GB1162177A - Automatic Electric Circuit Breaker - Google Patents

Automatic Electric Circuit Breaker

Info

Publication number
GB1162177A
GB1162177A GB49691/66A GB4969166A GB1162177A GB 1162177 A GB1162177 A GB 1162177A GB 49691/66 A GB49691/66 A GB 49691/66A GB 4969166 A GB4969166 A GB 4969166A GB 1162177 A GB1162177 A GB 1162177A
Authority
GB
United Kingdom
Prior art keywords
coil
breaker
plunger
contacts
series
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
GB49691/66A
Inventor
John Spencer Hall
Peter Edward George Carpenter
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
Application filed by Square D Co filed Critical Square D Co
Priority to GB49691/66A priority Critical patent/GB1162177A/en
Priority to US677535A priority patent/US3467920A/en
Publication of GB1162177A publication Critical patent/GB1162177A/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
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • H01H71/402—Combined electrothermal and electromagnetic mechanisms in which the thermal mechanism influences the magnetic circuit of the electromagnetic mechanism

Landscapes

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

Abstract

1,162,177. Automatic circuit breakers. SQUARE D CO. 27 Oct., 1967 [5 Nov., 1966], No. 49691/66. Heading H1N. In a circuit-breaker of the kind comprising a pivoted releasably latched trip lever 40 and a pivoted latch 44 within a moulded case 20, the electromagnetic tripping device 56 comprises a coil 67 in series with the contacts 28, 30 and a plunder 60 retractable into the coil when a predetermined overload current flows. The outer end of plunger 60 is circumferentially grooved, 60b, to receive the end of a bent-over part 45 of the latch 44. A bimetal element 70 in series with the contacts is arranged to move the plunger 60 into the coil when sufficiently heated by a small prolonged overcurrent. For a breaker of low rating the coil 67 may be of nickel-chromium wire to provide extra heating to the bimetal 70.
GB49691/66A 1966-11-05 1966-11-05 Automatic Electric Circuit Breaker Expired GB1162177A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB49691/66A GB1162177A (en) 1966-11-05 1966-11-05 Automatic Electric Circuit Breaker
US677535A US3467920A (en) 1966-11-05 1967-10-24 Molded case circuit breaker with sensitive thermal and magnetic trip mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49691/66A GB1162177A (en) 1966-11-05 1966-11-05 Automatic Electric Circuit Breaker

Publications (1)

Publication Number Publication Date
GB1162177A true GB1162177A (en) 1969-08-20

Family

ID=10453215

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49691/66A Expired GB1162177A (en) 1966-11-05 1966-11-05 Automatic Electric Circuit Breaker

Country Status (2)

Country Link
US (1) US3467920A (en)
GB (1) GB1162177A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4714907A (en) * 1985-07-31 1987-12-22 Merlin Gerin Miniature electrical circuit breaker with multiple moving contacts and thermomagnetic trip release

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3021867A1 (en) * 1980-06-11 1981-12-17 Brown, Boveri & Cie Ag, 6800 Mannheim SELF-SWITCH
US4616199A (en) * 1984-12-21 1986-10-07 Square D Company Circuit breaker improvement to prevent setting of trip assembly
US5214402A (en) * 1991-12-23 1993-05-25 North American Philips Corporation Trip link latch and interpole link for a circuit breaker
US5294901A (en) * 1992-09-24 1994-03-15 General Electric Company Molded case circuit breaker insulated armature latch arrangement
US6166616A (en) * 1999-11-23 2000-12-26 Eaton Corporation Circuit breaker with trip bar reinforcing clip

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154237A (en) * 1937-03-31 1939-04-11 William H Frank Separable contact structure
US3023288A (en) * 1959-08-25 1962-02-27 Ite Circuit Breaker Ltd Circuit breaker bimetal heater
US3116388A (en) * 1960-12-20 1963-12-31 Gen Electric Circuit breaker trip assembly
GB1031971A (en) * 1964-03-13 1966-06-02 Square D Co Improvements in or relating to electric circuit breakers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4714907A (en) * 1985-07-31 1987-12-22 Merlin Gerin Miniature electrical circuit breaker with multiple moving contacts and thermomagnetic trip release

Also Published As

Publication number Publication date
US3467920A (en) 1969-09-16

Similar Documents

Publication Publication Date Title
US3136921A (en) Circuit breakers
GB552965A (en) Improvements in or relating to trip devices for electric circuit breakers
GB1435544A (en) Disposable circuit breaker
GB1472380A (en) Circuit breaker with adjustable thermal trip unit
GB1162177A (en) Automatic Electric Circuit Breaker
US3636410A (en) Automatic molded case circuit breaker with time-delay overcurrent tripping
ES355102A1 (en) Electric circuit breaker with overcurrent and ground fault protection
GB1530576A (en) Circuit-breaker including an interchangeable tripping device
GB911844A (en) Improvements in or relating to electrical circuit breakers
GB1516154A (en) Circuit breaker with trip means
US3808572A (en) Inductive heating means for thermal trip device
GB1137325A (en) Improvements in electrical circuit breakers
US3703691A (en) Shunt trip with load terminal
US3506941A (en) Thermal tripping device for circuit breaker
GB1208208A (en) Electrical earth-leakage circuit-breakers
CN205881838U (en) Low -voltage circuit breaker
US3558988A (en) Pushbutton-operated overload circuit breaker
US2658973A (en) Electric circuit breaker
GB1016216A (en) Improvements in current-limiting circuit breakers
GB949283A (en) Improved electric circuit breakers
GB426486A (en) Improvements in or relating to thermally released electric overload circuit breakers
GB1091519A (en) Automatic electric circuit breaker
GB1414072A (en) Fused circuit greaker
US2711455A (en) Circuit breakers
GB709114A (en) An improved thermal over-current electric circuit-breaker

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years