EP0849763A3 - Overcurrent trip device for an electric circuit breaker - Google Patents

Overcurrent trip device for an electric circuit breaker Download PDF

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Publication number
EP0849763A3
EP0849763A3 EP97121385A EP97121385A EP0849763A3 EP 0849763 A3 EP0849763 A3 EP 0849763A3 EP 97121385 A EP97121385 A EP 97121385A EP 97121385 A EP97121385 A EP 97121385A EP 0849763 A3 EP0849763 A3 EP 0849763A3
Authority
EP
European Patent Office
Prior art keywords
release
strip
carrier
circuit breaker
lever
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.)
Withdrawn
Application number
EP97121385A
Other languages
German (de)
French (fr)
Other versions
EP0849763A2 (en
Inventor
Volker Schmitt
Rolf Dipl.-Ing. Goehle
Klaus-Peter Dipl.-Ing. Eppe
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
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0849763A2 publication Critical patent/EP0849763A2/en
Publication of EP0849763A3 publication Critical patent/EP0849763A3/en
Withdrawn legal-status Critical Current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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • 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
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H2071/7454—Adjusting only the electrothermal mechanism with adjustable axis of transmission lever between bimetal element and trip lever

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  • Breakers (AREA)

Abstract

Die Erfindung betrifft eine Auslöseeinrichtung für einen elektrischen Installationsschalter, insbesondere für einen Leitungsschutzschalter, für Überstrom und Kurzschlußstrom, mit einem thermischen Auslöser in Form eines unter Einwirkung von Überstrom auslenkbaren Auslösestreifens, der als Thermobimetallstreifen (22) oder als Streifen aus einer Formgedächtnislegierung ausgebildet ist, der über einen Auslösehebel (31) eine Verklinkungsstelle in einem Schaltschloß zur bleibenden Ausschaltung des Installationsgerätes entklinkt und mit einer Vorrichtung zum Justieren des Auslösestreifens (22) der an einem Träger an einem Ende befestigt ist, wobei der Auslösehebel (31) an einem am Träger (24) drehbar gelagerten Zwischenhebel (26) drehbar gelagert ist, der mit einem federnden Arm (30, 36) eine Kante (35) des Trägers umfaßt. Die Kante weist mehrere Einkerbungen (38) auf, in die eine Nase (37) am Arm (36) federnd eingreift, dergestalt, daß der Zwischenhebel (26) und damit die Drehachse (27) des Auslösehebels (31) bezogen auf das Thermobimetall (22) in unterschiedlichen Stellungen einstellbar ist.

Figure 00000001
The invention relates to a tripping device for an electrical installation switch, in particular for a circuit breaker, for overcurrent and short-circuit current, with a thermal release in the form of a release strip which can be deflected under the action of overcurrent and which is designed as a bimetallic strip (22) or as a strip made of a shape memory alloy Via a release lever (31), a latching point in a key switch for permanently switching off the installation device is released and with a device for adjusting the release strip (22) which is attached to a carrier at one end, the release lever (31) being attached to one on the carrier (24 ) rotatably mounted intermediate lever (26) is rotatably mounted, which comprises an edge (35) of the carrier with a resilient arm (30, 36). The edge has a plurality of notches (38), in which a lug (37) on the arm (36) engages in a resilient manner, such that the intermediate lever (26) and thus the axis of rotation (27) of the release lever (31) refer to the thermobimetal ( 22) can be set in different positions.
Figure 00000001
EP97121385A 1996-12-20 1997-12-05 Overcurrent trip device for an electric circuit breaker Withdrawn EP0849763A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19653294 1996-12-20
DE1996153294 DE19653294A1 (en) 1996-12-20 1996-12-20 Tripping device for an electrical installation switch in the event of overcurrent

Publications (2)

Publication Number Publication Date
EP0849763A2 EP0849763A2 (en) 1998-06-24
EP0849763A3 true EP0849763A3 (en) 1999-01-20

Family

ID=7815532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121385A Withdrawn EP0849763A3 (en) 1996-12-20 1997-12-05 Overcurrent trip device for an electric circuit breaker

Country Status (2)

Country Link
EP (1) EP0849763A3 (en)
DE (1) DE19653294A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600061C (en) * 1928-02-24 1934-07-13 Schiele & Bruchsaleri Industri Calibration and setting device for thermal releases of overcurrent switches
DE2152002B1 (en) * 1971-10-19 1973-03-08 Schiele Verwaltungsgmbh ARRANGEMENT FOR TWO-POINT CALIBRATION OF A THERMAL OVERCURRENT SWITCH
FR2581243A1 (en) * 1985-04-27 1986-10-31 Licentia Gmbh Magnetic and thermal circuit breaker switch
EP0400414A2 (en) * 1989-05-27 1990-12-05 Licentia Patent-Verwaltungs-GmbH Automatic circuit breaker particularly automatic cut-out

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812934A1 (en) * 1988-04-19 1989-11-02 Sursum Elektrizitaetsgesellsch MULTI-PHASE CIRCUIT BREAKER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600061C (en) * 1928-02-24 1934-07-13 Schiele & Bruchsaleri Industri Calibration and setting device for thermal releases of overcurrent switches
DE2152002B1 (en) * 1971-10-19 1973-03-08 Schiele Verwaltungsgmbh ARRANGEMENT FOR TWO-POINT CALIBRATION OF A THERMAL OVERCURRENT SWITCH
FR2581243A1 (en) * 1985-04-27 1986-10-31 Licentia Gmbh Magnetic and thermal circuit breaker switch
EP0400414A2 (en) * 1989-05-27 1990-12-05 Licentia Patent-Verwaltungs-GmbH Automatic circuit breaker particularly automatic cut-out

Also Published As

Publication number Publication date
EP0849763A2 (en) 1998-06-24
DE19653294A1 (en) 1998-06-25

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