EP0145946B1 - Line-protecting cut-out - Google Patents

Line-protecting cut-out Download PDF

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Publication number
EP0145946B1
EP0145946B1 EP84113575A EP84113575A EP0145946B1 EP 0145946 B1 EP0145946 B1 EP 0145946B1 EP 84113575 A EP84113575 A EP 84113575A EP 84113575 A EP84113575 A EP 84113575A EP 0145946 B1 EP0145946 B1 EP 0145946B1
Authority
EP
European Patent Office
Prior art keywords
slider
circuit
lever
breaker according
rotary part
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.)
Expired
Application number
EP84113575A
Other languages
German (de)
French (fr)
Other versions
EP0145946A1 (en
Inventor
Rolf Goehle
Volker Schmitt
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brown Boveri und Cie AG Germany filed Critical Brown Boveri und Cie AG Germany
Priority to AT84113575T priority Critical patent/ATE24067T1/en
Publication of EP0145946A1 publication Critical patent/EP0145946A1/en
Application granted granted Critical
Publication of EP0145946B1 publication Critical patent/EP0145946B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/62—Manual reset mechanisms which may be also used for manual release with means for preventing resetting while abnormal condition persists, e.g. loose handle arrangement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/128—Manual release or trip mechanisms, e.g. for test purposes

Definitions

  • the invention relates to an electrical circuit breaker according to the first part of claim 1.
  • a switch lock has become known, in which a cam is formed on the test button of a residual current circuit breaker, which engages in the switching mechanism after the test button has been pressed in and rotated, thereby preventing the switching mechanism from latching, the test button being lockable in this position is.
  • a switch position indicator is not created with this arrangement. Rather, the lock is only provided in connection with a test button on a residual current circuit breaker.
  • the object of the invention is to provide a circuit breaker of the type mentioned, in which the switch position indicator is combined with the switch-on lock.
  • both a switch-on lock which can be actuated manually from the outside and a switch position indicator are achieved by means of a component which forms a unit.
  • the first slide which acts together with the release lever and on which the rotating part acts, serves as a release lock.
  • the second slide which cooperates with the contact lever, is moved by the latter from a first position, in which it is not, to a second position, in which it is very clearly visible; in this position he sits below a window opening or, according to the invention, below the rotating part, which according to claim 12 is clearly transparent. In this visible position, the second slide indicates that the switching device is switched off, the contact pieces are separated, so that work can be carried out in the network behind the switch. If the isolating distance then complies with the regulations, that is to say is large enough, then the switching device designed according to the invention can be regarded as an isolating switch, that is to say as a switching device with isolating function.
  • the rotating part together with the first slide serves as a switch-on lock.
  • the switch-on lock can be actuated from the outside, in such a way that in a first position of the rotary part the switch-on lock is ineffective and in a second position, because then the cam engages in the path of the first slide, causing the first slide to move and thus a release movement of the release lever is hindered.
  • the mounting of the rotating part can be seen from the dependent claims 9 and 10, respectively. So that unauthorized persons cannot remove the switch-on lock, a profile is formed on the rotating part according to the characterizing feature of claim 11, which profile can only be adjusted by means of a tool that can be applied from the outside.
  • the profile is preferably a slot into which a screwdriver can be inserted.
  • the switch position indicator is no longer designed to be rotatable about an axis, but can be displaced in the guide part in accordance with the characterizing feature of claim 1.
  • the arrangement according to the invention is accommodated in a housing 10 of a circuit breaker, of which only individual parts forming or tangent to the invention are shown. Otherwise, the circuit breaker according to FIG. 1 is supplemented in the usual way by a thermal release, by further parts of the switch lock and a magnetic release in addition to an arc-quenching plate package.
  • a movable contact lever 11 is rotatably supported by means of an axis 12, at one end of which the movable contact piece 13 is attached, which interacts with a fixed contact piece 14.
  • the contact lever 11 has an extension 15 with which it is rotatably coupled to a connecting bracket 16 which is articulated at its other end via a wire bracket 17 with a switch toggle 19 pivotally mounted about a fixed axis 18.
  • the switching lock described above which includes the contact lever 11, the connecting strap 16, the wire bracket 17, the switching knob 19, a ratchet lever 40 and a release lever 27 is mounted between two boards 41 and 42.
  • the housing 10 of the circuit breaker consists of two housing shells 22 and 23, between which a guide part 20 is received and mounted in a stationary manner. How the guide part 20 is mounted. is of little importance for the invention; Appropriately, grooves or recesses are provided on the housing shells 22 and 23, into which the formations 20a and 20b, 20c and 20d engage.
  • a first slide 26 is guided in a groove (without reference numerals) in the direction of the pivoting movement of the switching knob 19, which projects beyond the guide part 20 to the right and interacts with the release lever 27, which is also mounted on the axis 18 .
  • An upwardly projecting nose 25 is formed on the first slide 26 and is concealed in FIG. 1.
  • a rotating part 21 which has an eccentrically formed cam 24 which, as can be seen in FIG. 1, engages in the range of motion of the nose 25 on the slide 26.
  • the rotating part 21 has two flange-like collars 28 and 29 which are arranged at a distance from one another and between which an annular projection 30 engages, which is formed on the two housing shells 22 and 23 on two recesses (22a, 23a) pointing radially inwards; the two housing shells 22 and 23 thus delimit a circular receiving space 31 for guiding the rotating part 21.
  • the rotating part 21 has a slot 32 so that the rotating part 21 can be rotated in the direction of arrow P.
  • the rotating part 21 is made of a clear material.
  • a second slide 33 is slidably guided on the guide part 20 in a groove, also not shown, which has a plate-shaped upper part 34 and a pin 35 attached or molded vertically thereon.
  • the pin 35 is simultaneously guided in a slot 36 in the guide part 20.
  • Fig. 3 shows the switching device in its off position.
  • the movable contact lever 11 has been pivoted clockwise about the axis 12;
  • the pin 35, and with it the upper part 34, has been displaced to the right under the clearly transparent rotating part 21 via an angular extension 37.
  • the second slide 33 has thus become visible. This suggests. that the switch is in the off position.
  • To switch on the switching knob 19 is rotated in the direction of arrow F, whereby the contact lever 11 moves counterclockwise in the switch-on position and the pin 35 and thus the slide 33 is moved into the position in which it is no longer visible and which indicates the switch-on position.
  • Fig. 1 it can be seen that the protrusions 20c and 20d (only the protrusion 20d is visible) protrude approximately into the area upwards in front of the guide part 20, which lies between the two flange-like collars 28 and 29.
  • the bulge-like region shown in FIG. 1 is the lateral shape 20d, which engages in a housing groove (not shown) on the housing shells 22 and 23. Their width coincidentally corresponds to the diameter of the recess 31.
  • the formations 20a and 20b lie in a different plane than the two formations 20c and 20d; The formations 20a and 20b lie approximately in the area in which the upper part 34 is located.
  • the guide part here has the reference number 50, but essentially corresponds in its function to the guide part 20.
  • the guide part 50 While the guide part 20 is guided in the housing, the guide part 50 (see FIGS. 5 and ff.) Is held on the circuit boards 41 of the key switch.
  • the guide part 50 has a plate-shaped basic structure 51, at one end of which fork-like fastening hooks 52 and 53 are attached.
  • These fastening hooks are arranged at a distance from one another and, as can be seen from FIG. 10, comprise two L-shaped hooks 54 and 55 shown in FIG. 11, which are integrally formed on the boards 41 and 42 and with their free leg ends 56 and 57 assign to each other. So that the fastening hooks do not slip off the leg ends 56 and 57, they have barb-like projections 60 and 61 at the ends of the fork tines 58 and 59.
  • a first extension 65 and two further extensions 66 and 67 are located on the opposite edge of the basic structure 51, the first extension 65 clearly projecting beyond the two further extensions. Between the individual extensions 65 to 67 slots 68 and 69 are provided, the function of which is explained below.
  • a display slide 70 is guided, which has an elongated, rectangular contour and in its rear region has a C-shaped profile 71 which, as can be seen from FIG. 7, completely surrounds the extension 65 .
  • an extension 71a is provided on one side of the indicator slide, on the free end of which a pin 72 is formed, the extension 71a together with the pin 72 corresponding to the pin 35 in the embodiment according to FIG. 1.
  • the extension 71a together with the pin or projection 72 engages in the path of movement of the movable contact lever 11 (see FIG.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

1. Circuit-breaker with a contact point which is formed by a moving and a fixed contact member (13, 14) attached on a contact lever (11), with a latching mechanism with a trip lever (27) for the unlatching of a latching point located in the latching mechanism, with a manual operation lever (19) and with a position indicating device which can be operated by the moving contact lever (11), characterized in that the switchgear has in the region of the manual operation lever (19) a stationary guide element (20; 50), on which are slideably arranged a first slider (26; 73) interacting with the trip lever (27), and a second slider (33, 35; 70), coupled to the moving contact lever (11) and thus indicating its position, and a manually operable rotary part (21), which acts on the first slider (26; 73) and, when turned, pushes the first slider (26; 73) against the trip lever (27) and holds it via the first slider (26; 73) in its trip position to achieve a lock-out preventing closing and, after turning back into the initial position, releases the first slider (26; 73) and thus the trip lever (27).

Description

Die Erfindung betrifft einen elektrischen Leitungsschutzschalter nach dem ersten Teil des Anspruches 1.The invention relates to an electrical circuit breaker according to the first part of claim 1.

Sie betrifft insbesondere eine Sperre gegen das unbeabsichtigte Einschalten des Leitungsschutzschalters, die nur mittels eines Werkzeuges betätigbar ist, und die Anordnung einer Schaltstellungsanzeige.In particular, it relates to a lock against unintentional switching on of the circuit breaker, which can only be operated by means of a tool, and the arrangement of a switch position indicator.

Aus der DE-B-2507497 ist eine Schaltsperre bekanntgeworden, bei der an der Prüftaste eines Fehlerstromschutzschalters ein Nocken angeformt ist, der nach Eindrücken und Verdrehen der Prüftaste in das Schaltwerk eingreift und dadurch eine Verklinkung des Schaltwerkes verhindert, wobei die Prüftaste in dieser Stellung verrastbar ist. Eine Schaltstellungsanzeige wird mit dieser Anordnung nicht geschaffen. Vielmehr ist die Sperre lediglich in Verbindung mit einer Prüftaste bei einem Fehlerstromschutzschalter vorgesehen.From DE-B-2507497 a switch lock has become known, in which a cam is formed on the test button of a residual current circuit breaker, which engages in the switching mechanism after the test button has been pressed in and rotated, thereby preventing the switching mechanism from latching, the test button being lockable in this position is. A switch position indicator is not created with this arrangement. Rather, the lock is only provided in connection with a test button on a residual current circuit breaker.

Aus der DE-B-10 59 094 ist eine Schaltstellungsanzeige bekanntgeworden, bei der ein L-förmiger Hebel in seinem Kniepunkt drehbar aufgelagert ist, wobei der eine Schenkel des L-förmigen Hebels mit dem bewegbaren Kontaktstück in Eingriff steht, wogegen am Ende des anderen Schenkels ein kreisbogenförmiger Abschnitt angeformt ist, an dem zwei Teilbereiche mit unterschiedlichen Färbungen abgeteilt sind ; dieser kreisbogenförmige Abschnitt bewegt sich hinter einem Sichtfenster, so daß je nach Durchscheinen der einen oder anderen Farbe eine Anzeige für die Stellung « Ein oder für die Stellung « Aus gegeben wird. Im Bereich des Kniepunktes besitzt der L-förmige Hebel einen Fortsatz, der mit einem Klinkenhebel zur Bildung einer Verklinkungsstelle zusammenwirkt. Im Gegensatz zu der Anordnung nach der DE-B-25 07 497 ist bei der DE-B-10 59 094 eine Einschaltsperre nicht vorhanden.From DE-B-10 59 094 a switch position indicator has become known in which an L-shaped lever is rotatably supported in its knee point, one leg of the L-shaped lever being in engagement with the movable contact piece, whereas at the end of the other Leg is formed an arcuate section on which two sections are divided with different colors; this arcuate section moves behind a viewing window, so that depending on the appearance of one or the other color, an indication for the position "on or for the position" off is given. In the area of the knee point, the L-shaped lever has an extension which interacts with a ratchet lever to form a latching point. In contrast to the arrangement according to DE-B-25 07 497, DE-B-10 59 094 does not have a switch-on lock.

Eine ähnliche Anordnung ist aus der DE-U-1771 109 bekanntgeworden. Anstatt eines L-förmigen Hebels ist ein langgestreckter Hebel vorgesehen, der mit dem bewegbaren Kontaktstück zusammenwirkt und auf diese Weise eine Schaltstellungsanzeige gibt. Eine Einschaltsperre ist auch in dem Gebrauchsmuster nicht beschrieben. Aus der DE-U-18 59 268 ist eine ähnliche Anordnung bekanntgeworden. Bei dieser Schaltstellungsanzeige ist der Anzeigehebel am Kontaktstück angebracht, so daß dieser quasi eine Verlängerung des Kontaktstückes bis hin zu einem Sichtfenster bildet. Eine von außen manuell betätigbare Einschaltsperre wird allerdings durch das Gebrauchsmuster nicht beschrieben.A similar arrangement has become known from DE-U-1771 109. Instead of an L-shaped lever, an elongated lever is provided which interacts with the movable contact piece and in this way gives a switch position indicator. A power-on lock is also not described in the utility model. A similar arrangement has become known from DE-U-18 59 268. In this switch position indicator, the indicator lever is attached to the contact piece, so that it forms an extension of the contact piece up to a viewing window. A utility lock that can be operated manually from the outside is not described by the utility model.

Aus der DE-U-70 33 859 ist eine Schaltstellungsanzeige bekanntgeworden, bei der zwischen das Schaltschloß aufnehmenden Platinen ein Drehhebel aufgelagert ist, der mit dem Kontakthebel in Verbindung steht und so mit dessen Verdrehung ebenfalls verdreht wird. Eine Einschaltsperre wird hierdurch ebenfalls nicht bewirkt.From DE-U-70 33 859 a switch position indicator has become known, in which a rotary lever is supported between the circuit board receiving the switch, which is connected to the contact lever and thus also rotated with its rotation. This also does not result in a switch-on lock.

Aufgabe der Erfindung ist es, einen Leitungsschutzschalter der eingangs genannten Art zu schaffen, bei dem die Schaltstellungsanzeige mit der Einschaltsperre kombiniert ist.The object of the invention is to provide a circuit breaker of the type mentioned, in which the switch position indicator is combined with the switch-on lock.

Diese Aufgabe wird erfindungsgemäß gelöst durch die kennzeichnenden Merkmale des Anspruches 1.This object is achieved according to the invention by the characterizing features of claim 1.

Durch die erfindungsgemäße Ausgestaltung wird im Bereich des Handbetätigungshebels, der nach vorne zum Beobachter hinweist, sowohl eine manuell von außen betätigbare Einschaltsperre als auch eine Schaltstellungsanzeige mittels eines eine Einheit bildenden Bauelementes erzielt.As a result of the configuration according to the invention, in the area of the manual actuation lever, which points towards the observer, both a switch-on lock which can be actuated manually from the outside and a switch position indicator are achieved by means of a component which forms a unit.

Der erste Schieber, der mit dem Auslösehebel zusammen und auf den das Drehteil einwirkt, dient als Auslösesperre. Der zweite Schieber, der mit dem Kontakthebel zusammenwirkt, wird von diesem aus einer ersten Stellung, in der er nicht, in eine zweite Stellung, in der er sehr wohl sichtbar ist, verschoben ; in dieser Stellung sitzt er unterhalb einer Fensteröffnung bzw. erfindungsgemäß unterhalb des Drehteils, das gemäß Anspruch 12 klar durchsichtig ist. In dieser sichtbaren Stellung zeigt der zweite Schieber an, daß das Schaltgerät ausgeschaltet ist, die Kontaktstücke getrennt sind, so daß im Netz hinter dem Schalter gearbeitet werden kann. Wenn die Trennstrecke dann den Vorschriften entspricht, also groß genug ist, dann kann das erfindungsgemäß ausgestaltete Schaltgerät als Trennschalter, also als Schaltgerät mit Trennfunktion angesehen werden.The first slide, which acts together with the release lever and on which the rotating part acts, serves as a release lock. The second slide, which cooperates with the contact lever, is moved by the latter from a first position, in which it is not, to a second position, in which it is very clearly visible; in this position he sits below a window opening or, according to the invention, below the rotating part, which according to claim 12 is clearly transparent. In this visible position, the second slide indicates that the switching device is switched off, the contact pieces are separated, so that work can be carried out in the network behind the switch. If the isolating distance then complies with the regulations, that is to say is large enough, then the switching device designed according to the invention can be regarded as an isolating switch, that is to say as a switching device with isolating function.

Gemäß den kennzeichnenden Merkmalen dient das Drehteil zusammen mit dem ersten Schieber als Einschaltsperre.According to the characteristic features, the rotating part together with the first slide serves as a switch-on lock.

Über das Drehteil ist die Einschaltsperre von außen betätigbar, dergestalt, daß in einer ersten Stellung des Drehteils die Einschaltsperre unwirksam und in einer zweiten Stellung wirksam ist, weil dann der Nocken in die Bahn des ersten Schiebers eingreift, wodurch ein Verschieben des ersten Schiebers und damit eine Auslösebewegung des Auslösehebels behindert ist.Via the rotary part, the switch-on lock can be actuated from the outside, in such a way that in a first position of the rotary part the switch-on lock is ineffective and in a second position, because then the cam engages in the path of the first slide, causing the first slide to move and thus a release movement of the release lever is hindered.

Die Halterung des Drehteiles ist aus den abhängigen Ansprüchen 9 bzw. 10 zu ersehen. Damit Unbefugte die Einschaltsperre nicht beseitigen können, ist gemäß kennzeichnendem Merkmal des Anspruches 11 am Drehteil ein Profil angeformt, das nur mittels eines von außen ansetzbaren Werkzeuges verstellt werden kann. Vorzugsweise ist das Profil ein Schlitz, in den ein Schraubendreher einfügbar ist.The mounting of the rotating part can be seen from the dependent claims 9 and 10, respectively. So that unauthorized persons cannot remove the switch-on lock, a profile is formed on the rotating part according to the characterizing feature of claim 11, which profile can only be adjusted by means of a tool that can be applied from the outside. The profile is preferably a slot into which a screwdriver can be inserted.

Im Gegensatz zu den bekannten Einrichtungen wird die Schaltstellungsanzeige nicht mehr um eine Achse drehbar ausgeführt, sondern im Führungsteil gemäß kennzeichnendem Merkmal des Anspruches 1 verschiebbar.In contrast to the known devices, the switch position indicator is no longer designed to be rotatable about an axis, but can be displaced in the guide part in accordance with the characterizing feature of claim 1.

Weitere Ausgestaltungen der Erfindung sind den weiteren abhängigen Ansprüchen zu entnehmen.Further refinements of the invention can be found in the further dependent claims.

Anhand der Zeichnung, in der ein Ausführungsbeispiel der Erfindung dargestellt ist, soll die Erfindung näher erläutert und beschrieben werden.The invention will be explained and described in more detail with reference to the drawing, in which an embodiment of the invention is shown will.

Es zeigt :

  • Figur 1 eine Seitenansicht der erfindungsgemäßen Anordnung,
  • Figur 2 eine Aufsicht auf die Anordnung gemäß Fig. 1, in Einschaltstellung,
  • Figur 3 die Anordnung gemäß Fig. 1 und 2 in Ausschaltstellung,
  • Figur 4 eine Aufsicht auf die Anordnung gemäß Fig. 3, in Ausschaltstellung,
  • Figur 5 eine Aufsicht auf eine weitere Ausgestaltung der erfindungsgemäßen Anordnung,
  • Figur 6 eine Aufsicht auf die Ausführung Fig.5 gemäß Pfeilrichtung VI,
  • Figur 7 eine Aufsicht auf die Anordnung gemäß Fig. 5 in Pfeilrichtung VII,
  • Figur 8 eine Seitenansicht des Anzeigeschiebers,
  • Figur 9 eine Seitenansicht des Verriegelungsschiebers,
  • Figur 10 eine Seitenansicht der Schaltschloßplatinen zur Halterung des Schaltschlosses für den Schalter gemäß Fig. 1 und
  • Figur 11 eine Aufsicht auf das Schaltschloß gemäß Fig. 10 in Pfeilrichtung XI.
It shows :
  • FIG. 1 shows a side view of the arrangement according to the invention,
  • FIG. 2 shows a top view of the arrangement according to FIG. 1, in the switched-on position,
  • 3 shows the arrangement according to FIGS. 1 and 2 in the off position,
  • FIG. 4 shows a top view of the arrangement according to FIG. 3, in the off position,
  • FIG. 5 shows a top view of a further embodiment of the arrangement according to the invention,
  • FIG. 6 shows a top view of the embodiment in FIG. 5 in the direction of arrow VI,
  • FIG. 7 is a top view of the arrangement according to FIG. 5 in the direction of arrow VII,
  • FIG. 8 shows a side view of the display slide,
  • FIG. 9 shows a side view of the locking slide,
  • Figure 10 is a side view of the switch lock plates for holding the switch lock for the switch according to FIG. 1 and
  • Figure 11 is a plan view of the switch lock of FIG. 10 in the direction of arrow XI.

Die erfindungsgemäße Anordnung ist in einem Gehäuse 10 eines Leitungsschutzschalters untergebracht, von dem lediglich einzelne die Erfindung bildende bzw. tangierende Teile dargestellt sind. Im übrigen wird der Leitungsschutzschalter gemäß Fig. 1 in üblicher Weise ergänzt durch einen thermischen Auslöser, durch weitere Teile des Schaltschlosses sowie einen magnetischen Auslöser nebst einem Lichtbogenlöschblechpaket.The arrangement according to the invention is accommodated in a housing 10 of a circuit breaker, of which only individual parts forming or tangent to the invention are shown. Otherwise, the circuit breaker according to FIG. 1 is supplemented in the usual way by a thermal release, by further parts of the switch lock and a magnetic release in addition to an arc-quenching plate package.

Innerhalb des Gehäuses 10 ist ein bewegbarer Kontakthebel 11 mittels einer Achse 12 drehbar aufgelagert, an dessen einem Ende das bewegbare Kontaktstück 13 angebracht ist, das mit einem fest angeordneten Kontaktstück 14 zusammenwirkt. Über die Achse 12 hinaus besitzt der Kontakthebel 11 einen Fortsatz 15, mit dem er mit einer Verbindungslasche 16 drehbar gekuppelt ist, die an ihrem anderen Ende über einen Drahtbügel 17 gelenkig mit einem um eine ortsfeste Achse 18 schwenkbar gelagerten Schaltknebel 19 angelenkt ist.Within the housing 10, a movable contact lever 11 is rotatably supported by means of an axis 12, at one end of which the movable contact piece 13 is attached, which interacts with a fixed contact piece 14. About the axis 12, the contact lever 11 has an extension 15 with which it is rotatably coupled to a connecting bracket 16 which is articulated at its other end via a wire bracket 17 with a switch toggle 19 pivotally mounted about a fixed axis 18.

Das oben beschriebene Schaltschloß, das den Kontakthebel 11, die Verbindungslasche 16, den Drahtbügel 17, den Schaltknebel 19, einen Klinkenhebel 40 und einen Auslösehebel 27 umfaßt, ist zwischen zwei Platinen 41 und 42 gelagert.The switching lock described above, which includes the contact lever 11, the connecting strap 16, the wire bracket 17, the switching knob 19, a ratchet lever 40 and a release lever 27 is mounted between two boards 41 and 42.

Das Gehäuse 10 des Leitungsschutzschalters besteht aus zwei Gehäuseschalen 22 und 23, zwischen denen ein Führungsteil 20 aufgenommen und ortsfest gelagert ist. Wie das Führungsteil 20 gelagert ist. ist für die Erfindung von geringer Bedeutung ; zweckmäßig sind an den Gehäuseschalen 22 und 23 Nuten bzw. Ausnehmungen vorgesehen, in die Ausformungen 20a und 20b, 20c und 20d eingreifen. In dem Führungsteil 20 ist in einer Nut (ohne Bezugsziffern) ein erster Schieber 26 in Richtung der Schwenkbewegung des Schaltknebels 19 verschieblich geführt, der das Führungsteil 20 nach rechts hin überragt und mit dem Auslösehebel 27, der ebenfalls an der Achse 18 gelagert ist, zusammenwirkt. An dem ersten Schieber 26 ist eine nach oben hervorragende Nase 25 angeformt, die in Fig. 1 verdeckt ist. Ebenfalls im Gehäuse 10 des Leitungsschutzschalters aufgenommen ist ein Drehteil 21, das einen exzentrisch daran angeformten Nocken 24 aufweist, der, wie aus der Fig. 1 ersichtlich, in den Bewegungsbereich der Nase 25 am Schieber 26 greift. Das Drehteil 21 besitzt zwei in Abstand zueinander angeordnete flanschartige Kragen 28 und 29, zwischen die ein ringförmiger Vorsprung 30 eingreift, der radial nach innen weisend an zwei Ausnehmungen (22a, 23a) an den beiden Gehäuseschalen 22 und 23 gebildet ist ; die beiden Gehäuseschalen 22 und 23 begrenzen somit einen kreisförmigen Aufnahmeraum 31 zur Führung des Drehteiles 21. Das Drehteil 21 besitzt einen Schlitz 32, so daß das Drehteil 21 in Pfeilrichtung P verdreht werden kann. Das Drehteil 21 ist aus klar durchsichtigem Material hergestellt.The housing 10 of the circuit breaker consists of two housing shells 22 and 23, between which a guide part 20 is received and mounted in a stationary manner. How the guide part 20 is mounted. is of little importance for the invention; Appropriately, grooves or recesses are provided on the housing shells 22 and 23, into which the formations 20a and 20b, 20c and 20d engage. In the guide part 20, a first slide 26 is guided in a groove (without reference numerals) in the direction of the pivoting movement of the switching knob 19, which projects beyond the guide part 20 to the right and interacts with the release lever 27, which is also mounted on the axis 18 . An upwardly projecting nose 25 is formed on the first slide 26 and is concealed in FIG. 1. Also accommodated in the housing 10 of the circuit breaker is a rotating part 21 which has an eccentrically formed cam 24 which, as can be seen in FIG. 1, engages in the range of motion of the nose 25 on the slide 26. The rotating part 21 has two flange-like collars 28 and 29 which are arranged at a distance from one another and between which an annular projection 30 engages, which is formed on the two housing shells 22 and 23 on two recesses (22a, 23a) pointing radially inwards; the two housing shells 22 and 23 thus delimit a circular receiving space 31 for guiding the rotating part 21. The rotating part 21 has a slot 32 so that the rotating part 21 can be rotated in the direction of arrow P. The rotating part 21 is made of a clear material.

Zusätzlich ist am Führungsteil 20 in einer ebenfalls nicht näher dargestellten Nut ein zweiter Schieber 33 verschiebbar geführt, der ein plattenförmiges Oberteil 34 und einen senkrecht daran angebrachten bzw. angeformten Zapfen 35 aufweist. Der Zapfen 35 ist gleichzeitig in einem Schlitz 36 im Führungsteil 20 geführt.In addition, a second slide 33 is slidably guided on the guide part 20 in a groove, also not shown, which has a plate-shaped upper part 34 and a pin 35 attached or molded vertically thereon. The pin 35 is simultaneously guided in a slot 36 in the guide part 20.

Die Fig. 3 zeigt das Schaltgerät in seiner Ausschaltstellung. Der bewegliche Kontakthebel 11 ist um die Achse 12 im Uhrzeigersinn verschwenkt worden ; über einen winkelförmigen Ansatz 37 ist der Zapfen 35 und mit ihm das Oberteil 34 nach rechts unter das klar durchsichtige Drehteil 21 verschoben worden. Der zweite Schieber 33 ist damit sichtbar geworden. Dies deutet an. daß der Schalter in Ausschaltstellung ist. Zum Einschalten wird der Schaltknebel 19 in Pfeilrichtung F verdreht, wodurch sich der Kontakthebel 11 entgegen dem Uhrzeigersinn in Einschaltstellung bewegt und der Zapfen 35 und damit der Schieber 33 in die Stellung bewegt wird, in der er nicht mehr sichtbar ist und die die Einschaltstellung anzeigt.Fig. 3 shows the switching device in its off position. The movable contact lever 11 has been pivoted clockwise about the axis 12; The pin 35, and with it the upper part 34, has been displaced to the right under the clearly transparent rotating part 21 via an angular extension 37. The second slide 33 has thus become visible. This suggests. that the switch is in the off position. To switch on the switching knob 19 is rotated in the direction of arrow F, whereby the contact lever 11 moves counterclockwise in the switch-on position and the pin 35 and thus the slide 33 is moved into the position in which it is no longer visible and which indicates the switch-on position.

In der Stellung gemäß Fig. 4 ist das Drehteil in Pfeilrichtung P verdreht worden, dergestalt, daß der in Richtung der Trennfuge der beiden Gehäuseschalen 22, 23 verlaufende Schlitz 32 schräggestellt worden ist. Damit wurde der Nocken 24 nach rechts verschoben, wodurch er unmittelbar an die Nase 25 des Schiebers 26 zum Anliegen kommt und diesen beim weiteren Verdrehen nach rechts mitnimmt. Der erste Schieber 26, der dabei mit seinem rechten, freien Ende gegen den Auslösehebel 27 anstößt, wird von dem Nocken 24 festgehalten und kann aufgrund der Stellung des Nockens 24 nicht mehr nach links verschoben werden ; das Drehteil hält somit den Schieber fest und der Schieber 26 hält die Auslöseklinke bzw. den Auslösehebel 27 in der ausgelösten Stellung fest, und eine Verschwenkung des Schaltknebels 19 in Einschaltrichtung ist nicht mehr möglich. Zur Freigabe der Einschaltsperre wird dann das Drehteil 21 wieder nach links, also entgegen dem Uhrzeigersinn verschwenkt ; dadurch erhält der erste Schieber 26 wieder seine freie Beweglichkeit.In the position shown in FIG. 4, the rotating part has been rotated in the direction of arrow P such that the slot 32 running in the direction of the parting line of the two housing shells 22, 23 has been inclined. Thus, the cam 24 has been shifted to the right, whereby it comes to rest directly on the nose 25 of the slide 26 and takes it with it when it is turned further to the right. The first slide 26, which abuts the release lever 27 with its right, free end, is held by the cam 24 and can no longer be shifted to the left due to the position of the cam 24; the rotating part thus holds the slide and the slide 26 holds the release pawl or release lever 27 in the released position, and pivoting of the switching knob 19 in the switch-on direction is no longer possible. For approval the switch-on lock, the rotating part 21 is then pivoted again to the left, ie counterclockwise; this gives the first slide 26 its freedom of movement again.

In der Fig. 1 ist ersichtlich, daß die Ausformungen 20c und 20d (nur die Ausformung 20d ist ersichtlich) annähernd in den Bereich nach oben vor dem Führungsteil 20 aus vorragen, der zwischen den beiden flanschartigen Kragen 28 und 29 liegt. Der in der Fig. 1 gezeichnete wulstartige Bereich ist die seitliche Ausformung 20d, die in eine nicht gezeigte Gehäusenut an den Gehäuseschalen 22 und 23 eingreift. Ihre Breite entspricht zufälligerweise dem Durchmesser der Ausnehmung 31. Es ist auch festzustellen, daß die Ausformungen 20a und 20b in einer anderen Ebene liegen als die beiden Ausformungen 20c und 20d ; die Ausformungen 20a und 20b liegen annähernd in dem Bereich, in dem sich das Oberteil 34 befindet.In Fig. 1 it can be seen that the protrusions 20c and 20d (only the protrusion 20d is visible) protrude approximately into the area upwards in front of the guide part 20, which lies between the two flange-like collars 28 and 29. The bulge-like region shown in FIG. 1 is the lateral shape 20d, which engages in a housing groove (not shown) on the housing shells 22 and 23. Their width coincidentally corresponds to the diameter of the recess 31. It should also be noted that the formations 20a and 20b lie in a different plane than the two formations 20c and 20d; The formations 20a and 20b lie approximately in the area in which the upper part 34 is located.

Es sei nun bezug genommen auf die Figuren 5 und folgende. Das Führungsteil besitzt hierbei die Bezugsziffer 50, entspricht aber im wesentlichen in seiner Funktion dem Führungsteil 20.Reference is now made to FIGS. 5 and the following. The guide part here has the reference number 50, but essentially corresponds in its function to the guide part 20.

Während das Führungsteil 20 im Gehäuse geführt ist, ist das Führungsteil 50 (siehe Fig. 5 und ff.) an den Platinen 41 des Schaltschlosses gehaltert. Das Führungsteil 50 besitzt eine plattenförmige Grundstruktur 51, an dessen einem Ende gabelartig Befestigungshaken 52 und 53 angebracht sind. Diese Befestigungshaken sind in Abstand zueinander angeordnet und umfassen, wie aus der Fig. 10 ersichtlich ist, zwei in der Fig. 11 gezeigte, L-förmige Haken 54 und 55, die an den Platinen 41 und 42 angeformt sind und mit ihren freien Schenkelenden 56 und 57 aufeinander zuweisen. Damit die Befestigungshaken nicht von den Schenkelenden 56 und 57 abrutschen, besitzen sie an den Enden der Gabelzinken 58 und 59 widerhakenähnliche Anformungen 60 und 61. Zwischen den beiden Befestigungshaken 52 und 53 befindet sich ein Vorsprung 62, dessen Seitenkanten in einem Abstand 63 bzw. 64 von den Befestigungshaken 52 und 53 entfernt enden.While the guide part 20 is guided in the housing, the guide part 50 (see FIGS. 5 and ff.) Is held on the circuit boards 41 of the key switch. The guide part 50 has a plate-shaped basic structure 51, at one end of which fork-like fastening hooks 52 and 53 are attached. These fastening hooks are arranged at a distance from one another and, as can be seen from FIG. 10, comprise two L-shaped hooks 54 and 55 shown in FIG. 11, which are integrally formed on the boards 41 and 42 and with their free leg ends 56 and 57 assign to each other. So that the fastening hooks do not slip off the leg ends 56 and 57, they have barb-like projections 60 and 61 at the ends of the fork tines 58 and 59. Between the two fastening hooks 52 and 53 there is a projection 62, the side edges of which are at a distance 63 and 64, respectively end away from the fastening hooks 52 and 53.

An der entgegengesetzten Kante der Grundstruktur 51 befinden sich ein erster Fortsatz 65 und zwei weitere Fortsätze 66 und 67, wobei der erste Fortsatz 65 die beiden weiteren Fortsätze deutlich überragt. Zwischen den einzelnen Fortsätzen 65 bis 67 sind Schlitze 68 und 69 vorgesehen, deren Funktion weiter unter erläutert wird.A first extension 65 and two further extensions 66 and 67 are located on the opposite edge of the basic structure 51, the first extension 65 clearly projecting beyond the two further extensions. Between the individual extensions 65 to 67 slots 68 and 69 are provided, the function of which is explained below.

An dem plattenförmigen Bauteil bzw. Führungsteil 50 ist ein Anzeigeschieber 70 geführt, der eine langgestreckte, rechteckige Kontur aufweist und in seinem hinteren Bereich ein C-förmiges Profil 71 aufweist, das, wie aus der Fig. 7 ersichtlich ist, den Fortsatz 65 vollständig umfaßt. Im Bereich des C-förmigen Profiles ist an einer Seite des Anzeigeschiebers ein Fortsatz 71a vorgesehen, an dessen freiem Ende ein Zapfen 72 angeformt ist, wobei der Fortsatz 71a zusammen mit dem Zapfen 72 dem Zapfen 35 in der Ausführung nach Fig. 1 entspricht. Der Fortsatz 71a zusammen mit dem Zapfen bzw. Ansatz 72 greift in den Bewegungsweg des beweglichen Kontakthebels 11 (siehe Fig. 1) ein, und wird von diesem unmittelbar von dem Fortsatz 65 geführt hin- und hergeschoben, so daß der Anzeigeschieber 70 aus einer ersten Stellung, in der er eine Einschaltstellung zeigt, und die am linken Ende des Fortsatzes 65 liegt, in die in der Fig. gezeigte Stellung verschoben wird (und wieder zurück), die die Schaltstellung « ausgeschaltet andeutet.On the plate-shaped component or guide part 50, a display slide 70 is guided, which has an elongated, rectangular contour and in its rear region has a C-shaped profile 71 which, as can be seen from FIG. 7, completely surrounds the extension 65 . In the area of the C-shaped profile, an extension 71a is provided on one side of the indicator slide, on the free end of which a pin 72 is formed, the extension 71a together with the pin 72 corresponding to the pin 35 in the embodiment according to FIG. 1. The extension 71a together with the pin or projection 72 engages in the path of movement of the movable contact lever 11 (see FIG. 1), and is pushed back and forth by the extension 65, so that the indicator slide 70 from a first Position in which it shows a switch-on position, and which is located on the left end of the extension 65, is shifted into the position shown in the figure (and back again), which indicates the switch position «switched off.

Neben dem Anzeigeschieber ist an dem Führungsteil 50 ein Verriegelungsschieber 73, siehe Fig.9, angeformt. Dieser Verriegelungs-. schieber besitzt einen annähernd rechteckigen Steg 74, an dem nach vorne weisend zwei in Abstand zueinander angeordnete Vorsprünge bzw. Leisten 75 und 76 angeformt sind. Die Leiste 75 befindet sich im montierten Zustand auf der einen Seite des Befestigungshakens 53, wogegen die Leiste 76 auf der anderen Seite des Befestigungshakens 53 von dem Steg 74 aus nach unten und vorne vorragt. An dem dem Vorsprung 75 entgegengesetzten Ende des Steges 74 befindet sich ein T-förmiger Ansatz 77, der in der Ausnehmung bzw. dem Schlitz 69 geführt ist und dort hin- und herschiebbar ist. Der Ansatz 77 umfaßt mit dem Vorsprung 76 den dritten Vorsprung 67 an dem Führungsteil 50. Das freie Ende der Leiste 75 besitzt eine Nase 78, die der Nase 25 des Schiebers 26 entspricht und mit dem Nocken 24 des Drehteiles 21 zusammenwirkt. Das freie Ende der Leiste 76 wirkt dann mit dem Auslösehebel 27 (siehe Fig.1) in der gleichen Weise zusammen wie der Verriegelungsschieber 26 :

  • Wenn sich der Verriegelungsschieber in der äußersten rechten Stellung (in der Fig. 5 bzw. analog in der Anordnung gemäß Fig. 1) befindet, dann verriegelt der Schieber den Auslösehebel 27 bzw. hält ihn in der ausgelösten Stellung fest, was dadurch bewirkt wird, daß das Drehteil 21 in Pfeilrichtung P verdreht ist.
In addition to the indicator slide, a locking slide 73, see FIG. 9, is formed on the guide part 50. This locking. Slider has an approximately rectangular web 74, on which two projections or strips 75 and 76, which are arranged at a distance from one another, are formed, pointing towards the front. The bar 75 is in the assembled state on one side of the fastening hook 53, whereas the bar 76 on the other side of the fastening hook 53 projects downward and forward from the web 74. At the end of the web 74 opposite the projection 75 there is a T-shaped projection 77 which is guided in the recess or the slot 69 and can be pushed back and forth there. The projection 77 comprises with the projection 76, the third projection 67 on the guide part 50. The free end of the bar 75 has a nose 78 which corresponds to the nose 25 of the slide 26 and cooperates with the cam 24 of the rotating part 21. The free end of the bar 76 then interacts with the release lever 27 (see FIG. 1) in the same way as the locking slide 26:
  • If the locking slide is in the extreme right position (in FIG. 5 or analogously in the arrangement according to FIG. 1), then the slide locks the release lever 27 or holds it in the released position, which is caused by that the rotating part 21 is rotated in the direction of arrow P.

Der Unterschied zwischen der Anordnung gemäß den Figuren 1 bis 4 und der der Figuren 5 bis 11 besteht im wesentlichen darin, daß das Führungsteil 20 am Gehäuse des Schaltgerätes und das Führungsteil 50 über die beiden Befestigungshaken 52 und 53 an den Platinen 41 und 42 des Schaltschlosses befestigt ist. Darüber hinaus bestehen auch geringfügige Unterschiede in der konstruktiven Ausführung einerseits des Anzeigeschiebers und andererseits des Verriegelungsschiebers. Die Wirkungsweise und der prinzipielle Aufbau ist identisch.The difference between the arrangement according to Figures 1 to 4 and that of Figures 5 to 11 is essentially that the guide member 20 on the housing of the switching device and the guide member 50 via the two fastening hooks 52 and 53 on the circuit boards 41 and 42 of the key switch is attached. In addition, there are also slight differences in the design on the one hand of the indicator slide and on the other hand of the locking slide. The mode of operation and the basic structure are identical.

Claims (13)

1. Circuit-breaker with a contact point which is formed by a moving and a fixed contact member (13, 14) attached on a contact lever (11), with a latching mechanism with a trip lever (27) for the unlatching of a latching point located in the latching mechanism, with a manual operation lever (19) and with a position indicating device which can be operated by the moving contact lever (11), characterized in that the switchgear has in the region of the manual operation lever (19) a stationary guide element (20 ; 50), on which are slideably arranged a first slider (26 ; 73) interacting with the trip lever (27), and a second slider (33, 35 ; 70), coupled to the moving contact lever (11) and thus indicating its position, and a manually operable rotary part (21), which acts on the first slider (26 ; 73) and, when turned, pushes the first slider (26 ; 73) against the trip lever (27) and holds it via the first slider (26 ; 73) in its trip position to achieve a lock-out preventing closing and, after turning back into the initial position, releases the first slider (26 ; 73) and thus the trip lever (27).
2. Circuit-breaker according to Claim 1, characterized in that the guide element (20) is attached to the housing (10).
3. Circuit-breaker according to Claim 1, characterized in that the guide element (50) is held on plates (41, 42) embracing the latching mechanism by means of fastening hooks (52, 53).
4. Circuit-breaker according to one of Claims 1 to 3, characterized in that the second slider (33, 35 ; 70) has a guide plate (34), guided in the guide element (20), and a pin (35 ; 72), integrally formed on the guide plate, running perpendicular to it and engaging in the path of movement of the moving contact lever (11).
5. Circuit-breaker according to Claim 3, characterized in that an extension (65) is integrally formed on the guide element (50) and is encompassed by a C-shaped profile section (71) integrally formed on the second slider (70) to guide said extension.
6. Circuit-breaker according to one of the preceding claims, characterized in that the guide element (50) is provided with a slit (69), into which a T-shaped web (77) on the first slider engages and is guided therein.
7. Circuit-breaker according to one of Claims 1 to 6, characterized in that a further projection (76) is integrally formed on the first slider (73) and projects downward laterally alongside the guide element (50) and perpendicular to it, extending beyond the free ends of the fastening hook (52, 53), so that the free end of the projection (76) can be brought into connection with the trip lever (27).
8. Circuit-breaker according to one of the preceding claims, characterized in that a cam (24) is integrally formed eccentrically on the rotary part (21) and protrudes into the path of a lug (25 ; 78) on the first slider (26 ; 73) in such a manner that the cam holds the slider, and thus the trip lever, in the opening position, depending on the position of the rotary part (21).
9. Circuit-breaker according to Claim 8, characterized in that the rotary part (21) is formed with two annular spaced apart flanges (28, 29), a collar-shaped housing projection (30) engaging between the flanges for its guidance.
10. Circuit-breaker according to Claim 9, characterized in that the rotary part (21) is rotatably mounted in a recess (31) formed between two housing parts.
11. Circuit-breaker according to one of Claims 8 to 10, characterized in that a profile (32) is integrally formed on the rotary part (21) and is adapted to a tool to be attached from the outside for adjustment of the rotary part (21).
12. Circuit-breaker according to one of the preceding claims, characterized in that the rotary part (21) protrudes at least partially from the housing and consists of clearly transparent material.
13. Circuit-breaker according to one of Claims 6 to 8 and 12, characterized in that the second slider (33, 35 ; 70) is located in the « switch open position underneath, i. e. in the range of projection, of the rotary part (21) and is visible from the outside through the rotary part (21).
EP84113575A 1983-11-24 1984-11-10 Line-protecting cut-out Expired EP0145946B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84113575T ATE24067T1 (en) 1983-11-24 1984-11-10 CIRCUIT BREAKER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3342468 1983-11-24
DE19833342468 DE3342468A1 (en) 1983-11-24 1983-11-24 ELECTRICAL SWITCHGEAR

Publications (2)

Publication Number Publication Date
EP0145946A1 EP0145946A1 (en) 1985-06-26
EP0145946B1 true EP0145946B1 (en) 1986-12-03

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Family Applications (1)

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EP84113575A Expired EP0145946B1 (en) 1983-11-24 1984-11-10 Line-protecting cut-out

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EP (1) EP0145946B1 (en)
AT (1) ATE24067T1 (en)
DE (2) DE3342468A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735415A1 (en) * 1997-08-14 1999-02-18 Siemens Ag Switching mechanism for a circuit breaker
FR2785444B1 (en) 1998-10-30 2000-12-15 Schneider Electric Ind Sa SWITCHING APPARATUS COMPRISING A MECHANICAL DISPLAY DEVICE WITH THREE POSITIONS
DE102008049195A1 (en) * 2008-09-26 2010-06-02 Siemens Aktiengesellschaft Shaft sealing for use in steam turbine, has sealing rings fixed at external housing and sealing ring contact at cylinder bearing surfaces of rotor shaft, so that sealing projection touches on surfaces when rotor shaft rotates in housing
DE102010015825B4 (en) * 2010-04-20 2012-10-18 Abb Ag Electrical service switching device with a switch position indicator

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Publication number Priority date Publication date Assignee Title
BE420803A (en) * 1936-04-02
US2685011A (en) * 1948-06-10 1954-07-27 Wadsworth Electric Mfg Co Electric circuit breaker
GB690495A (en) * 1950-06-15 1953-04-22 Bernard Andre Vuille Improvements in indicating devices for remotely controlled electrical apparatus
DE1059094B (en) * 1957-10-04 1959-06-11 Voigt & Haeffner Ag Multipole circuit breaker, especially installation circuit breaker
DE1771109U (en) * 1958-04-10 1958-07-31 Stotz Kontakt Gmbh INSTALLATION SWITCH WITH DISPLAY DEVICE.
FR1446225A (en) * 1965-09-06 1966-07-15 Gardy Particip App Over-current differential action circuit breaker
CH415809A (en) * 1966-01-13 1966-06-30 Gardy Particip App Overcurrent and differential action circuit breaker
GB1251718A (en) * 1968-03-15 1971-10-27
CH517367A (en) * 1970-04-02 1971-12-31 Bbc Brown Boveri & Cie Control button with signal part and use of the same
DE7033859U (en) * 1970-09-11 1971-01-21 Bbc Brown Boveri & Cie INSTALLATION SWITCH WITH CONTACT POSITION INDICATOR.
US3657672A (en) * 1970-09-24 1972-04-18 Westinghouse Electric Corp Circuit breaker with manual trip structure
US3826951A (en) * 1973-01-30 1974-07-30 Westinghouse Electric Corp Circuit breaker with replaceable rating adjuster and interlock means
US3852694A (en) * 1973-12-26 1974-12-03 Ite Imperial Corp Overload relay with fast acting bimetal on high current
DE2507497C3 (en) * 1975-02-21 1978-05-18 Brown, Boveri & Cie Ag, 6800 Mannheim Residual current circuit breaker with switching mechanism and test button
IT1137121B (en) * 1981-04-02 1986-09-03 Sace Spa ELECTRIC SWITCH, PARTICULARLY CURRENT LIMITER
DE8115676U1 (en) * 1981-05-26 1982-02-11 Meinersen, Holger, 2800 Bremen Slider with contact set on the fuse box to cover the rocker arm on the fuse element for the flashing display of the manually switched off fuse elements, including a flashing light field labeled "DO NOT SWITCH ON"

Also Published As

Publication number Publication date
DE3461576D1 (en) 1987-01-15
ATE24067T1 (en) 1986-12-15
EP0145946A1 (en) 1985-06-26
DE3342468A1 (en) 1985-06-05

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