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GB887860A - Improved electric circuit-breakers - Google Patents

Improved electric circuit-breakers

Info

Publication number
GB887860A
GB887860A GB38910/59A GB3891059A GB887860A GB 887860 A GB887860 A GB 887860A GB 38910/59 A GB38910/59 A GB 38910/59A GB 3891059 A GB3891059 A GB 3891059A GB 887860 A GB887860 A GB 887860A
Authority
GB
United Kingdom
Prior art keywords
slits
conductors
contacts
contact
rivet
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
GB38910/59A
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of GB887860A publication Critical patent/GB887860A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force

Landscapes

  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

887,860. Air-break switches; switches, partly electromagnetic. ETABLISSEMENTS MERLIN & GERIN. Nov. 17, 1959 [Dec. 23, 1958], No. 38910/59. Class 38 (5). The moving contact p of a circuit-breaker is pressed against the fixed contact P by the electrodynamic repulsion between conductors L 1 , L 2 and a conductor l, and by the attraction between the conductors L, l. Further conductors may be provided to increase these effects by adding one or more turns to the conductors L 1 , L 2 before joining them to conductor L, Figs. 3 and 4 (not shown), the coil so formed serving also as a magnetic blow-out. The arrangement of Figs. 1 and 2 is provided in Figs. 5 and 6 by fixed shells 1 each having a jaw 2 secured to a central piece 6 by rivets 7 . . . 10, the last three having insulating sleeves and washers which, with slits 3, 4, 5, cause current to flow through each jaw 2 from the point P to the rivet 7 in the path shown. The current path through the member 6 to clamping members 11 is produced by slits 15, 16 in the member 6 and by insulating the rivets 12, 13 which, with rivet 14, secure the members 6, 11. The moving contact 17 is insulated at 19 from a pivoted lever 18 so that current flows from the contact points p to the rivet 20 as shown. Anti-clockwise rotation of interrupting levers 23 moves the lever 18 to close contacts 1, 17, compresses a spring 22 to secure contact pressure and engages the levers 23 with main contacts 24. During opening the arcs at points P, p are driven inwardly and the arc gases are expelled through a space 25 between the shells 1. In a modification, Figs. 7 and 8, fixed contacts 30 are secured to a shaft 31 carried by members 32 and are movable between stops 36, 37 against a spring 33 acting on their lower ends through a rod 34 and a fork 35. The desired current paths are produced by slits 27, 28, 29 in the movable contact 26, by the combined U and Z shape of the contacts 30, and by a slit 38 in each member 32, the slits 27 . . . 29 being filled with insulating material if necessary. The arrangement shown in Figs. 7 and 8 may replace the main contacts 23, 24 shown in Figs. 5 and 6.
GB38910/59A 1958-12-23 1959-11-17 Improved electric circuit-breakers Expired GB887860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR4068A FR1225685A (en) 1958-12-23 1958-12-23 Improvements to electrodynamically compensated pressure contacts

Publications (1)

Publication Number Publication Date
GB887860A true GB887860A (en) 1962-01-24

Family

ID=8569758

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38910/59A Expired GB887860A (en) 1958-12-23 1959-11-17 Improved electric circuit-breakers

Country Status (6)

Country Link
US (1) US3092699A (en)
BE (1) BE584795A (en)
CH (1) CH357788A (en)
DE (1) DE1143567B (en)
FR (1) FR1225685A (en)
GB (1) GB887860A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH403075A (en) * 1963-09-27 1965-11-30 Bbc Brown Boveri & Cie Step switching device for regulating transformers
US3593227A (en) * 1968-02-28 1971-07-13 Gennady Fedosievich Mitskevich Automatic electrodynamic blowoff breaker with stationary contact form of two series wound u-shaped members
US3663905A (en) * 1971-05-20 1972-05-16 Ite Imperial Corp Contact bridge system for circuit breaker
US4078218A (en) * 1976-02-12 1978-03-07 Westinghouse Electric Corporation Magnetic contactor
US4255636A (en) * 1976-12-30 1981-03-10 Westinghouse Electric Corp. Circuit breaker with current carrying conductor system utilizing eddy current repulsion
US4240053A (en) * 1976-12-30 1980-12-16 Westinghouse Electric Corp. Circuit breaker utilizing improved current carrying conductor system
US4158829A (en) * 1977-09-01 1979-06-19 Cutler-Hammer, Inc. Electromagnetically operated DC power contactor
US4206333A (en) * 1978-08-17 1980-06-03 Eaton Corporation Double pole sliding contact trigger switch with sequential auxiliary butt contacts
US4513267A (en) * 1983-03-28 1985-04-23 Siemens-Allis, Inc. Stationary contact strap to achieve a current limiting blow-off effect
US4511774A (en) * 1983-12-08 1985-04-16 Eaton Corporation Current limiting contact arrangement
DE3431581A1 (en) * 1984-08-28 1986-03-20 Friedrich Dipl.-Ing. 8033 Krailling Lauerer Electrical circuit breaker
US4849590A (en) * 1988-04-01 1989-07-18 Kohler Company Electric switch with counteracting electro-electro-dynamic forces
US4804933A (en) * 1988-04-01 1989-02-14 Brown Industrial Gas, Inc. Automatic transfer switch
DE3901823A1 (en) * 1989-01-21 1989-11-30 Gerhard Dr Peche Vacuum switching tube
US5072203A (en) * 1989-09-18 1991-12-10 Allen-Bradley Company, Inc. Method and device for protecting starters from fault currents
US4991050A (en) * 1989-09-18 1991-02-05 Allen-Bradley Company, Inc. Method and device for protecting starters from fault currents
EP2458613A1 (en) * 2010-11-29 2012-05-30 Eaton Industries GmbH Contact device of an electric switching device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732468A (en) * 1956-01-24 Electric switch
DE398478C (en) * 1922-11-07 1924-07-09 Bbc Brown Boveri & Cie Switch for large instantaneous currents
DE560368C (en) * 1928-09-21 1932-10-01 Const Electr De Delle Sa Atel Loop-shaped switch with two pairs of main contacts and additional spark-drawing contacts
BE534048A (en) * 1953-12-11
BE534764A (en) * 1954-02-04 Merlin Gerin

Also Published As

Publication number Publication date
US3092699A (en) 1963-06-04
BE584795A (en) 1960-03-16
CH357788A (en) 1961-10-31
FR1225685A (en) 1960-07-04
DE1143567B (en) 1963-02-14

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