GB917661A - Improvements in automatic electric circuit breakers - Google Patents

Improvements in automatic electric circuit breakers

Info

Publication number
GB917661A
GB917661A GB16779/59A GB1677959A GB917661A GB 917661 A GB917661 A GB 917661A GB 16779/59 A GB16779/59 A GB 16779/59A GB 1677959 A GB1677959 A GB 1677959A GB 917661 A GB917661 A GB 917661A
Authority
GB
United Kingdom
Prior art keywords
armature
attracted
coil
magnetic
electric circuit
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
GB16779/59A
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.)
Heinemann Electric Co
Original Assignee
Heinemann Electric 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
Application filed by Heinemann Electric Co filed Critical Heinemann Electric Co
Publication of GB917661A publication Critical patent/GB917661A/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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2472—Electromagnetic mechanisms with rotatable armatures

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

917,661. Automatic circuit-breakers. HEINEMANN ELECTRIC CO. May 15, 1959 [Jan. 2, 1959], No. 16779/59. Class 38 (5). An automatic circuit-breaker has an overloadresponsive electromagnetic tripping device comprising a coil 34 carried by a magnetic frame 29 having a gap 46 which is substantially closed by an armature portion 64 when attracted, attraction of this portion being normally restrained by a magnetic member 70 at the opposite end of the bifurcated armature. The member 70 acts as a counterbalance and is attracted to the vertical limb 31 of the frame until the flux acting on the portion 64 has increased sufficiently to attract it, this action being assisted on small overloads by the movement of a magnetic core within the coil 34. The tripping current may be determined by bending one or both members 68 to set the unattracted position of the armature.
GB16779/59A 1959-01-02 1959-05-15 Improvements in automatic electric circuit breakers Expired GB917661A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US784794A US3079479A (en) 1959-01-02 1959-01-02 Circuit breaker

Publications (1)

Publication Number Publication Date
GB917661A true GB917661A (en) 1963-02-06

Family

ID=25133559

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16779/59A Expired GB917661A (en) 1959-01-02 1959-05-15 Improvements in automatic electric circuit breakers

Country Status (2)

Country Link
US (1) US3079479A (en)
GB (1) GB917661A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2577712B1 (en) * 1985-02-14 1988-07-15 Telemecanique Electrique PROTECTION SWITCH
US4639701A (en) * 1985-08-30 1987-01-27 Westinghouse Electric Corp. Circuit breaker with interface flux shunt trip
CN103337424B (en) * 2013-06-19 2016-01-20 邳州市国龙电器有限公司 A kind of permanent magnet releaser

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455049A (en) * 1948-11-30 Shockpkoof electromagnetic
US570212A (en) * 1896-10-27 Alexander jay wurts
US758236A (en) * 1903-08-27 1904-04-26 Harold W Chamberlain Electromagnet.
US1016833A (en) * 1908-05-07 1912-02-06 Otis Elevator Co Electric-switch-contact holder.
US1339466A (en) * 1911-02-27 1920-05-11 Gen Electric Controlling means for electric circuits
US1138677A (en) * 1912-06-14 1915-05-11 Westinghouse Electric & Mfg Co Electrically-operated switch.
US1284891A (en) * 1916-10-16 1918-11-12 William H Greenleaf Electromagnet.
GB484942A (en) * 1937-02-04 1938-05-12 Gen Electric Co Ltd Improvements in electro-magnetic relays
US2341931A (en) * 1941-04-24 1944-02-15 Gen Electric Circuit maker and breaker
US2427998A (en) * 1942-03-27 1947-09-23 Heinemann Electric Co Circuit breaker
US2344809A (en) * 1942-07-20 1944-03-21 Gen Electric Electromagnetically operated switch
US2397635A (en) * 1943-02-26 1946-04-02 Automatic Elect Lab Electromagnetic relay
US2436354A (en) * 1943-10-11 1948-02-17 Morgan Maree Jr A Electromagnet with armature
US2542835A (en) * 1947-09-27 1951-02-20 Westinghouse Electric Corp Electromagnetic contactor
US2760026A (en) * 1951-01-08 1956-08-21 Clare & Co C P Relay
US2664478A (en) * 1951-02-10 1953-12-29 Johansson Karl Lennart Electromagnetic relay
US2722650A (en) * 1951-07-27 1955-11-01 Gilbert Co A C Vibratory power supply
US2669620A (en) * 1951-11-28 1954-02-16 Westinghouse Electric Corp Electromagnetic contactor
DE1071230B (en) * 1956-02-13
US2916585A (en) * 1957-06-20 1959-12-08 David F Moyer Switch assembly

Also Published As

Publication number Publication date
US3079479A (en) 1963-02-26

Similar Documents

Publication Publication Date Title
GB1501968A (en) Automatic circuit breaker
BG104551A (en) Electromagnetic switch
GB1222733A (en) Electro-magnetic release device
GB917661A (en) Improvements in automatic electric circuit breakers
US3081387A (en) Circuit breaker
GB1132521A (en) An automatic current limiting circuit breaker
GB1295150A (en)
GB588144A (en) An electric overload protective device
GB721617A (en) Improvements in and relating to electric relays
GB1137325A (en) Improvements in electrical circuit breakers
GB906554A (en) Electrical relay with armature contacts arranged in a sealed protective tube
GB965037A (en) Electric circuit breakers
GB983303A (en) Electrical relays
GB949283A (en) Improved electric circuit breakers
GB617625A (en) Improvements in or relating to electric circuit breakers
ES472136A2 (en) Electro-magnetic relay with first and second spring biasing means
GB1182692A (en) Improvements in or relating to Electromagnetic Relays
GB1009899A (en) Improvements in or relating to electromagnetic tripping devices
GB1459298A (en) Electric circuit breakers
GB1373525A (en) Electrical earth leakage circuit breakers
GB360843A (en) Improvements in and relating to overload thermally-operating circuit breakers
ES463849A1 (en) Circuit breaker polarised differential trip - has several coils wound on magnetic circuit to generate differential flux of specified direction
GB1039081A (en) An improved electrical circuit breaker
GB601088A (en) Improvements in and relating to overload relays
GB1168090A (en) Micro-Miniature Relay