EP0047220A3 - Low-voltage protective circuit breaker with blocking lever - Google Patents

Low-voltage protective circuit breaker with blocking lever Download PDF

Info

Publication number
EP0047220A3
EP0047220A3 EP81730070A EP81730070A EP0047220A3 EP 0047220 A3 EP0047220 A3 EP 0047220A3 EP 81730070 A EP81730070 A EP 81730070A EP 81730070 A EP81730070 A EP 81730070A EP 0047220 A3 EP0047220 A3 EP 0047220A3
Authority
EP
European Patent Office
Prior art keywords
locking lever
circuit breaker
carrier
low
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.)
Granted
Application number
EP81730070A
Other languages
German (de)
Other versions
EP0047220B1 (en
EP0047220A2 (en
Inventor
Bernhard Preuss
Werner Koziolek
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6718523&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0047220(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT81730070T priority Critical patent/ATE10555T1/en
Publication of EP0047220A2 publication Critical patent/EP0047220A2/en
Publication of EP0047220A3 publication Critical patent/EP0047220A3/en
Application granted granted Critical
Publication of EP0047220B1 publication Critical patent/EP0047220B1/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • H01H71/501Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • H01H71/501Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • H01H2071/502Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker with direct contact between manual operator and welded contact structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • H01H71/52Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S200/00Electricity: circuit makers and breakers
    • Y10S200/42Contact welding considerations

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

In the low-voltage circuit breaker that has a toggle lever system connecting the actuating arm to a carrier that moves the movable contact, a locking lever is provided to prevent transfer of the operating lever handle to its "off" position if the movable contact is welded to the stationary contact. The locking lever is pivoted about a bearing support formed in the housing of the circuit breaker. The opposite end of the locking lever is connected to the handle to be pivoted by it. The locking lever has an angled-off projection that extends into the path of movement of the carrier and is positioned to engage the carrier if the latter is unable to move from its "on" position due to welding of the contacts together. When the contacts are not welded together, the locking lever enforces the toggle levers to snap through to their "off" position before the angled-off part of the locking lever comes into contact with the carrier of the movable contact.
EP81730070A 1980-08-29 1981-08-06 Low-voltage protective circuit breaker with blocking lever Expired EP0047220B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81730070T ATE10555T1 (en) 1980-08-29 1981-08-06 LOW VOLTAGE CIRCUIT BREAKER WITH LOCKING LEVER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8023509U DE8023509U1 (en) 1980-08-29 1980-08-29 Low voltage circuit breaker for locking lever
DE8023509U 1980-08-29

Publications (3)

Publication Number Publication Date
EP0047220A2 EP0047220A2 (en) 1982-03-10
EP0047220A3 true EP0047220A3 (en) 1982-09-22
EP0047220B1 EP0047220B1 (en) 1984-11-28

Family

ID=6718523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81730070A Expired EP0047220B1 (en) 1980-08-29 1981-08-06 Low-voltage protective circuit breaker with blocking lever

Country Status (5)

Country Link
US (1) US4368444A (en)
EP (1) EP0047220B1 (en)
JP (1) JPS5770645U (en)
AT (1) ATE10555T1 (en)
DE (1) DE8023509U1 (en)

Families Citing this family (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3033213C2 (en) * 1980-08-29 1982-10-21 Siemens AG, 1000 Berlin und 8000 München Low voltage circuit breaker with a locking lever
IT8223118V0 (en) * 1982-10-07 1982-10-07 Sace Spa ELECTRIC SWITCH WITH STOPPING THE CONTROL LEVER STROKE IN CASE OF WELDING THE CONTACTS.
FR2581791B1 (en) * 1985-05-13 1988-11-04 Merlin Gerin MECHANISM FOR QUICK MANUAL CLOSING OF A CURRENT-BREAKING APPARATUS
US4650944A (en) * 1985-07-18 1987-03-17 Westinghouse Electric Corp. Molded case circuit breaker with an improved operating mechanism having a pivot-transfer trip-free linkage
US4679018A (en) * 1986-01-15 1987-07-07 Westinghouse Electric Corp. Circuit breaker with shock resistant latch trip mechanism
DE3802184A1 (en) * 1988-01-26 1989-08-03 Licentia Gmbh LOW VOLTAGE SWITCH WITH LOCKING LOBS
ZA898764B (en) * 1988-12-08 1990-08-29 Westinghouse Electric Corp Electrical circuit breaker handle locking apparatus
US5200724A (en) * 1989-03-30 1993-04-06 Westinghouse Electric Corp. Electrical circuit breaker operating handle block
US4951019A (en) * 1989-03-30 1990-08-21 Westinghouse Electric Corp. Electrical circuit breaker operating handle block
US5142112A (en) * 1990-04-03 1992-08-25 Westinghouse Electric Corp. Circuit breaker positive off interlock
US5120921A (en) * 1990-09-27 1992-06-09 Siemens Energy & Automation, Inc. Circuit breaker including improved handle indication of contact position
US5213206A (en) * 1991-05-29 1993-05-25 Westinghouse Electric Corp. Circuit breaker with positive on/off interlock
US5165532A (en) * 1991-05-29 1992-11-24 Westinghouse Electric Corp. Circuit breaker with interlock for welding contacts
FR2704354B1 (en) * 1993-04-20 1995-06-23 Merlin Gerin CONTROL MECHANISM OF A MODULAR ELECTRIC CIRCUIT BREAKER.
DE9401785U1 (en) * 1994-02-03 1995-07-20 Klöckner-Moeller GmbH, 53115 Bonn Key switch with a locking mechanism
IT1292453B1 (en) 1997-07-02 1999-02-08 Aeg Niederspannungstech Gmbh ROTATING GROUP OF CONTACTS FOR HIGH FLOW SWITCHES
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US6229413B1 (en) 1999-10-19 2001-05-08 General Electric Company Support of stationary conductors for a circuit breaker
US6317018B1 (en) 1999-10-26 2001-11-13 General Electric Company Circuit breaker mechanism
US6232856B1 (en) 1999-11-02 2001-05-15 General Electric Company Magnetic shunt assembly
US6377144B1 (en) 1999-11-03 2002-04-23 General Electric Company Molded case circuit breaker base and mid-cover assembly
ES2249875T3 (en) 1999-11-03 2006-04-01 AEG NIEDERSPANNUNGSTECHNIK GMBH & CO. KG ROTARY CONTACT ARM ARRANGEMENT FOR SWITCH.
US6300586B1 (en) 1999-12-09 2001-10-09 General Electric Company Arc runner retaining feature
US6310307B1 (en) 1999-12-17 2001-10-30 General Electric Company Circuit breaker rotary contact arm arrangement
US6184761B1 (en) 1999-12-20 2001-02-06 General Electric Company Circuit breaker rotary contact arrangement
US6172584B1 (en) 1999-12-20 2001-01-09 General Electric Company Circuit breaker accessory reset system
US6215379B1 (en) 1999-12-23 2001-04-10 General Electric Company Shunt for indirectly heated bimetallic strip
US6281461B1 (en) 1999-12-27 2001-08-28 General Electric Company Circuit breaker rotor assembly having arc prevention structure
US6346869B1 (en) 1999-12-28 2002-02-12 General Electric Company Rating plug for circuit breakers
US6211758B1 (en) 2000-01-11 2001-04-03 General Electric Company Circuit breaker accessory gap control mechanism
US6239677B1 (en) 2000-02-10 2001-05-29 General Electric Company Circuit breaker thermal magnetic trip unit
US6429759B1 (en) 2000-02-14 2002-08-06 General Electric Company Split and angled contacts
US6281458B1 (en) 2000-02-24 2001-08-28 General Electric Company Circuit breaker auxiliary magnetic trip unit with pressure sensitive release
US6313425B1 (en) 2000-02-24 2001-11-06 General Electric Company Cassette assembly with rejection features
US6204743B1 (en) 2000-02-29 2001-03-20 General Electric Company Dual connector strap for a rotary contact circuit breaker
US6404314B1 (en) 2000-02-29 2002-06-11 General Electric Company Adjustable trip solenoid
US6340925B1 (en) 2000-03-01 2002-01-22 General Electric Company Circuit breaker mechanism tripping cam
US6448521B1 (en) 2000-03-01 2002-09-10 General Electric Company Blocking apparatus for circuit breaker contact structure
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US6379196B1 (en) * 2000-03-01 2002-04-30 General Electric Company Terminal connector for a circuit breaker
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US6366438B1 (en) 2000-03-06 2002-04-02 General Electric Company Circuit interrupter rotary contact arm
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US6232859B1 (en) 2000-03-15 2001-05-15 General Electric Company Auxiliary switch mounting configuration for use in a molded case circuit breaker
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US6421217B1 (en) 2000-03-16 2002-07-16 General Electric Company Circuit breaker accessory reset system
US6459059B1 (en) * 2000-03-16 2002-10-01 General Electric Company Return spring for a circuit interrupter operating mechanism
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US6388213B1 (en) 2000-03-17 2002-05-14 General Electric Company Locking device for molded case circuit breakers
FR2806548B1 (en) 2000-03-17 2002-08-23 Ge Power Controls France EXTRACTABLE MECHANISM FOR CIRCUIT BREAKERS
US6373010B1 (en) 2000-03-17 2002-04-16 General Electric Company Adjustable energy storage mechanism for a circuit breaker motor operator
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US6472620B2 (en) 2000-03-17 2002-10-29 Ge Power Controls France Sas Locking arrangement for circuit breaker draw-out mechanism
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US6373357B1 (en) * 2000-05-16 2002-04-16 General Electric Company Pressure sensitive trip mechanism for a rotary breaker
US6995640B2 (en) * 2000-05-16 2006-02-07 General Electric Company Pressure sensitive trip mechanism for circuit breakers
DE10025832B4 (en) * 2000-05-25 2006-07-06 Aeg Niederspannungstechnik Gmbh & Co Kg Selective circuit breaker with blocking element
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464040A (en) * 1967-09-21 1969-08-26 Gen Electric Compact circuit breaker construction
US4165453A (en) * 1976-08-09 1979-08-21 Societe Anonyme Dite: Unelec Switch with device to interlock the switch control if the contacts stick

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605052A (en) * 1970-01-22 1971-09-14 Gen Electric Avoidance of switching device false off handle indication
FR2360171A1 (en) * 1976-07-30 1978-02-24 Unelec CIRCUIT BREAKER CONTROL MECHANISM
DE2808609C3 (en) * 1978-02-28 1980-09-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Low voltage toggle switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464040A (en) * 1967-09-21 1969-08-26 Gen Electric Compact circuit breaker construction
US4165453A (en) * 1976-08-09 1979-08-21 Societe Anonyme Dite: Unelec Switch with device to interlock the switch control if the contacts stick

Also Published As

Publication number Publication date
US4368444A (en) 1983-01-11
DE8023509U1 (en) 1980-11-27
JPS5770645U (en) 1982-04-28
EP0047220B1 (en) 1984-11-28
ATE10555T1 (en) 1984-12-15
EP0047220A2 (en) 1982-03-10

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