EP0266762A3 - Current limiting electric switching device - Google Patents

Current limiting electric switching device Download PDF

Info

Publication number
EP0266762A3
EP0266762A3 EP87116282A EP87116282A EP0266762A3 EP 0266762 A3 EP0266762 A3 EP 0266762A3 EP 87116282 A EP87116282 A EP 87116282A EP 87116282 A EP87116282 A EP 87116282A EP 0266762 A3 EP0266762 A3 EP 0266762A3
Authority
EP
European Patent Office
Prior art keywords
contact arm
catch
interact
housing
switching device
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
EP87116282A
Other languages
German (de)
Other versions
EP0266762B1 (en
EP0266762A2 (en
Inventor
Hermann Dr. Hochhaus
Helmut Dipl.-Ing. Drewes
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to AT87116282T priority Critical patent/ATE84914T1/en
Publication of EP0266762A2 publication Critical patent/EP0266762A2/en
Publication of EP0266762A3 publication Critical patent/EP0266762A3/en
Application granted granted Critical
Publication of EP0266762B1 publication Critical patent/EP0266762B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • H01H77/104—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement with a stable blow-off position

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Fuses (AREA)

Abstract

In current-limiting low-voltage circuit breakers, the contact arm is prevented from bouncing back after completion of electrodynamic opening by a catch in the partially open position. The catch, in any position depending on the opening forces, is produced by slots, teeth or inclined surfaces fitted to the moving contact arm which interact with a correspondingly designed mating piece fitted rigidly the housing or by depressions or bulges provided in the housing or switch wall which interact with a mating piece in the switching contact arm. The catch is released by the unlocked bolt and the associated movement of the contact arm about a different point of rotation, or by an applied force which is greater than the retaining force. <IMAGE>
EP87116282A 1986-11-06 1987-11-05 Current limiting electric switching device Expired - Lifetime EP0266762B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87116282T ATE84914T1 (en) 1986-11-06 1987-11-05 CURRENT-LIMITING ELECTRICAL SWITCHING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3637913 1986-11-06
DE19863637913 DE3637913A1 (en) 1986-11-06 1986-11-06 CURRENT ELECTRICAL SWITCHGEAR

Publications (3)

Publication Number Publication Date
EP0266762A2 EP0266762A2 (en) 1988-05-11
EP0266762A3 true EP0266762A3 (en) 1989-02-22
EP0266762B1 EP0266762B1 (en) 1993-01-20

Family

ID=6313357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116282A Expired - Lifetime EP0266762B1 (en) 1986-11-06 1987-11-05 Current limiting electric switching device

Country Status (3)

Country Link
EP (1) EP0266762B1 (en)
AT (1) ATE84914T1 (en)
DE (2) DE3637913A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5793270A (en) * 1996-09-03 1998-08-11 Eaton Corporation Circuit breaker with latch preventing rebound of blow open contact arm
DE102005046640B4 (en) * 2005-09-29 2007-10-18 Abb Patent Gmbh Electrical installation device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052519A (en) * 1963-04-11 1900-01-01
DE1463320A1 (en) * 1963-06-28 1969-03-27 Licentia Gmbh Auto switch
US4409573A (en) * 1981-04-23 1983-10-11 Siemens-Allis, Inc. Electromagnetically actuated anti-rebound latch

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1986601U (en) * 1963-04-11 1968-06-06 Licentia Gmbh SELF SWITCH.
US4528531A (en) * 1983-12-19 1985-07-09 Westinghouse Electric Corp. Molded case circuit breaker with improved operating mechanism
US4594567A (en) * 1984-09-28 1986-06-10 Siemens-Allis, Inc. Circuit breaker contact arm assembly having a magnetic carrier
US4608545A (en) * 1985-09-24 1986-08-26 Siemens-Allis, Inc. Movable contact arm assembly for a current limiting circuit breaker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052519A (en) * 1963-04-11 1900-01-01
DE1463320A1 (en) * 1963-06-28 1969-03-27 Licentia Gmbh Auto switch
US4409573A (en) * 1981-04-23 1983-10-11 Siemens-Allis, Inc. Electromagnetically actuated anti-rebound latch

Also Published As

Publication number Publication date
DE3637913A1 (en) 1988-05-19
DE3783719D1 (en) 1993-03-04
EP0266762B1 (en) 1993-01-20
DE3637913C2 (en) 1989-10-19
EP0266762A2 (en) 1988-05-11
ATE84914T1 (en) 1993-02-15

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