GB827740A - Electric overload circuit breaker - Google Patents

Electric overload circuit breaker

Info

Publication number
GB827740A
GB827740A GB15702/56A GB1570256A GB827740A GB 827740 A GB827740 A GB 827740A GB 15702/56 A GB15702/56 A GB 15702/56A GB 1570256 A GB1570256 A GB 1570256A GB 827740 A GB827740 A GB 827740A
Authority
GB
United Kingdom
Prior art keywords
breaker
circuit
levers
lever
breakers
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
Application number
GB15702/56A
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.)
Schneider Electric USA Inc
Original Assignee
Square D Co
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
Priority claimed from US514222A external-priority patent/US3098136A/en
Application filed by Square D Co filed Critical Square D Co
Publication of GB827740A publication Critical patent/GB827740A/en
Expired legal-status Critical Current

Links

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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • 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
    • H01H71/1009—Interconnected mechanisms
    • H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole
    • 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
    • H01H71/162—Electrothermal mechanisms with bimetal element with compensation for ambient temperature
    • 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
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • 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
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • H01H71/405—Combined electrothermal and electromagnetic mechanisms in which a bimetal forms the inductor for the electromagnetic 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/524—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism the contact arm being pivoted on handle and mechanism spring acting between cradle and contact arm

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

827,740. Automatic circuit - breakers. SQUARE D CO. May 22, 1956 [June 8, 1955], No. 15702/56. Class 38 (5). A circuit-breaker enclosure has openings in its walls forming bearing-surfaces for pivotallysupporting a member which operates or is moved by the circuit-breaker trip device and which is slotted to receive a bar member for coupling to an adjacent similar circuit-breaker for unitary operation on overload. In the application to the circuit-breaker of Specification 788,044, an additional lever 70 is pivoted in the casing on its bearings 73, 74 and has a limb 76 and a spring 85 fixed in a hole 84. When the end 34 of a lever 31 is in the latched position shown, the spring 85 presses against a pin 40 thereon, but when end 34 is released by the trip assembly 6, pin 40 presses against surface 75 to rotate lever 70. This lever has a square off-set hole 81, through which it is possible to pass a rod 86 to couple-up the levers 70 of two or more similar circuit-breakers so that they move together, and the heels 77 of levers 70 will deflect their assemblies 6 to trip the other breakers on operation of any one of them. In an assembly of more than one breaker, only one spring 85 is required as it will reset all the levers 70 when it is lifted by pin 40 during the breaker resetting operation. The operating levers 35 may be connected together, for joint operation, by means of pins 87. Specifications 793,885 and 827,733 also are referred to.
GB15702/56A 1955-05-18 1956-05-22 Electric overload circuit breaker Expired GB827740A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US509135A US2902560A (en) 1955-05-18 1955-05-18 Circuit breaker
US514222A US3098136A (en) 1955-06-09 1955-06-09 Circuit breaker
US893282XA 1958-06-24 1958-06-24

Publications (1)

Publication Number Publication Date
GB827740A true GB827740A (en) 1960-02-10

Family

ID=31982228

Family Applications (4)

Application Number Title Priority Date Filing Date
GB7597/56A Expired GB827733A (en) 1955-05-18 1956-03-12 Improvements in or relating to automatic electric circuit breakers
GB15702/56A Expired GB827740A (en) 1955-05-18 1956-05-22 Electric overload circuit breaker
GB16525/56A Expired GB788044A (en) 1955-05-18 1956-05-29 Automatic electric circuit breaker
GB31479/58A Expired GB893282A (en) 1955-05-18 1958-10-02 Improvements in or relating to trip devices for automatic electric circuit breakers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB7597/56A Expired GB827733A (en) 1955-05-18 1956-03-12 Improvements in or relating to automatic electric circuit breakers

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB16525/56A Expired GB788044A (en) 1955-05-18 1956-05-29 Automatic electric circuit breaker
GB31479/58A Expired GB893282A (en) 1955-05-18 1958-10-02 Improvements in or relating to trip devices for automatic electric circuit breakers

Country Status (2)

Country Link
US (1) US2902560A (en)
GB (4) GB827733A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3081386A (en) * 1960-01-07 1963-03-12 Cutler Hammer Inc Circuit breakers
FR2712731A1 (en) * 1993-11-15 1995-05-24 Gen Electric Thermo-magnetic trip unit for circuit breaker in molded case and circuit breaker using such a unit.
GB2285890A (en) * 1994-01-21 1995-07-26 Square D Co Handle interlocks for circuit breakers

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061698A (en) * 1955-05-18 1962-10-30 Square D Co Spring operated mechanism for electric circuit breakers
US3178535A (en) * 1957-04-12 1965-04-13 Westinghouse Electric Corp Automatic circuit breaker with improved bimetallic and electromagnetic trip device
US3110786A (en) * 1959-11-03 1963-11-12 Westinghouse Electric Corp Electromagnetic thermal current circuit breaker
US3088008A (en) * 1959-11-03 1963-04-30 Westinghouse Electric Corp Circuit breaker
US3133999A (en) * 1960-10-14 1964-05-19 Square D Co Electric circuit breaker having two operating mechanisms arranged in tandem relationship and having quickconnect plug-in type load terminals
US3147353A (en) * 1960-12-23 1964-09-01 Ite Circuit Breaker Ltd Contact weld breaking means
US3156796A (en) * 1961-07-31 1964-11-10 Ite Circuit Breaker Ltd High sensitivity thermomagnetic circuit breaker
US3213327A (en) * 1962-04-03 1965-10-19 Fed Pacific Electric Co Circuit breaker and panelboard
GB1053655A (en) * 1962-05-21
GB1031971A (en) * 1964-03-13 1966-06-02 Square D Co Improvements in or relating to electric circuit breakers
US3278707A (en) * 1964-10-22 1966-10-11 Gen Electric Circuit breaker with ambient-temperature compensating means
US3287522A (en) * 1965-06-28 1966-11-22 Gen Electric Circuit breaker with spring-biased toggle link
US3466578A (en) * 1967-06-26 1969-09-09 Ite Imperial Corp Circuit breaker contact separation initiator
US3488610A (en) * 1967-09-21 1970-01-06 Gen Electric Circuit breaker with improved thermalmagnetic tripping mechanism
US3464040A (en) * 1967-09-21 1969-08-26 Gen Electric Compact circuit breaker construction
US3743981A (en) * 1972-09-13 1973-07-03 Ceb Ltd Circuit breaker
US3860898A (en) * 1973-09-11 1975-01-14 Westinghouse Electric Corp Circuit breaker for distribution transformer
US3832663A (en) * 1973-11-28 1974-08-27 Westinghouse Electric Corp Circuit breaker with improved frame and cradle support means
US3950715A (en) * 1974-10-29 1976-04-13 Fuchs Electrical Industries Circuit breaker with improved trip means
US4479101A (en) * 1982-07-02 1984-10-23 Siemens-Allis, Inc. Circuit breaker with self-adjusting armature
US4616199A (en) * 1984-12-21 1986-10-07 Square D Company Circuit breaker improvement to prevent setting of trip assembly
US4868529A (en) * 1988-08-24 1989-09-19 Siemens Energy & Automation, Inc. Circuit breaker armature latch with control leg
US5173674A (en) * 1992-02-25 1992-12-22 General Electric Company Thermal-magnetic trip unit with low current response
US5250918A (en) * 1992-05-05 1993-10-05 Square D Company Automatic miniature circuit breaker with Z-axis assemblage current response mechanism
JPH05342967A (en) * 1992-06-04 1993-12-24 Mitsubishi Electric Corp Circuit breaker
US5471184A (en) * 1994-07-13 1995-11-28 Eaton Corporation Circuit breaker
US7034660B2 (en) * 1999-02-26 2006-04-25 Sri International Sensor devices for structural health monitoring
US6806808B1 (en) 1999-02-26 2004-10-19 Sri International Wireless event-recording device with identification codes
US6617963B1 (en) 1999-02-26 2003-09-09 Sri International Event-recording devices with identification codes
US6801111B2 (en) * 2002-08-21 2004-10-05 Square D Company Latch for an electrical device

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2329362A (en) * 1934-04-14 1943-09-14 Westinghouse Electric & Mfg Co Circuit breaker
US2102545A (en) * 1936-05-09 1937-12-14 Trumbull Electric Mfg Co Electric switch
US2209351A (en) * 1937-07-06 1940-07-30 Colt S Mfg Co Automatic circuit breaker
US2210262A (en) * 1939-02-27 1940-08-06 Colt S Mfg Co Automatic circuit breaker
US2318085A (en) * 1940-09-19 1943-05-04 Westinghouse Electric & Mfg Co Circuit breaker
US2449486A (en) * 1945-03-15 1948-09-14 Westinghouse Electric Corp Circuit breaker
US2656432A (en) * 1945-05-07 1953-10-20 Westinghouse Electric Corp Circuit breaker
US2624816A (en) * 1945-05-09 1953-01-06 Westinghouse Electric Corp Circuit breaker
US2627563A (en) * 1950-08-16 1953-02-03 Gen Electric Electric circuit breaker
US2661414A (en) * 1951-03-09 1953-12-01 Gen Electric Electric circuit breaker
US2666114A (en) * 1951-03-24 1954-01-12 Square D Co Circuit breaker
US2678359A (en) * 1952-01-15 1954-05-11 Ite Circuit Breaker Ltd Trip mechanism of circuit breakers
US2677025A (en) * 1952-05-02 1954-04-27 Westinghouse Electric Corp Circuit breaker
US2701284A (en) * 1953-05-28 1955-02-01 Ite Circuit Breaker Ltd Latch insulation for quick break circuit breakers
US2716679A (en) * 1954-05-11 1955-08-30 Wadsworth Electric Mfg Co Circuit breaker
US2797278A (en) * 1954-10-29 1957-06-25 Westinghouse Electric Corp Circuit breaker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3081386A (en) * 1960-01-07 1963-03-12 Cutler Hammer Inc Circuit breakers
FR2712731A1 (en) * 1993-11-15 1995-05-24 Gen Electric Thermo-magnetic trip unit for circuit breaker in molded case and circuit breaker using such a unit.
GB2285890A (en) * 1994-01-21 1995-07-26 Square D Co Handle interlocks for circuit breakers
GB2285890B (en) * 1994-01-21 1998-04-15 Square D Co Improvements in and relating to circuit breakers

Also Published As

Publication number Publication date
GB827733A (en) 1960-02-10
GB788044A (en) 1957-12-18
US2902560A (en) 1959-09-01
GB893282A (en) 1962-04-04

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