EP1073083A2 - Electromagnetic trip device - Google Patents

Electromagnetic trip device Download PDF

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Publication number
EP1073083A2
EP1073083A2 EP00115256A EP00115256A EP1073083A2 EP 1073083 A2 EP1073083 A2 EP 1073083A2 EP 00115256 A EP00115256 A EP 00115256A EP 00115256 A EP00115256 A EP 00115256A EP 1073083 A2 EP1073083 A2 EP 1073083A2
Authority
EP
European Patent Office
Prior art keywords
armature
spring
coil
anchor
trigger according
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.)
Granted
Application number
EP00115256A
Other languages
German (de)
French (fr)
Other versions
EP1073083A3 (en
EP1073083B1 (en
Inventor
Corell Dipl.-Ing. Göbel
Guido Dipl.-Ing. Niewöhner
Ralf Dipl.-Ing. Müller
Georgi Dipl.-Ing. Cwetanski
Jürgen Dipl.-Ing. Hauk
Jörg Ing. Stamm
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.)
ABB Patent GmbH
Original Assignee
ABB Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP1073083A2 publication Critical patent/EP1073083A2/en
Publication of EP1073083A3 publication Critical patent/EP1073083A3/en
Application granted granted Critical
Publication of EP1073083B1 publication Critical patent/EP1073083B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • the invention relates to an electromagnetic trigger according to the preamble of Claim 1.
  • An electromagnetic release of a motor protection switch usually consists of a yoke, a bobbin of a coil, an armature and a shackle spring.
  • the current flows through the coil, which is monitored by the switching device and exerts a magnetic force on the armature, which is guided in the coil body.
  • the shackle spring By means of the shackle spring, the armature is prevented from moving even with small currents sets in motion. Only when the magnetic force on the anchor, the counterforce of the If the cage spring exceeds what is the case with a certain overcurrent, the anchor becomes pulled into the coil.
  • This movement of the armature is in a motor protection switch usually used to connect the contact bridge of the switchgear directly to open and to unlatch the key switch, in the latter case a permanent opening of the contact is achieved, whereas in the former case the contact bridge returns to the closed position after a short time.
  • the shackle spring is designed as a leg spring.
  • One leg of the spring is supported on the bobbin, whereas the other engages in an annular groove in the anchor.
  • the armature moves into the coil body one leg of the spring is moved in the same direction, which causes the ankle spring to bend in a direction perpendicular to the first movement moves. This bend then presses a slide that finally the switch lock is released.
  • the shackle spring is complicated and in the second case is one high number of parts available.
  • the object of the invention is an electromagnetic release of the aforementioned To create art that consists of a few simple parts and beyond enables easy assembly.
  • the armature then has at its end protruding from the coil in a manner known per se Way a circumferential groove in which the end of the coil spring under pressure intervenes and ties the armature up to a certain value of an overcurrent.
  • the turn of the cage spring facing the anchor is preferably deformed in such a way that that it engages positively in the groove.
  • This deformation can then be used even further in such a way that it is radial Forms the lead when tightening the anchor on a latching point of the Switching device opens to unlatch it.
  • the partial housing 10 is of two parallel side walls 11 and 12 bounded and has partitions 13 and 14 through the chambers 15, 16 and 17 are formed, in which an electromagnetic release and Like. Are, the structure of the electromagnetic release with reference to FIG. 2nd and 3 will be described.
  • each of the two side walls 11 and 12 there is a bearing 18 and 19 for one Swivel shaft 20, on which arms 21, 22 and 23 are formed, with the in no closer as shown, a latching point can be opened in a switch lock can.
  • an electromagnetic trigger 30 with a yoke 31, which is approximately one U-shape with two legs 32 and 33 forms; perpendicular to the two parallel ones Legs 32 has a coil 34 which surrounds an armature 35.
  • the anchor 35 has its end protruding from the coil 34 has a circumferential groove 36, whereby a Mushroom head 37 is formed.
  • the armature 35 is surrounded by a shackle spring 38, which is shown in more detail in FIG. 2 is. It comprises a number of circular, helically associated turns 39, whose last turn 40 is oval-shaped and has two legs 41 and 42, that run perpendicular to the spring axis and span a plane that also is perpendicular to the axis.
  • the turn 40 with the two legs 41 and 42 forms a protrusion 43 that radially surrounds the coil spring 38 towered over.
  • the distance D between the two legs 42, 42 is such that the two Lather legs 41, 42 into the interior of groove 36; it corresponds approximately to the inside diameter the groove 36.
  • the spring 38 has a form-fitting end anchor 35 is connected; with its end facing the coil 34 lies on the yoke web or yoke leg 32. As soon as the armature 35 inside the coil 34 is drawn in, with a certain tightening force at a certain overcurrent required and must be exceeded, then the spring 38 is compressed by the mushroom 37.
  • Extensions 24, 25 and 26 are integrally formed on the arms 21, 22 and 23. On the extension 24 pushes the projection 43 when tightening the armature, causing the shaft 20 in a clockwise direction is pivoted and so opens a switch lock, not shown.
  • Fig. 1 only a magnet system is shown; the two chambers 16 and 17 also have such electromagnetic triggers.
  • Fig. 3 shows that the yoke web or yoke leg 32 from a guide housing 44 is surrounded, on which a rod 45 is formed, which is parallel to the anchor axis in The armature 35 protrudes in the direction not triggered.
  • the free end of the Rod 45 has a nose 46 which is used for assembly to guide and hold the Spring 38 and thus also for guiding and holding the armature 35 during the Assembly serves.
  • Fig. 1 Observer facing upwards, another housing part on the armature 35th press a certain amount into the coil with the tether spring.

Abstract

An electromagnetic actuator for an electrical switching device has a yoke (31), a coil (34) and an armature (35). When excited the unit opens the power carrying contacts. The end of the actuator armature has a coil spring (38) that is fixed in a groove (36) and defines a specific overload switching point.

Description

Die Erfindung betrifft einen elektromagnetischen Auslöser nach dem Oberbegriff des Anspruches 1.The invention relates to an electromagnetic trigger according to the preamble of Claim 1.

Ein elektromagnetischer Auslöser eines Motorschutzschalters besteht in der Regel aus einem Joch, einem Spulenkörper einer Spule, einem Anker sowie einer Fesselfeder. Die Spule wird von dem Strom durchflossen, der durch das Schaltgerät überwacht wird und übt auf den Anker, der im Spulenkörper geführt ist, eine magnetische Kraft aus. Mittels der Fesselfeder wird verhindert, daß sich der Anker bereits bei kleinen Strömen in Bewegung setzt. Erst wenn die magnetische Kraft auf den Anker, die Gegenkraft der Fesselfeder übersteigt, was bei einem bestimmten Überstrom der Fall ist, wird der Anker in die Spule hineingezogen. Diese Bewegung des Ankers wird in einem Motorschutzschalter in der Regel dazu benutzt, um die Kontaktbrücke des Schaltgerätes unmittelbar zu öffnen und um das Schaltschloß zu entklinken, wobei in letzterem Fall eine dauerhafte Öffnung des Kontaktes erreicht wird, wogegen im ersteren Fall die Kontaktbrücke nach kurzer Zeit wieder in Schließstellung zurückgeht. An electromagnetic release of a motor protection switch usually consists of a yoke, a bobbin of a coil, an armature and a shackle spring. The current flows through the coil, which is monitored by the switching device and exerts a magnetic force on the armature, which is guided in the coil body. By means of the shackle spring, the armature is prevented from moving even with small currents sets in motion. Only when the magnetic force on the anchor, the counterforce of the If the cage spring exceeds what is the case with a certain overcurrent, the anchor becomes pulled into the coil. This movement of the armature is in a motor protection switch usually used to connect the contact bridge of the switchgear directly to open and to unlatch the key switch, in the latter case a permanent opening of the contact is achieved, whereas in the former case the contact bridge returns to the closed position after a short time.

Um die Bewegung des Ankers auf das Schaltschloß zu übertragen und letztlich eine Entklinkung des Schaltschlosses zu erreichen, sind mehrere Ausführungen bekannt. Bei einem elektrischen Schaltgerät mit der Bezeichnung MS 325 der Fa. ABB Schalt-und Steuerungstechnik GmbH, Heidelberg, ist die Fesselfeder als Schenkelfeder ausgebildet. Ein Schenkel der Feder stützt sich dabei auf dem Spulenkörper ab, wogegen der andere in eine ringförmige Nut im Anker greift. Bewegt sich der Anker in den Spulenkörper hinein, so wird auch der eine Schenkel der Feder in die gleich Richtung bewegt, wodurch sich eine Abwinklung der Fesselfeder in eine Richtung senkrecht zur ersten Bewegung bewegt. Diese Abwinklung drückt dann auf einen Schieber, der schließlich das Schaltschloß entklinkt.To transfer the movement of the armature to the key switch and ultimately one To achieve unlatching of the key switch, several designs are known. In the case of an electrical switching device with the designation MS 325 from ABB Schalt-und Steuerungstechnik GmbH, Heidelberg, the shackle spring is designed as a leg spring. One leg of the spring is supported on the bobbin, whereas the other engages in an annular groove in the anchor. The armature moves into the coil body one leg of the spring is moved in the same direction, which causes the ankle spring to bend in a direction perpendicular to the first movement moves. This bend then presses a slide that finally the switch lock is released.

Eine andere Möglkichkeit, die in der EP 0 501 844 B1 beschrieben ist, sieht vor, daß ein Hebel, der in seiner Mitte drehbar im Gehäuse des Schaltgerätes oder im Spulenkörper gelagert ist, mit seinem Ende in eine Nut im Anker eingreift. Zieht der Anker an, so wird der Hebel um seinem Drehpunkt verdreht. Die Bewegung des Hebels wird durch sein anderes Ende auf einen Schieber übertragen, der das Schaltschloß entklinkt.Another possibility, which is described in EP 0 501 844 B1, provides that a lever that rotates in its center in the housing of the switching device or in the coil body is mounted, engages with its end in a groove in the anchor. Pulls the anchor so the lever is turned around its pivot point. The movement of the lever will transferred through its other end to a slide that unlatches the switch lock.

Im ersten Fall ist die Fesselfeder kompliziert aufgebaut und im zweiten Fall ist eine hohe Teileanzahl vorhanden.In the first case, the shackle spring is complicated and in the second case is one high number of parts available.

Aufgabe der Erfindung ist es, einen elektromagnetischen Auslöser der eingangs genannten Art zu schaffen, der aus wenigen einfachen Teilen besteht und darüberhinaus eine einfache Montage ermöglicht.The object of the invention is an electromagnetic release of the aforementioned To create art that consists of a few simple parts and beyond enables easy assembly.

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

Danach besitzt der Anker an seinem aus der Spule ragenden Ende in an sich bekannter Weise eine umlaufende Nut, in die das Ende der auf Druck belasteten Schraubenfeder eingreift und den Anker bis zu einem bestimmten Wert eines Überstroms fesselt. The armature then has at its end protruding from the coil in a manner known per se Way a circumferential groove in which the end of the coil spring under pressure intervenes and ties the armature up to a certain value of an overcurrent.

In bevorzugter Weise ist die dem Anker zugewandte Windung der Fesselfeder so verformt, daß sie formschlüssig in die Nut eingreift.The turn of the cage spring facing the anchor is preferably deformed in such a way that that it engages positively in the groove.

Während bei einer normalen Schraubendruckfeder die letzte Windung kreisförmig ist, ist die verformte Windung der Fesselfeder oval verformt, wobei der Abstand der beiden parallelen Abschnitte dem Innendurchmesser der Nut entspricht.While with a normal helical compression spring the last turn is circular, is the deformed turn of the tether spring oval shaped, the distance between the two parallel sections corresponds to the inner diameter of the groove.

Diese Verformung kann dann noch weiter benutzt werden, derart, daß sie einen radialen Vorspung bildet, der beim Anziehen des Ankers auf eine Verklinkungsstelle des Schaltgerätes zu dessen Entklinkung aufschlägt.This deformation can then be used even further in such a way that it is radial Forms the lead when tightening the anchor on a latching point of the Switching device opens to unlatch it.

Anhand der Zeichnung, in der ein Ausführungsbeispiel der Erfindung dargestellt ist, sollen die Erfindung sowie weitere vorteilhafte Ausgestaltung und Verbesserungen der Erfindung und weitere Vorteile näher erläutert und beschrieben werden.Using the drawing, in which an embodiment of the invention is shown, the invention and further advantageous embodiment and improvements of the Invention and other advantages are explained and described in more detail.

Es zeigen:

Fig. 1
eine Einsicht in ein Schaltgerät mit dem Anker und der Fesselfeder,
Fig. 2
eine perspektivische Ansicht der Fesselfeder allein, und
Fig. 3
eine perspektivische Ansicht auf den Auslöser mit der Fesselfeder.
Show it:
Fig. 1
an insight into a switching device with the armature and the shackle spring,
Fig. 2
a perspective view of the cuff spring alone, and
Fig. 3
a perspective view of the trigger with the shackle spring.

Die Fig. 1 zeigt einen Einblick in ein Teilgehäuse 10 eines elektrischen Schaltgerätes, hier eines Motorschutzschalters. Das Teilgehäuse 10 ist von zwei parallelen Seitenwänden 11 und 12 begrenzt und besitzt Zwischenwände 13 und 14, durch die Kammern 15, 16 und 17 gebildet sind, in denen sich ein elektromagnetischer Auslöser und dgl. befinden, wobei der Aufbau des elektromagnetischen Auslösers anhand der Fig. 2 und 3 beschrieben werden soll.1 shows an insight into a partial housing 10 of an electrical switching device, here a motor protection switch. The partial housing 10 is of two parallel side walls 11 and 12 bounded and has partitions 13 and 14 through the chambers 15, 16 and 17 are formed, in which an electromagnetic release and Like. Are, the structure of the electromagnetic release with reference to FIG. 2nd and 3 will be described.

In den beiden Seitenwänden 11 und 12 ist je eine Lagerstelle 18 und 19 für eine Schwenkwelle 20, an der Arme 21, 22 und 23 angeformt sind, mit der in nicht näher dargestellter Weise eine Verklinkungsstelle in einem Schaltschloß geöffnet werden kann.In each of the two side walls 11 and 12 there is a bearing 18 and 19 for one Swivel shaft 20, on which arms 21, 22 and 23 are formed, with the in no closer as shown, a latching point can be opened in a switch lock can.

Es sei nun auf die Fig. 3 Bezug genommen.Reference is now made to FIG. 3.

Man erkennt einen elektromagnetischen Auslöser 30 mit einem Joch 31, das etwa eine U-Form mit zwei Schenkeln 32 und 33 bildet; senkrecht zu den beiden parallelen Schenkeln 32 liegt eine Spule 34, die einen Anker 35 umgibt. Der Anker 35 besitzt an seinem aus der Spule 34 herausragenden Ende eine umlaufende Nut 36, wodurch ein Pilzkopf 37 gebildet ist.One recognizes an electromagnetic trigger 30 with a yoke 31, which is approximately one U-shape with two legs 32 and 33 forms; perpendicular to the two parallel ones Legs 32 has a coil 34 which surrounds an armature 35. The anchor 35 has its end protruding from the coil 34 has a circumferential groove 36, whereby a Mushroom head 37 is formed.

Der Anker 35 ist von einer Fesselfeder 38 umgeben, die in der Fig. 2 näher dargestellt ist. Sie umfaßt mehrere kreisförmig, schraubenförmig einander zugeordnete Windungen 39, deren letzte Windung 40 oval verformt ist und zwei Schenkel 41 und 42 aufweist, die senkrecht zur Federachse verlaufen und eine Ebene aufspannen, die ebenfalls senkrecht zu der Achse verläuft. Die Windung 40 mit den beiden Schenkeln 41 und 42 bildet einen Vorsprung 43, der radial die Umhüllende der Schraubenfeder 38 überragt. Der Abstand D der beiden Schenkeln 42, 42 ist so bemessen, daß die beiden Schenkel 41, 42 ins Innere der Nut 36 eingeifen; er entspricht etwa dem Innendurchmesser der Nut 36.The armature 35 is surrounded by a shackle spring 38, which is shown in more detail in FIG. 2 is. It comprises a number of circular, helically associated turns 39, whose last turn 40 is oval-shaped and has two legs 41 and 42, that run perpendicular to the spring axis and span a plane that also is perpendicular to the axis. The turn 40 with the two legs 41 and 42 forms a protrusion 43 that radially surrounds the coil spring 38 towered over. The distance D between the two legs 42, 42 is such that the two Lather legs 41, 42 into the interior of groove 36; it corresponds approximately to the inside diameter the groove 36.

Man erkennt aus der Fig. 3, daß die Feder 38 einererseits formschlüssig mit dem Ende des Ankers 35 verbunden ist; mit ihrem der Spule 34 zugewandten Ende legt sich auf den Jochsteg oder Jochschenkel 32 auf. Sobald der Anker 35 ins Innere der Spule 34 hineingezogen wird, wobei eine bestimmte Anzugskraft bei einem bestimmten Überstrom erforderlich und überschritten sein muß, dann wird die Feder 38 vom Pilz 37 zusammengedrückt.It can be seen from FIG. 3 that the spring 38 has a form-fitting end anchor 35 is connected; with its end facing the coil 34 lies on the yoke web or yoke leg 32. As soon as the armature 35 inside the coil 34 is drawn in, with a certain tightening force at a certain overcurrent required and must be exceeded, then the spring 38 is compressed by the mushroom 37.

An den Armen 21, 22 und 23 sind Fortsätze 24, 25 und 26 angeformt. Auf den Fortsatz 24 drückt der Vorsprung 43 beim Anziehen des Ankers, wodurch die Welle 20 im Uhrzeigersinn verschwenkt wird und so ein nicht näher dargestelltes Schaltschloß öffnet. Extensions 24, 25 and 26 are integrally formed on the arms 21, 22 and 23. On the extension 24 pushes the projection 43 when tightening the armature, causing the shaft 20 in a clockwise direction is pivoted and so opens a switch lock, not shown.

In der Fig. 1 ist lediglich ein Magnetsystem dargestellt; die beiden Kammern 16 und 17 besitzen ebenfalls derartige elektromagnetische Auslöser.In Fig. 1 only a magnet system is shown; the two chambers 16 and 17 also have such electromagnetic triggers.

Die Fig. 3 zeigt, daß der Jochsteg oder Jochschenkel 32 von einem Führungsgehäuse 44 umgeben ist, an dem eine Stange 45 angeformt ist, die parallel zur Ankerachse in Richtung nicht ausgelöste Stellung des Ankers 35 vorspringt. Das freie Ende der Stange 45 besitzt eine Nase 46, die zwecks Montage zur Führung und Halterung der Feder 38 und damit auch zur Führung und Halterung des Ankers 35 während der Montage dient. Im endgültig montierten Zustand sitzt auf der Seite, die in Fig. 1 dem Betrachter nach oben zugewandt ist, ein weiteres Gehäuseteil auf, das den Anker 35 mit der Fesselfeder ein gewisses Maß in die Spule hineindrückt.Fig. 3 shows that the yoke web or yoke leg 32 from a guide housing 44 is surrounded, on which a rod 45 is formed, which is parallel to the anchor axis in The armature 35 protrudes in the direction not triggered. The free end of the Rod 45 has a nose 46 which is used for assembly to guide and hold the Spring 38 and thus also for guiding and holding the armature 35 during the Assembly serves. In the finally assembled state sits on the side that in Fig. 1 Observer facing upwards, another housing part on the armature 35th press a certain amount into the coil with the tether spring.

Claims (4)

Elektromagnetischer Auslöser für ein elektrisches Schaltgerät, insbesondere einen Motorschutzschalter, mit einem Joch (31), einer Spule (34), einem Anker (35), der bei Auftreten eines bestimmten Überstromes eine Kontaktstelle direkt und/oder über ein Schaltschloß öffnet, und mit einer Fesselfeder (38) für den Anker (35), dadurch gekennzeichnet, daß der Anker an seinem aus der Spule (34) herausragenden Ende eine umlaufende Nut (36) aufweist, in die das Ende der auf Druck belastenden, als Schraubenfeder ausgebildeten Fesselfeder (38) eingreift und den Anker so bis zu einem bestimmten Wert des Überstromes fesselt.Electromagnetic trigger for an electrical switching device, in particular a motor protection switch, with a yoke (31), a coil (34), an armature (35), which opens a contact point directly and / or via a switch lock when a certain overcurrent occurs, and with a Restraint spring (38) for the armature (35), characterized in that the armature has at its end protruding from the coil (34) a circumferential groove (36) into which the end of the pressure spring, designed as a helical spring spring (38 ) engages and ties the armature up to a certain value of the overcurrent. Auslöser nach Anspruch 1, dadurch gekennzeichnet, daß die dem Ankerende zugewandte Windung der Fesselfeder derart verformt ist, daß sie formschlüssig in die Nut eingreift.Trigger according to claim 1, characterized in that the armature end facing turn of the shackle spring is deformed such that it positively in the Engages groove. Auslöser nach Anspruch 2, dadurch gekennzeichnet, daß die Windung derart verformt ist, daß sie einen radialen Vorsprung bildet, der beim Anziehen des Ankers auf eine Verklinkungsstelle des Ankers zu deren Entklinkung aufschlagt.Trigger according to claim 2, characterized in that the winding is such is deformed that it forms a radial projection which when the armature is tightened opens a latching point of the anchor to unlatch it. Auslöser nach einem der vorherigen Ansprüche 1 bis 3, dadurch gekennzeichnet, daß an einem Führungsgehäuse (44) eine axiale Stange (45) angebracht ist, dessen freies Ende eine Nase (46) aufweist, die in Montagestellung einen Steg des radialen Vorsprunges der Fesselfeder umfaßt und die Feder vor und während des Einbaues festhält.Trigger according to one of the preceding claims 1 to 3, characterized in that an axial rod (45) is attached to a guide housing (44), the free end of which has a nose (46) which in the assembly position has a web of the radial projection of the cage spring and the spring before and during installation holds on.
EP00115256A 1999-07-29 2000-07-14 Electromagnetic trip device Expired - Lifetime EP1073083B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19935662 1999-07-29
DE19935662A DE19935662A1 (en) 1999-07-29 1999-07-29 Electromagnetic release

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EP1073083A2 true EP1073083A2 (en) 2001-01-31
EP1073083A3 EP1073083A3 (en) 2002-08-21
EP1073083B1 EP1073083B1 (en) 2003-08-27

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1251541A1 (en) * 2001-04-21 2002-10-23 ABB PATENT GmbH Motor protection switch
DE102010005345A1 (en) 2010-01-21 2011-07-28 Abb Ag, 68309 Electric switch device, has middle component having wiring column and magnetic and heat tripping device, and locking mechanism standard component that is fixed on middle component and carries operator
US8049584B2 (en) * 2008-03-01 2011-11-01 Abb Ag Switching device
DE202015100926U1 (en) 2015-02-26 2015-03-10 Abb Technology Ag Electrical switching device in modular design

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10002773B4 (en) * 2000-01-22 2005-12-15 Abb Patent Gmbh Motor protection switch
DE102008009198A1 (en) * 2007-04-30 2008-11-06 Abb Ag Transmission shaft for a service switching device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096469B (en) * 1959-01-24 1961-01-05 Elektroinstallation Annaberg V Electromagnetic quick release device for overcurrent switches, especially small circuit breakers
EP0295162A1 (en) * 1987-06-11 1988-12-14 Hager Electro S.A. Magnetothermal release unit for circuit breaker or differential circuit breaker
EP0501844A1 (en) * 1991-02-28 1992-09-02 Schneider Electric Sa Protection circuit breaker having a thermo-magnetic sub-assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH363402A (en) * 1958-04-10 1962-07-31 Stotz Kontakt Gmbh Magnetic release with a return spring, especially for electrical self-switches

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096469B (en) * 1959-01-24 1961-01-05 Elektroinstallation Annaberg V Electromagnetic quick release device for overcurrent switches, especially small circuit breakers
EP0295162A1 (en) * 1987-06-11 1988-12-14 Hager Electro S.A. Magnetothermal release unit for circuit breaker or differential circuit breaker
EP0501844A1 (en) * 1991-02-28 1992-09-02 Schneider Electric Sa Protection circuit breaker having a thermo-magnetic sub-assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1251541A1 (en) * 2001-04-21 2002-10-23 ABB PATENT GmbH Motor protection switch
US8049584B2 (en) * 2008-03-01 2011-11-01 Abb Ag Switching device
CN101556883B (en) * 2008-03-01 2014-08-06 Abb股份有限公司 Switching device
DE102010005345A1 (en) 2010-01-21 2011-07-28 Abb Ag, 68309 Electric switch device, has middle component having wiring column and magnetic and heat tripping device, and locking mechanism standard component that is fixed on middle component and carries operator
DE102010005345B4 (en) 2010-01-21 2022-04-21 Abb Schweiz Ag Electrical switching device in modular design
DE202015100926U1 (en) 2015-02-26 2015-03-10 Abb Technology Ag Electrical switching device in modular design

Also Published As

Publication number Publication date
EP1073083A3 (en) 2002-08-21
DE19935662A1 (en) 2001-02-01
DE50003423D1 (en) 2003-10-02
EP1073083B1 (en) 2003-08-27

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