portion of the busbar from the upper contact region of the cutting blade and the End of the second portion of the busbar is spaced from the lower contact region of the separating knife, and that the separating knife is angled such that the arranged below the pivot axis portion of the cutting blade is bent away from the end of the second portion of the busbar.

Durch die Verlagerung der Schwenkachse des Trennmessers vom unteren Ende nach oben erfolgt eine erste Verringerung des erforderlichen Betätigungswinkels zum Verschwenken des Trennmessers aus der ersten Stellung in die zweite Stellung. Zusätzlich ist der erforderliche Betätigungswinkel noch dadurch verringert, daß in der zweiten, offenen Stellung des Trennmessers sowohl das Ende des ersten Teilstücks der Stromschiene vom oberen Kontaktbereich als auch das Ende des zweiten Teilstücks der Stromschiene vom unterenBy the displacement of the pivot axis of the cutting blade from the lower end to the top, a first reduction of the required operating angle for pivoting the cutting blade from the first position to the second position. In addition, the required operating angle is further reduced by the fact that in the second, open position of the cutting blade both the end of the first portion of the busbar from the upper contact area and the end of the second portion of the busbar from the lower

Kontaktbereich des Trennmessers beabstandet ist. Es gibt somit eine Trennstrecken zwischen dem Ende des ersten Teilstücks und dem oberen Kontaktbereich und eine Trennstrecken zwischen dem Ende des zweiten Teilstücks und dem unteren Kontaktbereich, wobei sich beide Trennstrecken zu einer Gesamttrennstrecke addieren, die eine sichere Trennung der beiden Teilstücke der Stromschiene auch bei einem geringen Betätigungswinkel gewährleistet. Damit steht ein Längstrennschalter bzw. ein Trennmesser zur Verfügung, der nur einen relativ geringen Platzbedarf innerhalb des Klemmengehäuses der Reihenklemme beansprucht, so daß die Reihenklemme insgesamt sehr kompakt aufgebaut sein kann.Contact area of the separating knife is spaced. There are thus a separation distances between the end of the first portion and the upper contact area and a separation distances between the end of the second portion and the lower contact area, both separating lines add to a total separation distance, the safe separation of the two sections of the busbar even at a ensures low operating angle. This is a longitudinal circuit breaker or a disconnector available, which requires only a relatively small footprint within the terminal housing of the terminal, so that the terminal can be constructed very compact overall.

Der erforderliche Betätigungswinkel und damit der für das Trennmesser innerhalb der Reihenklemme benötigte Platz kann dadurch weiter reduziert werden, daß erfindungsgemäß das Trennmesser derart abgewinkelt ist, daß der unterhalb der Schwenkachse angeordnete Bereich des Trennmessers vom Ende des zweiten Teilstücks der Stromschiene weggebogen ist. Durch die Geometrie des Trennmessers wird dadurch die Trennstrecke zwischen dem unteren Kontaktbereich und dem Ende des zweiten Teilstücks der Stromschiene vergrößert, so daß zur Gewährleitung einer bestimmten Gesamttrennstrecke zwischen den beiden Teilstücken der Stromschiene ein kleinerer Betätigungswinkel erforderlich ist.The required operating angle and thus the space required for the cutting blade within the terminal block can be further reduced in that the cutting blade according to the invention is angled such that the arranged below the pivot axis of the cutting blade is bent away from the end of the second section of the busbar. Due to the geometry of the separating blade thereby the separation distance between the lower contact region and the end of the second portion of the busbar is increased, so that a smaller operating angle is required to ensure a certain total separation distance between the two sections of the busbar.

Gemäß einer bevorzugten Ausgestaltung der Erfindung ist das Trennmesser teilweise von einem Isoliergehäuse umspritzt, wobei zumindest der obere Kontaktbereich und der untere Kontaktbereich nicht vom Isoliergehäuse umgeben sind und somit von den vorzugsweise als Kontaktgabeln ausgebildeten Enden der beiden Teilstücke in der ersten Stellung des Trennmessers kontaktiert werden können. Gemäß der bevorzugten Ausgestaltung besteht der Längstrennschalter somit aus dem Trennmesser und dem Isoliergehäuse. Dadurch, daß das Trennmesser teilweise vom Isoliergehäuse umspritzt ist, kann sowohl die Betätigung als auch die Montage des Längstrennschalters vereinfacht werden. Vorteilhafterweise ist nämlich das Trennmesser mit dem Isoliergehäuse in das Klemmengehäuse einsteckbar und dort definiert verrastbar.According to a preferred embodiment of the invention, the separating knife is partially encapsulated by an insulating housing, wherein at least the upper contact area and the lower contact area are not surrounded by the insulating housing and thus can be contacted by the preferably designed as contact forks ends of the two sections in the first position of the separating knife , According to the preferred embodiment, the longitudinal disconnector thus consists of the separating blade and the insulating housing. Due to the fact that the separating knife is partially encapsulated by the insulating housing, both the operation and the assembly of the longitudinal circuit breaker can be simplified. Advantageously, namely, the cutting blade with the insulating housing in the terminal housing can be inserted and defined there latched.

Die erfindungsgemäße Reihenklemme kann somit auch als Bausatz bestehend aus dem Klemmengehäuse mit der darin angeordneten, aus zwei Teilstücken bestehende Stromschiene und den Leiteranschlußelemente einerseits und dem Längstrennschalter andererseits vertrieben werden, wobei dann der Längstrennschalter erst bei der Montage der Reihenklemme in das Klemmengehäuse eingerastet wird.The terminal block according to the invention can thus also as a kit consisting of the terminal housing with the arranged therein, of two sections existing busbar and the conductor connection elements on the one hand and the longitudinal circuit breaker on the other hand are sold, in which case the longitudinal circuit breaker is not engaged in the assembly of the terminal block in the terminal housing.

Zur Realisierung der gewünschten Verschwenkbarkeit des Trennmesser innerhalb des Klemmengehäuses ist vorteilhafterweise weiter vorgesehen, daß an zumindest einer Seitenfläche des Isoliergehäuses ein Drehzapfen angeformt ist, der im montierten Zustand des Längstrennschalters in einer Öffnung in einer Seitenwand des Klemmengehäuses einrastet. Die Führung des Isoliergehäuses im Klemmengehäuse kann dadurch weiter verbessert werden, daß das Isoliergehäuse so dimensioniert ist, insbesondere eine solche Breite aufweist, daß es beim Verschwenken aus der ersten Stellung in die zweite Stellung zusätzlich durch die Seitenwände des Klemmengehäuses geführt wird. Zwischen dem Isoliergehäuse und den Seitenwänden des Klemmengehäuses ist dabei vorzugsweise eine leichte Preßpassung realisiert, die ein Verkanten des Isoliergehäuses und damit auch des Trennmessers beim Verschwenken zuverlässig verhindert. Da die Seitenwände des Klemmengehäuses nur eine relativ geringe Wandstärke aufweisen, sind die Seitenwände ausreichend nachgiebig, so daß ein gewolltes Verschwenken des Längstrennschalters aus der ersten Stellung in die zweite Stellung durch die Preßpassung nicht behindert wird.To realize the desired pivotability of the separating knife within the terminal housing is advantageously further provided that on at least one side surface of the insulating housing a pivot is formed, which engages in the mounted state of the longitudinal disconnector in an opening in a side wall of the terminal housing. The leadership of the insulating housing in the terminal housing can be further improved in that the insulating housing is dimensioned, in particular has a width such that it is additionally guided during pivoting from the first position to the second position by the side walls of the terminal housing. Between the insulating housing and the side walls of the terminal housing a slight interference fit is preferably realized, which reliably prevents tilting of the insulating housing and thus also of the separating blade during pivoting. Since the side walls of the terminal housing have only a relatively small wall thickness, the side walls are sufficiently yielding, so that a deliberate pivoting of the longitudinal circuit breaker from the first position to the second position is not hindered by the interference fit.

Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, daß eine oder beide Seitenwände des Klemmengehäuses eine Führungsnut aufweisen und daß an zumindest einer Seitenfläche des Isoliergehäuses ein Führungszapfen oder ein Führungssteg ausgebildet ist, wobei die Führungsnut bzw. die Führungsnuten so angeordnet sind, daß das Trennmesser nach dem Einstecken des Isoliergehäuses in das Klemmengehäuse automatisch in der zweiten Stellung angeordnet ist. Durch die Ausbildung der Führungsnuten und der korrespondierenden Führungszapfen oder Führungsstege ist somit gewährleistet, daß der Längstrennschalter nur in einer bestimmten Ausrichtung in das Klemmengehäuse eingesteckt werden kann. Als Führungszapfen, der mit einer Führungsnut in einer Seitenwand des Klemmengehäuses zusammenwirkt, kann dabei vorteilhafterweise der am Isoliergehäuse angeformte Drehzapfen dienen.According to a further advantageous embodiment of the invention it is provided that one or both side walls of the terminal housing have a guide groove and that on at least one side surface of the insulating housing, a guide pin or a guide web is formed, wherein the guide groove or the guide grooves are arranged so that the separating knife is automatically arranged in the second position after insertion of the insulating housing in the terminal housing. The formation of the guide grooves and the corresponding guide pins or guide webs thus ensures that the longitudinal circuit breaker can be inserted only in a certain orientation in the terminal housing. As a guide pin, which cooperates with a guide groove in a side wall of the terminal housing, can advantageously serve the molded on the insulating pivot.

Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, daß das Isoliergehäuse des Längstrennschalters an mindestens einer Seitenfläche einen Rastzapfen aufweist und daß in der korrespondierenden Seitenwand des Klemmengehäuses zwei zum Rastzapfen korrespondierende Ausnehmungen ausgebildet sind, in denen der Rastzapfen in der ersten Stellung bzw. in der zweiten Stellung des Trennmessers verrastet. Der Rastzapfen und die Ausnehmungen sind dabei vorteilhafterweise so ausgebildet, daß sowohl in der ersten Stellung als auch in der zweiten Stellung des Trennmessers eine formschlüssige Verrastung erfolgt, wobei das Einrasten des Rastzapfens in die Ausnehmung durch ein akustisches Klicken deutlich feststellbar ist.According to a further advantageous embodiment of the invention it is provided that the insulating housing of the circuit breaker on at least one side surface has a locking pin and that in the corresponding side wall of the terminal housing two recesses corresponding to the locking pin are formed, in which the locking pin in the first position or in the locked second position of the cutting knife. The locking pin and the recesses are advantageously designed so that both in the first position and in the second position of the separating knife a positive locking takes place, wherein the engagement of the locking pin in the recess by an acoustic click is clearly noticeable.

Zur einfachen Betätigung des Längstrennschalters, d.h. zur Verschwenkung des Trennmessers aus der ersten Stellung in die zweite Stellung, ist im Isoliergehäuse ein nach oben offener Betätigungsschacht ausgebildet, in den ein Werkzeug, insbesondere die Spitze eines Schraubendrehers, eingesteckt werden kann. Durch die dadurch erzielte Verlängerung des Hebelarmes kann das Trennmesser einfach aus der einen, verrasteten Stellung in die andere, ebenfalls verrastete Stellung verschwenkt werden. Der Betätigungsschacht ist dabei vorzugsweise so dimensioniert, daß zum Verschwenken des Längstrennschalters ein Schraubendreher verwendet werden kann, mit dem auch die Leiteranschlußelemente betätigt, d.h. geöffnet oder geschlossen werden können. Darüber hinaus verläuft der Betätigungsschacht vorzugsweise seitlich versetzt zum oberhalb der Schwenkachse angeordneten Bereich des Trennmessers. Dadurch kann der Betätigungsschacht eine große Tiefe aufweisen, wodurch die Spitze eines Schraubendrehers sicher geführt ist, ohne daß das Isoliergehäuse wesentlich über das obere Ende des Trennmessers hinausragen muß.For easy operation of the circuit breaker, i. for pivoting the separating blade from the first position to the second position, an open-topped actuating shaft is formed in the insulating housing, in which a tool, in particular the tip of a screwdriver, can be inserted. By thus achieved extension of the lever arm, the cutting blade can be easily pivoted from one, latched position to the other, also latched position. The actuating shaft is preferably dimensioned so that the pivoting of the longitudinal circuit breaker, a screwdriver can be used with which also operates the conductor connection elements, i. can be opened or closed. In addition, the actuating shaft preferably extends laterally offset to the above the pivot axis arranged region of the cutting blade. As a result, the actuating shaft can have a large depth, whereby the tip of a screwdriver is guided safely without the insulating housing must protrude substantially beyond the upper end of the cutting blade.

Die Ausbildung des Betätigungsschachts im Isoliergehäuse schafft darüber hinaus die Möglichkeit, bei mehreren nebeneinander angeordneten Reihenklemmen deren Längstrennschalter gleichzeitig zu betätigen, in dem eine Schalterverbindung verwendet wird, die mindestens zwei Schenkel und einen die Schenkel verbindenden Griffabschnitt aufweist. Die einzelnen Schenkeln der Schalterverbindung sind dabei so ausgebildet, daß sie jeweils in einen Betätigungsschacht eingesteckt und vorzugsweise auch verrasten können. Dadurch können mit einem einzigen Handgriff gleichzeitig mehrere Längstrennschalter mehrerer Reihenklemmen geschaltet werden.The formation of the actuating shaft in the insulating housing also creates the possibility to operate at several juxtaposed terminal blocks whose circuit breaker at the same time, in which a switch connection is used which has at least two legs and a leg connecting the handle portion. The individual legs of the switch connection are designed so that they can each be inserted into an operating shaft and preferably also lock. As a result, several longitudinal disconnectors of several terminal blocks can be switched simultaneously with a single movement.

Gemäß einer letzten vorteilhaften Ausgestaltung der erfindungsgemäßen Reihenklemme, die hier noch kurz erläutert werden soll, ist eine Schaltsperre vorgesehen, die zur Blockierung des Trennmessers in der einen und/oder der anderen Stellung in das Klemmengehäuse eingesteckt und darin verrastet werden kann. Die Schaltsperre ist dabei vorzugsweise so ausgebildet, daß sie lediglich um 180° gedreht werden muß, um in der einen oder der anderen Stellungen des Trennmessers in das Klemmengehäuse eingesteckt werden zu können. Darüber hinaus ist vorteilhafterweise vorgesehen, daß die Schaltsperre eine im eingesteckten Zustand dem Isoliergehäuse zugewandte offene Stirnseite aufweist, so daß auch bei eingesteckter Schaltsperre ein auf einer Stirnseite des Kunststoffgehäuses aufgedrucktes Symbol zur Kennzeichnung der Stellung des Trennmessers von oben durch die Schaltsperre sichtbar ist.According to a last advantageous embodiment of the terminal block according to the invention, which will be briefly explained here, a shift lock is provided, which can be plugged into the terminal housing and locked therein to block the cutting blade in one and / or the other position. The shift lock is preferably designed so that it only needs to be rotated by 180 ° in order to be able to be plugged into the terminal housing in one or the other positions of the cutting blade. In addition, it is advantageously provided that the switching lock has a plugged in the insulating housing facing the open end, so that even when plugged lockout on a front side of the plastic housing printed symbol for indicating the position of the cutting blade from above by the shift lock is visible.

Bei dem eingangs genannten Längstrennschalter ist die Aufgabe mit den Merkmalen des Patentanspruchs 13 dadurch gelöst, daß die Schwenkachse des Trennmessers zwischen dem oberen Kontaktbereich und dem unteren Kontaktbereich angeordnet ist und daß in einer zweiten Stellung des Trennmessers sowohl der obere Kontaktbereich des Trennmessers von dem Ende des ersten Teilstücks der Stromschiene als auch der untere Kontaktbereich des Trennmessers von dem Ende des zweiten Teilstücks der Stromschiene beabstandet ist. Bezüglich der Vorteile und vorteilhaften Ausgestaltungen des Längstrennschalters wird auf die Patentansprüche 14 bis 17 sowie die vorherigen Ausführungen zur erfindungsgemäßen Reihenklemme verwiesen.In the case of the above-mentioned longitudinal disconnect switch, the object with the features of claim 13 is achieved in that the pivot axis of the separating knife between the upper contact region and the lower contact region is arranged and that in a second position of the separating knife both the upper contact region of the separating knife from the end of first portion of the busbar and the lower contact portion of the separating blade is spaced from the end of the second portion of the bus bar. With regard to the advantages and advantageous embodiments of the circuit breaker, reference is made to the claims 14 to 17 and the previous versions of the terminal block according to the invention.

Im einzelnen gibt es nun eine Vielzahl von Möglichkeiten, die erfindungsgemäße Reihenklemme auszugestalten und weiterzubilden. Dazu wird verwiesen sowohl auf die dem Patentanspruch 1 nachgeordneten Patentansprüche, als auch auf die nachfolgende Beschreibung bevorzugter Ausführungsbeispiele in Verbindung mit Zeichnung. In der Zeichnung zeigen

Fig. 1
eine perspektivische Darstellung einer erfindungsgemäßen Reihenklemme, mit teilweise weggelassener Seitenwand,
Fig. 2
eine vergrößerte Darstellung des mittleren Bereichs der Reihenklemme gemäß Fig. 1, mit einem Längstrennschalter in der ersten Stellung,
Fig. 3
eine vergrößerte Darstellung des mittleren Bereichs der Reihenklemme gemäß Fig. 1, mit einem Längstrennschalter in der zweiten Stellung,
Fig. 4
eine separate Darstellung des Längstrennschalters,
Fig. 5
die beiden über das Trennmesser elektrisch miteinander verbundenen Teilstücke der Stromschiene einer Reihenklemme,
Fig. 6
eine vergrößerte Darstellung des mittleren Bereichs der Reihenklemme, mit einem Längstrennschalter in der ersten Stellung und einer eingesetzten Schaltsperre,
Fig. 7
eine vergrößerte Darstellung des mittleren Bereichs der Reihenklemme, mit einem Längstrennschalter in der zweiten Stellung und einer eingesetzten Schaltsperre,
Fig. 8
eine perspektivische Darstellung zweier benachbart auf einer Tragschiene angeordneter Reihenklemmen, und
Fig. 9
eine Schnittdarstellung durch den mittleren Bereich einer Reihenklemme gemäß Fig. 8, mit eingesteckter Schalterverbindung.
In particular, there are a variety of ways to design and further develop the terminal block according to the invention. Reference is made to both the claims subordinate to claim 1, as well as to the following description of preferred embodiments in conjunction with the drawings. In the drawing show
Fig. 1
a perspective view of a terminal block according to the invention, with partially omitted side wall,
Fig. 2
an enlarged view of the central region of the terminal according to Fig. 1 , with a longitudinal circuit breaker in the first position,
Fig. 3
an enlarged view of the central region of the terminal according to Fig. 1 , with a longitudinal circuit breaker in the second position,
Fig. 4
a separate representation of the longitudinal circuit breaker,
Fig. 5
the two sections of the busbar of a terminal block which are electrically connected to one another via the separating knife,
Fig. 6
an enlarged view of the central region of the terminal, with a longitudinal circuit breaker in the first position and an inserted shift lock,
Fig. 7
an enlarged view of the central region of the terminal, with a circuit breaker in the second position and an inserted shift lock,
Fig. 8
a perspective view of two adjacent arranged on a support rail terminal blocks, and
Fig. 9
a sectional view through the middle region of a terminal according to Fig. 8 , with inserted switch connection.

Fig. 1 zeigt eine erfindungsgemäße Reihenklemme 1 in Form einer Trennklemme, die insbesondere als Meßwandler-Trennklemme in Stromwandler-Meßkreisen der Energieerzeugung und -verteilung einsetzbar ist. Die Reihenklemme 1 weist ein in der Regel aus Kunststoff bestehendes Klemmengehäuse 2 auf, in dem eine aus zwei Teilstücken 3, 4 bestehende Stromschiene und zwei Leiteranschlußelemente 5, 6 angeordnet sind. Die Leiteranschlußelemente 5, 6 sind im dargestellten Ausführungsbeispiel als Schenkelfederklemmen ausgebildet, in die jeweils ein anzuschließender Leiter durch eine im Klemmengehäuse 2 ausgebildete Leitereinführungsöffnung 7 eingesteckt werden kann. Darüber hinaus können die Leiteranschlußelemente 5, 6 jedoch auch als Schraubklemmen, als Zugfederklemmen oder als Schneidanschlußklemmen ausgebildet sein. Mit Hilfe der Leiteranschlußelemente 5, 6 kann jeweils ein elektrischer Leiter an ein Teilstück 3, 4 der Stromschiene angeschlossen werden. Fig. 1 shows a terminal block 1 according to the invention in the form of a disconnect terminal, which can be used in particular as a measuring transducer isolating terminal in current transformer measuring circuits of power generation and distribution. The terminal block 1 has a generally made of plastic terminal housing 2, in which a two sections 3, 4 existing busbar and two conductor connection elements 5, 6 are arranged. The conductor connection elements 5, 6 are formed in the illustrated embodiment as leg spring terminals, in each of which a conductor to be connected can be inserted through a formed in the terminal housing 2 conductor insertion opening 7. In addition, however, the conductor connection elements 5, 6 may also be designed as screw terminals, as tension spring terminals or as cutting terminals. With the help of the conductor connection elements 5, 6 can each one electrical conductor to a section 3, 4 of the busbar are connected.

Bei der in der Fig. 1 dargestellten Reihenklemme 1 besteht die Möglichkeit, die beiden Teilstücke 3, 4 der Stromschiene - und damit auch die an die Leiteranschlußelemente 5, 6 angeschlossenen Leiter - wahlweise miteinander zu verbinden oder zu trennen. Dazu ist in dem Klemmengehäuse 2 ein in Fig. 4 separat dargestellter Längstrennschalter angeordnet, dessen Trennmesser 8 aus einer ersten Stellung, in der die beiden Teilstücke 3, 4 miteinander verbunden sind (Fig. 2) in eine zweite Stellung verschwenkt werden kann, in der die beiden Teilstücke 3, 4 voneinander getrennt sind (Fig. 3).When in the Fig. 1 illustrated terminal 1, it is possible to connect the two sections 3, 4 of the busbar - and thus also connected to the conductor terminal elements 5, 6 conductors - either with each other or separate. For this purpose, in the terminal housing 2 a in Fig. 4 separately shown longitudinal disconnector, whose separating knife 8 from a first position in which the two sections 3, 4 are interconnected ( Fig. 2 ) can be pivoted to a second position in which the two sections 3, 4 are separated from each other ( Fig. 3 ).

Wie aus den Figuren, insbesondere den Fig. 2 und 3 sowie der Fig. 5 erkennbar ist, sind die den Leiteranschlußelementen 5, 6 abgewandten Enden 9, 10 der Teilstücke 3, 4 derart abgebogen, daß sich das Ende 9 des Teilstücks 3 in einer Ebene oberhalb des Endes 10 des Teilstücks 4 befindet. Ausgehend von dem jeweils näherungsweise waagerecht verlaufendem Mittelbereich der Teilstücke 3, 4 ist somit das Ende 9 des Teilstücks 3 nach oben und das Ende 10 des Teilstücks 4 nach unten abgebogen. Dies führt dazu, daß in der in den Fig. 1 und 2 dargestellten ersten Stellung des Trennmessers 8 das Ende 9 des ersten Teilstücks 3 der Stromschiene das Trennmesser 8 an einem oberen Kontaktbereich 11 und das Ende 10 des zweiten Teilstücks 4 das Trennmesser 8 an einem unteren Kontaktbereich 12 kontaktiert.As from the figures, especially the Fig. 2 and 3 as well as the Fig. 5 can be seen, the conductor connecting elements 5, 6 opposite ends 9, 10 of the sections 3, 4 are bent such that the end 9 of the section 3 is in a plane above the end 10 of the section 4. Starting from the respectively approximately horizontally extending middle region of the sections 3, 4, the end 9 of the section 3 is thus bent upward and the end 10 of the section 4 is bent downwards. This causes that in the in the Fig. 1 and 2 shown the first position of the separating knife 8, the end 9 of the first portion 3 of the busbar the separating blade 8 at an upper contact portion 11 and the end 10 of the second portion 4, the separating knife 8 contacted at a lower contact portion 12.

Dabei sind die Enden 9, 10 der beiden Teilstücke 3, 4 der Stromschiene jeweils als Kontaktgabeln 13 ausgebildet, zwischen die der jeweilige Kontaktbereich 11, 12 des Trennmessers 8 in der ersten Stellung eingesteckt ist, wobei die Kontaktgabeln 13 bzw. das Trennmesser 8 so dimensioniert sind, daß eine sichere und gute elektrische Kontaktierung gewährleistet ist. Außerdem sind die Kontaktgabel 13 so abgebogen bzw. zum Trennmesser 8 angeordnet, daß die Kontaktgabel 13 nahezu lotrecht auf die beiden Kontaktbereich 11, 12 des Trennmessers 8 auftreffen. Dadurch wird der Verschließ auf der Oberfläche des Trennmessers 8 minimiert bzw. eine auf der Oberfläche des Trennmessers 8 aufgebrachte Kontaktschicht nur geringfügig verkratzt.The ends 9, 10 of the two sections 3, 4 of the busbar are each formed as contact forks 13, between which the respective contact region 11, 12 of the separating blade 8 is inserted in the first position, wherein the contact forks 13 and the separating knife 8 dimensioned are that a safe and good electrical contact is guaranteed. In addition, the contact fork 13 are bent or arranged to the cutting blade 8, that the contact fork 13 impinge almost perpendicular to the two contact region 11, 12 of the cutting blade 8. As a result, the closure on the surface of the separating knife 8 is minimized or a contact layer applied to the surface of the separating knife 8 is only slightly scratched.

Zuvor ist ausgeführt worden, daß der Längstrennschalter schwenkbar im Klemmengehäuse 2 der Trennklemme 1 angeordnet ist. Der - in Fig. 4 separat dargestellte - Längstrennschalter weist dabei neben dem Trennmesser 8 noch ein Isoliergehäuse 14 auf, welches so ausgebildet ist, daß zumindest der obere Kontaktbereich 11 und der untere Kontaktbereich 12 des Trennmessers 8 nicht von dem Isoliergehäuse 14 umgeben sind. Vorteilhafterweise wird dabei die Verbindung von Trennmesser 8 und Isoliergehäuse 14 dadurch gewährleistet, daß das Trennmesser 8 von dem Isoliergehäuse 14 umspritzt ist. Zur schwenkbaren Lagerung des Längstrennschalters bzw. des Trennmessers 8 innerhalb des Klemmengehäuses 2 ist an einer Seitenfläche des Isoliergehäuses 14 ein Drehzapfen 15 angeformt, der in einer korrespondierenden Öffnung 18 in einer Seitenwand 16 des Klemmengehäuses 2 gelagert ist.Previously, it has been stated that the longitudinal disconnect switch is pivotally mounted in the terminal housing 2 of the disconnect terminal 1. The - in Fig. 4 separately shown - longitudinal disconnector has in addition to the separating knife 8 still an insulating housing 14 which is formed so that at least the upper contact portion 11 and the lower contact portion 12 of the separating blade 8 are not surrounded by the insulating housing 14. Advantageously, the connection of separating knife 8 and insulating housing 14 is thereby ensured that the separating knife 8 is encapsulated by the insulating housing 14. For pivotal mounting of the longitudinal circuit breaker or the separating blade 8 within the terminal housing 2, a pivot pin 15 is integrally formed on a side surface of the insulating housing 14, which is mounted in a corresponding opening 18 in a side wall 16 of the terminal housing 2.

Zusätzlich zur Lagerung über den in der Öffnung 18 eingerasteten Drehzapfen 15 ist der Längstrennschalter bzw. das Isoliergehäuse 14 auch durch die beiden Seitenwände 16, 17 des Klemmengehäuses geführt. Hierzu ist die Breite des Isoliergehäuses 14 so gewählt, daß es im in das Klemmengehäuse 2 eingesetzten Zustand an beiden Seitenwänden 16, 17 des Klemmengehäuses 2 eng anliegt. Durch diese zusätzliche seitliche Führung des Isoliergehäuses 14 an den Seitenwänden 16, 17 des Klemmengehäuses 2 ist die Ausbildung nur eines Drehzapfens 15 auf einer Seite des Isoliergehäuses 14 ausreichend. Dies führt dazu, daß die zweite Seitenwand 17 des Klemmengehäuses geschlossen sein kann, wodurch die Einhaltung der erforderlichen Luft- und Kriechstrecken einfacher sichergestellt werden kann.In addition to storage over the locked in the opening 18 pivot 15 of the circuit breaker or the insulating housing 14 is also guided by the two side walls 16, 17 of the terminal housing. For this purpose, the width of the insulating housing 14 is selected so that it fits tightly in the inserted into the terminal housing 2 state on both side walls 16, 17 of the terminal housing 2. By this additional lateral guidance of the insulating housing 14 on the side walls 16, 17 of the terminal housing 2, the formation of only one pivot pin 15 on one side of the insulating housing 14 is sufficient. This results in that the second side wall 17 of the terminal housing can be closed, whereby compliance with the required clearance and creepage distances can be ensured easier.

Bei der erfindungsgemäßen Reihenklemme 1 ist die Schwenkachse des Trennmessers 8, d.h. der Drehzapfen 15, zwischen dem oberen Kontaktbereich 11 und dem unteren Kontaktbereich 12 angeordnet. Dies führt dazu, daß der benötigte Betätigungswinkel zum Verschwenken des Trennmessers 8 aus der ersten Stellung in die zweite Stellung im Vergleich zu einer Drehlagerung des Trennmessers an dessen unteren Ende verringert ist. Zusätzlich sind in der zweiten Stellung des Trennmessers 8 - wie insbesondere aus den Fig. 3 und 7 ersichtlich ist - sowohl das Ende 9 des ersten Teilstücks 3 der Stromschiene vom oberen Kontaktbereich 11 als auch das Ende 10 des zweiten Teilstücks 4 der Stromschiene vom unteren Kontaktbereich 12 des Trennmessers 8 beabstandet. Somit addieren sich die beiden Trennstrecken zwischen dem Ende 9 des ersten Teilstücks 3 und dem oberen Kontaktbereich 11 einerseits und dem Ende 10 des zweiten Teilstücks 4 und dem unteren Kontaktbereich 12 andererseits zu einer Gesamttrennstrecke, die eine sichere Trennung der beiden Teilstücke 3, 4 der Stromschiene gewährleistet.In the terminal block 1 according to the invention, the pivot axis of the separating knife 8, that is, the pivot pin 15, between the upper contact portion 11 and the lower contact portion 12 is arranged. This results in that the required operating angle for pivoting the separating knife 8 is reduced from the first position to the second position compared to a rotary bearing of the separating knife at the lower end. In addition, in the second position of the separating knife 8 - as in particular from the Fig. 3 and 7 it can be seen - both the end 9 of the first portion 3 of the busbar from the upper contact portion 11 and the end 10 of the second portion 4 of the busbar from the lower contact portion 12 of the separating blade 8 spaced. Thus, the two separation lines add up between the end 9 of the first part 3 and the upper contact region 11 on the one hand and the end 10 of the second part 4 and the lower contact region 12 on the other hand to a total separation distance, which ensures a secure separation of the two sections 3, 4 of the busbar.

Schließlich ist bei dem dargestellten bevorzugten Ausführungsbeispiel das Trennmesser 8 noch derart abgewinkelt, daß der unterhalb der Schwenkachse, d.h. unterhalb des Drehzapfens 5, angeordnete Bereich des Trennmessers 8 vom Ende 10 des zweiten Teilstücks 4 weggebogen ist, wie ebenfalls aus den Fig. 3 und 7 erkennbar ist. Hierdurch ist insgesamt ein Betätigungswinkel von nur ca. 30° ausreichen, so daß zum einen der mittlere Bereich der Reihenklemme 1 - und damit die Reihenklemme 1 insgesamt -geringe Abmessungen aufweisen kann, zum anderen die Betätigung des Längstrennschalters sehr einfach und komfortabel auch bei beengten Platzverhältnissen möglich ist.Finally, in the illustrated preferred embodiment, the cutting blade 8 is still angled so that the below the pivot axis, ie, below the pivot 5, arranged portion of the cutting blade 8 is bent away from the end 10 of the second section 4, as well as from Fig. 3 and 7 is recognizable. As a result, a total of an operating angle of only about 30 ° sufficient, so that on the one hand, the middle portion of the terminal 1 - and thus the terminal 1 total -small dimensions, on the other hand, the operation of the circuit breaker very easy and comfortable even in confined spaces is possible.

Im oberen Bereich des Isoliergehäuses 14 ist auf der selben Seite, auf der sich der Drehzapfen 15 befindet, zusätzlich noch ein Rastzapfen 19 angeformt, durch den das Trennmesser 8 bzw. der Längstrennschalter sowohl in der ersten Stellung als auch in der zweiten Stellung im Klemmengehäuse 2 verrastbar ist. Dazu sind in der dem Rastzapfen 19 zugewandten Seitenwand 16 des Klemmengehäuses 2 zwei Ausnehmungen 20 ausgebildet, in denen der Rastzapfen 19 in der ersten Stellung bzw. in der zweiten Stellung des Trennmessers 8 formschlüssig verrastet. Die formschlüssige Verrastung des Rastzapfens 19 in den beiden Ausnehmungen 20 führt dabei zusammen mit der engen Führung des Isoliergehäuses 14 zwischen den beiden Seitenwänden 16, 17 des Klemmengehäuses 2 dazu, daß für den Monteur die Verrastung sowohl in der ersten Stellung als auch in der zweiten Stellung durch ein akustisches Klicken deutlich feststellbar ist.In the upper region of the insulating housing 14 is on the same side on which the pivot pin 15 is additionally formed a locking pin 19, formed by the separating knife 8 and the longitudinal disconnector both in the first position and in the second position in the terminal housing. 2 is latched. For this purpose, two recesses 20 are formed in which the latching pin 19 facing side wall 16 of the terminal housing 2, in which the latching pin 19 is positively locked in the first position or in the second position of the cutting blade 8. The positive locking of the locking pin 19 in the two recesses 20 leads, together with the narrow guide of the insulating housing 14 between the two side walls 16, 17 of the terminal housing 2 to the fact that for the fitter the locking both in the first position and in the second position clearly noticeable by an acoustic click.

Die Montage des in Fig. 4 separat dargestellten Längstrennschalters in dem Klemmengehäuse 2 der Reihenklemme 1 kann einfach dadurch erfolgen, daß der Längstrennschalter in das Klemmengehäuse 2 eingesteckt und darin verrastet wird. Hierzu ist in den beiden Seitenwänden 16, 17 des Klemmengehäuses 2 jeweils eine Führungsnut 21 ausgebildet, in die beim Einstecken des Längstrennschalters in das Klemmengehäuse 2 zum einen der Drehzapfen 14 und zu anderen ein auf der gegenüberliegenden Seitenfläche des Isoliergehäuses 14 ausgebildeter entsprechender Führungszapfen eingreift. Dadurch ist sichergestellt, daß der Längstrennschalter nur derart in das Klemmengehäuse 2 eingesteckt werden kann, daß sich das Trennmesser 8 im eingerasteten Zustand des Isoliergehäuses 14 im Klemmengehäuse 2 zunächst in der zweiten, offenen Stellung befindet. Die Verrastung des Isoliergehäuses 14 in dem Klemmengehäuse 2 erfolgt dabei dadurch, daß der Drehzapfen 15 in die Öffnung 18 in der Seitenwand 16 des Klemmengehäuses 2 einrastet, was sowohl optisch als auch akustisch durch ein entsprechendes Klicken wahrnehmbar ist.The assembly of in Fig. 4 separately shown longitudinal circuit breaker in the terminal housing 2 of the terminal 1 can be done simply by the fact that the circuit breaker is inserted into the terminal housing 2 and locked therein. For this purpose, in each case a guide groove 21 is formed in the two side walls 16, 17 of the terminal housing 2, in which when inserting the circuit breaker in the terminal housing 2 on the one of the pivot pin 14 and to another on the opposite side surface of the insulating housing 14 trained corresponding guide pin engages. This ensures that the circuit breaker can only be plugged into the terminal housing 2 so that the cutting blade 8 is in the locked state of the insulating housing 14 in the terminal housing 2, first in the second, open position. The locking of the insulating housing 14 in the terminal housing 2 takes place in that the pivot pin 15 engages in the opening 18 in the side wall 16 of the terminal housing 2, which is visually and acoustically perceptible by a corresponding click.

Um das Verschwenken des Längstrennschalters aus der einen Stellung in die andere Stellung zu erleichtern, ist in dem Isoliergehäuse 14 ein nach oben offener Betätigungsschacht 22 ausgebildet, in den ein Werkzeug, insbesondere die Spitze eines Schraubendrehers 23, eingesteckt werden kann. Der Betätigungsschacht 22 ist dabei so dimensioniert, daß in ihn die Spitze eines Schraubendrehers 23 eingesteckt werden kann, mit dem auch die Leiteranschlußelemente 5, 6 betätigt werden können. Zum Anschließen der Leiter und zum Betätigen des Längstrennschalters wird somit nur ein einfacher Schraubendreher benötigt.In order to facilitate the pivoting of the longitudinal circuit breaker from one position to the other position, in the insulating housing 14, an upwardly open actuating shaft 22 is formed, in which a tool, in particular the tip of a screwdriver 23, can be inserted. The actuating shaft 22 is dimensioned so that in him the tip of a screwdriver 23 can be inserted, with which also the conductor connection elements 5, 6 can be operated. Thus, only a simple screwdriver is needed to connect the conductors and to operate the circuit breaker.

Den Fig. 2 und 4 kann entnommen werden, daß auf einer Stirnseite 24 des Isoliergehäuses 14 ein Symbol 26 aufgedruckt ist, welches die jeweilige Stellung des Trennmessers 8 in der Reihenklemme 1 anzeigt. Da sich in der Fig. 2 der Längstrennschalter in der ersten, geschlossenen Stellung befindet, ist auf der in dieser Stellung sichtbaren Stirnseite 24 des Isoliergehäuses 14 das Symbol 26 eines geschlossenen Schalters aufgedruckt. Korrespondierend dazu ist auf der gegenüberliegenden Stirnseite 25 das Symbol eines geöffneten Schalters aufgedruckt. Dadurch kann ein Monteur bei einem kurzen Blick auf die Oberseite des Klemmengehäuses 2 sofort erkennen, in welcher Stellung sich der Längstrennschalter gerade befindet.The Fig. 2 and 4 can be seen that on a front side 24 of the insulating housing 14, a symbol 26 is printed, which indicates the respective position of the separating blade 8 in the terminal block 1. As in the Fig. 2 the longitudinal circuit breaker is in the first, closed position, is printed on the visible in this position end face 24 of the insulating housing 14, the symbol 26 of a closed switch. Corresponding to this, the symbol of an open switch is printed on the opposite end face 25. As a result, a fitter can immediately see at a glance at the top of the terminal housing 2, in which position the circuit breaker is currently located.

Die Fig. 6 und 7 zeigen ein Ausführungsbeispiel einer Reihenklemme 1, bei dem eine Schaltsperre 27 zur Blockierung des Trennschalters 8 in der ersten Stellung (Fig. 6) bzw. in der zweiten Stellung (Fig. 7) in das Klemmengehäuse 2 eingesteckt und darin verrastet ist. Die Schaltsperre 27 ist dabei so ausgebildet, daß sie nach dem Einrasten in das Klemmengehäuse 2 nur noch mit einem Werkzeug, beispielsweise mit einer Spitzzange aus dem Klemmengehäuse 2 entfernt werden kann, so daß eine ungewollte Betätigung des Längstrennschalters zuverlässig verhindert wird. Wie aus den Fig. 6 und 7 ersichtlich ist, kann dabei dieselbe Schaltsperre 27 sowohl in der ersten Stellung des Längstrennschalters als auch in der zweiten Stellung des Längstrennschalters in das Klemmengehäuse 2 eingesetzt werden, wozu die Schaltsperre 27 lediglich um 180° gedreht werden muß. Zur Verrastung im Klemmengehäuse 2 weist die Schaltsperre 27 an einer Seite einen Rastzapfen 28 auf, der je nach Anordnung der Schaltsperre 27 in einer Öffnung 29 in der einen Seitenwand 16 oder der anderen Seitenwand 17 des Klemmengehäuses 2 einrastet.The 6 and 7 show an embodiment of a terminal block 1, in which a shift lock 27 for blocking the circuit breaker 8 in the first position ( Fig. 6 ) or in the second position ( Fig. 7 ) is inserted into the terminal housing 2 and locked therein. The shift lock 27 is designed so that after locking into the terminal housing 2 only with a tool, for example, with a pair of needle nose pliers from the terminal housing 2 can be removed, so that an accidental operation of the circuit breaker is reliably prevented. Like from the 6 and 7 it can be seen, while the same shift lock 27 can be used both in the first position of the circuit breaker as well as in the second position of the circuit breaker in the terminal housing 2, to which the shift lock 27 must be rotated only by 180 °. For latching in the terminal housing 2, the shift lock 27 on one side of a locking pin 28 which engages depending on the arrangement of the shift lock 27 in an opening 29 in one side wall 16 or the other side wall 17 of the terminal housing 2.

Wie aus den Fig. 8 und 9 ersichtlich ist, kann die Betätigung des Längstrennschalters nicht nur mit Hilfe eines Schraubendrehers 23, sondern auch mit Hilfe einer Schalterverbindung 30 erfolgen, die bei dem in Fig. 8 dargestellten Ausführungsbeispiel zwei Schenkel 31 und einen die Schenkel 31 verbindenden Griffabschnitt 32 aufweist. Mit Hilfe einer derartigen Schalterverbindung 30 können somit gleichzeitig zwei Längstrennschalter zweier nebeneinander angeordneter Reihenklemmen 1 betätigt werden, wozu jeweils ein Schenkel 31 in den Betätigungsschacht 22 eines Längstrennschalters eingesteckt wird.Like from the Fig. 8 and 9 can be seen, the operation of the circuit breaker can be done not only by means of a screwdriver 23, but also by means of a switch connection 30, which in the in Fig. 8 illustrated embodiment, two legs 31 and a leg 31 connecting handle portion 32 has. With the help of such a switch connection 30 thus two longitudinal circuit breaker two juxtaposed terminal blocks 1 can be operated simultaneously, for which purpose a leg 31 is inserted into the operating shaft 22 of a longitudinal circuit breaker.

Aus den Fig. 1 und 8 ist schließlich noch erkennbar, daß die dort dargestellten Reihenklemmen 1 auf beiden Seiten des Längstrennschalters mehrere Führungsschächte 33 aufweisen, in die wahlweise die Kontaktstifte eines Prüfsteckers, einer Prüfsteckerbuchse, einer Steckbrücke oder einer Schaltbrücke eingesteckt werden können. Zur Kontaktierung der Kontaktstifte sind dabei in den beiden Teilstücken 3, 4 der Stromschiene jeweils drei Öffnungen 34 ausgebildet (Fig. 5).From the Fig. 1 and 8th Finally, it can still be seen that the terminal blocks 1 shown there have a plurality of guide shafts 33 on both sides of the longitudinal circuit breaker, in which either the contact pins of a test plug, a test socket, a jumper or a jumper can be inserted. For contacting the contact pins in each case three openings 34 are formed in the two sections 3, 4 of the busbar ( Fig. 5 ).

Claims (12)

  1. Modular terminal, in particular an isolating terminal, with a terminal housing (2), with a busbar consisting of two sections (3, 4), with two terminal elements (5, 6) for connecting one conductor at a time to a section (3, 4) of the busbar, and with an isolating blade (8) supported pivotally in the terminal housing (2),
    wherein the two sections (3, 4) are connected to one another in a first position of the isolating blade (8) and are separated from one another in a second position of the isolating blade (8), and
    wherein the ends (9, 10) of the sections (3, 4) of the busbar facing away from the terminal elements (5, 6) are bent such that, in the first position of the isolating blade (8), the end (9) of the first section (3) of the busbar makes contact with the isolating blade (8) at an upper contact region (11) and the end (9) of the second section (4) of the busbar makes contact with the isolating blade (8) at a lower contact region (12),
    characterized in
    that the pivot axis of the isolating blade (8) is arranged between the upper contact region (11) and the lower contact region (12),
    that, in the second position of the isolating blade (8), both the end (9) of the first section (3) of the busbar is spaced apart from the upper contact region (11) of the isolating blade (8) and the end (10) of the second section (4) of the busbar is spaced apart from the lower contact region (12) of the isolating blade (8), and
    that the isolating blade (8) is angled such that the region of the isolating blade (8) located below the pivot axis is bent away from the end (10) of the second section (4) of the busbar.
  2. Modular terminal according to claim 1, characterized in that the ends (9, 10) of the two sections (3, 4) of the busbar are designed as contact forks (13).
  3. Modular terminal according to claim 1 or 2, characterized in that the isolating blade (8) is partially surrounded by an insulating housing (14), wherein at least the upper contact region (11) and the lower contact region (12) not being surrounded by the insulating housing (14), and
    that the insulating housing (14) has a pivot (15) on a side surface and a corresponding opening (18) is formed in a side wall (16) of the terminal housing (2).
  4. Modular terminal according to claim 3, characterized in that the isolating blade (8) can be locked both in the first position and in the second position, for which the insulating housing (14) has a catch journal (19) on one side surface and two corresponding recesses (20) are formed in a side wall (16) of the terminal housing (2), in which recesses the catch journal (19) locks in the first position and in the second position of the isolating blade (8).
  5. Modular terminal according to claim 4, characterized in that the insulating housing (14) of the isolating blade (8) is dimensioned such that the insulating housing (14) is guided by the side walls (16, 17) of the terminal housing (2) when pivoted out of the first position into the second position.
  6. Modular terminal according to claim 5, characterized in that the isolating blade (8) with the insulating housing (14) can be inserted into the terminal housing (2) and can be locked in the insulating housing (14), wherein preferably one or both side walls (16, 17) of the terminal housing (2) has a guide groove (21), wherein the guide groove (21) or the guide grooves (21) are arranged such that the isolating blade (8) is arranged in the second position after insertion.
  7. Modular terminal according to any one of claims 3 to 6, characterized in that the insulating housing (14) has an actuating slot (22) that is open to the top and into which a tool, especially the tip of a screwdriver (23), can be inserted, wherein the actuating slot (22) preferably runs laterally offset to the region of the isolating blade (8) which is located above the pivoting axis.
  8. Modular terminal according to any one of claims 3 to 7, characterized in that a symbol (26) for the respective position of the isolating blade (8) is applied on both end faces (24, 25) of the insulating housing (14) in such a manner that the symbol (26) can be seen when looking at the top of the terminal housing (2).
  9. Modular terminal according to any one of claims 1 to 8, characterized in that a lockout device (27) can be inserted into the terminal housing (2) for blocking the isolating blade (8) in the first and/or second position, wherein the lockout device (27) preferably can be locked in the terminal housing (2) such that the lockout device (27) can only be removed from the terminal housing (2) again with a tool.
  10. Modular terminal according to claims 8 and 9, characterized in that the end face of the lockout device (27) facing the insulating housing (14) in the inserted state of the lockout device (27) is open or transparent, so that the symbol (26) on the insulating housing (14) can be seen from overhead even when the lockout device (27) is inserted.
  11. Modular terminal according to any one of the claims 7 to 10, characterized in that a switch connection (30), which has at least two legs (31) and a grip section (32) connecting the legs (31), can be inserted with one leg (31) into the actuating slot (22) in the insulating housing (14).
  12. Modular terminal according to any one of claims 1 to 11, characterized in that the terminal housing (2) has several guide slots (33) and that several openings (34) are formed in the two sections (3, 4) of the busbar for inserting a contact pin of a test plug, a test socket, a plug-in jumper or a jumper.
EP09720012.5A 2008-03-14 2009-03-12 Modular terminal, particularly disconnect terminal Active EP2255369B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008014176A DE102008014176B4 (en) 2008-03-14 2008-03-14 Terminal block, in particular isolating terminal, and circuit breaker
PCT/EP2009/001792 WO2009112264A1 (en) 2008-03-14 2009-03-12 Modular terminal, particularly isolating terminal

Publications (2)

Publication Number Publication Date
EP2255369A1 EP2255369A1 (en) 2010-12-01
EP2255369B1 true EP2255369B1 (en) 2018-11-14

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Application Number Title Priority Date Filing Date
EP09720012.5A Active EP2255369B1 (en) 2008-03-14 2009-03-12 Modular terminal, particularly disconnect terminal

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US (1) US8581131B2 (en)
EP (1) EP2255369B1 (en)
JP (1) JP5542698B2 (en)
CN (1) CN102027559B (en)
DE (1) DE102008014176B4 (en)
ES (1) ES2703758T3 (en)
WO (1) WO2009112264A1 (en)

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Also Published As

Publication number Publication date
JP5542698B2 (en) 2014-07-09
EP2255369A1 (en) 2010-12-01
US20110062011A1 (en) 2011-03-17
US8581131B2 (en) 2013-11-12
DE102008014176A1 (en) 2009-09-17
CN102027559A (en) 2011-04-20
WO2009112264A1 (en) 2009-09-17
JP2011517500A (en) 2011-06-09
CN102027559B (en) 2014-08-20
ES2703758T3 (en) 2019-03-12
DE102008014176B4 (en) 2011-01-27

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