EP0616349B1 - Schutzschalter, insbesondere Leitungsschutzschalter - Google Patents

Schutzschalter, insbesondere Leitungsschutzschalter Download PDF

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Publication number
EP0616349B1
EP0616349B1 EP93104530A EP93104530A EP0616349B1 EP 0616349 B1 EP0616349 B1 EP 0616349B1 EP 93104530 A EP93104530 A EP 93104530A EP 93104530 A EP93104530 A EP 93104530A EP 0616349 B1 EP0616349 B1 EP 0616349B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
release
thermal
tripping
point
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 - Lifetime
Application number
EP93104530A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0616349A1 (de
Inventor
Gunther Dipl.-Ing. Eckert (Fh)
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP93104530A priority Critical patent/EP0616349B1/de
Priority to AT93104530T priority patent/ATE138759T1/de
Priority to ES93104530T priority patent/ES2087596T3/es
Priority to DE59302752T priority patent/DE59302752D1/de
Priority to TR00065/94A priority patent/TR27583A/tr
Publication of EP0616349A1 publication Critical patent/EP0616349A1/de
Application granted granted Critical
Publication of EP0616349B1 publication Critical patent/EP0616349B1/de
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
    • H01H71/1054—Means for avoiding unauthorised release
    • 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

Definitions

  • the invention relates to a circuit breaker, in particular a circuit breaker, the switch lock working on at least one switch contact can be released by a thermal and, if appropriate, a magnetic release, for which purpose the release works on a release device by means of a release lever.
  • a circuit breaker especially circuit breakers, see e.g. B. DE-A-2 006 872.
  • the thermal release can be impaired by tolerances or by vibrations, which can be caused by impact or fall.
  • the assignment of the thermal release as an active element to the unlatching point, usually a half-wave, from which a pawl can slide when unlatching, the passive element, can be impaired by various interference parameters.
  • the entire arrangement has been accommodated between circuit boards or, on the other hand, attempts have been made to achieve suitable accommodation between the housing walls of a molded plastic housing, the circuit breaker, by means of complicated assembly and precautions. However, such an assembly is expensive.
  • the invention has for its object to improve the circuit breaker of the type described in such a way that even without circuit boards and complex assembly interference parameters can no longer significantly affect the tripping behavior of the thermal release.
  • the described task is solved by a circuit breaker according to claim 1.
  • the thermal Trigger arranged in a holder which has a freely rotatable bearing with respect to the release lever of the unlatching device.
  • the bearing lies with its fulcrum on an imaginary straight line that runs through the contact point of the thermal release on the release lever and the radius center of the contour at the contact point.
  • the radius center of the contour at the contact point is called the contour center.
  • the contour of the release lever and the geometrical location of the The points of contact of the thermal release on the release lever in an area on both sides of the intended point of contact correspond to such an extent that disturbance parameters cannot have any significant effect.
  • the insensitivity to disturbance parameters increases the closer the center of the contour and the center of rotation are. In other words, the independence from interference is greater, the closer the contour of the extension lever and the geometrical location of the contact points of the thermal release approach in a further area on both sides of the contact point.
  • the holder for the thermal release can advantageously also accommodate a magnetic release.
  • a particularly simple structure is obtained if, when a magnetic release is required, it also forms the holder for the thermal release.
  • the thermal release can be designed in the usual way as a bimetal, which acts on the release lever in the contact point during the release state. Interference parameters can have a particularly small impact if the pivot point of the bracket is designed with a particularly low tolerance and stiffness.
  • the circuit breaker according to FIG 1 has a switch lock 1 which can be released by a thermal release 2.
  • the thermal release 2 works on a unlatching device 3 by means of a release lever 4.
  • a magnetic release 5 can also work on the unlatching device 3 in a known manner, for example by means of a plunger armature 6. If the latching device 3 is unlatched by a trigger, the switch lock 1 opens a switch contact 7.
  • the thermal release 3 is arranged in a holder 8, which has a freely rotatable mounting with respect to the release lever 4, the holder 8 with its pivot point 9 lying on a straight line 10 through the contact point 11 of the thermal release 2 on the release lever 4 and the center of the radius the contour at the contact point, called contour center point 12, runs.
  • the overall structure of the magnetic release 5 also forms the holder 8 for the thermal release 3. It is advantageous if the fulcrum 9 of the holder 8 is designed to be particularly tolerant and rigid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP93104530A 1993-03-19 1993-03-19 Schutzschalter, insbesondere Leitungsschutzschalter Expired - Lifetime EP0616349B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP93104530A EP0616349B1 (de) 1993-03-19 1993-03-19 Schutzschalter, insbesondere Leitungsschutzschalter
AT93104530T ATE138759T1 (de) 1993-03-19 1993-03-19 Schutzschalter, insbesondere leitungsschutzschalter
ES93104530T ES2087596T3 (es) 1993-03-19 1993-03-19 Interruptor de proteccion, especialmente interruptor de proteccion automatico.
DE59302752T DE59302752D1 (de) 1993-03-19 1993-03-19 Schutzschalter, insbesondere Leitungsschutzschalter
TR00065/94A TR27583A (tr) 1993-03-19 1994-01-27 Kruma salteri, bilhassa hat koruma salteri.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93104530A EP0616349B1 (de) 1993-03-19 1993-03-19 Schutzschalter, insbesondere Leitungsschutzschalter

Publications (2)

Publication Number Publication Date
EP0616349A1 EP0616349A1 (de) 1994-09-21
EP0616349B1 true EP0616349B1 (de) 1996-05-29

Family

ID=8212716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104530A Expired - Lifetime EP0616349B1 (de) 1993-03-19 1993-03-19 Schutzschalter, insbesondere Leitungsschutzschalter

Country Status (5)

Country Link
EP (1) EP0616349B1 (tr)
AT (1) ATE138759T1 (tr)
DE (1) DE59302752D1 (tr)
ES (1) ES2087596T3 (tr)
TR (1) TR27583A (tr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1465967B2 (de) * 1964-12-04 1971-06-03 Licentia Patent Verwaltungs GmbH, 6000 Frankfurt Installationsselbstschalter mit einem kunststoffgehaeuse
DE2006872A1 (de) * 1970-02-14 1971-09-09 Licentia Gmbh In Kunststoff gelagerte Schalterteile
US3950714A (en) * 1974-09-18 1976-04-13 Westinghouse Electric Corporation Self-adjusting circuit breaker with rotating trip assembly
US5059933A (en) * 1990-09-14 1991-10-22 General Electric Company Molded case circuit breaker operating cradle configuration

Also Published As

Publication number Publication date
ATE138759T1 (de) 1996-06-15
ES2087596T3 (es) 1996-07-16
EP0616349A1 (de) 1994-09-21
DE59302752D1 (de) 1996-07-04
TR27583A (tr) 1995-06-13

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