GB1278058A - High-speed circuit breakers - Google Patents

High-speed circuit breakers

Info

Publication number
GB1278058A
GB1278058A GB38769/69A GB3876969A GB1278058A GB 1278058 A GB1278058 A GB 1278058A GB 38769/69 A GB38769/69 A GB 38769/69A GB 3876969 A GB3876969 A GB 3876969A GB 1278058 A GB1278058 A GB 1278058A
Authority
GB
United Kingdom
Prior art keywords
latch
pivot
contact
contact arm
arm
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
GB38769/69A
Inventor
John Detorre
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.)
Federal Pacific Electric Co
Original Assignee
Federal Pacific 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 Federal Pacific Electric Co filed Critical Federal Pacific Electric Co
Publication of GB1278058A publication Critical patent/GB1278058A/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
    • 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
    • H01H71/503—Means for increasing the opening stroke of the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening

Landscapes

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

Abstract

1278058 Automatic circuit-breakers FEDERAL PACIFIC ELECTRIC CO 1 Aug 1969 [1 Aug 1968] 38769/69 Heading H1N In a single or multipole circuit breaker having a thermally releasable trip bar 72, Fig. 1, as in Specification 1,053,654, in which over-centre toggle links 58, 60 are released through latch 70 and cradle 52 to permit contact 18 to open about pivot 38, additional quick-acting electromagnetic release means is provided independently of the latch 70. Each contact arm 20 has its pivot 38 located in slots 44 by a pivoted latch 84 carrying an armature 80 adjacent to a magnetic yoke 78 mounted on the bimetal 24 of the thermal release trip. In the event of a sudden overcurrent the latch 84 releases pivot 38 whereby the contact arm 20 is free to pivot about pin 66 (at the switch closed position 66a) on the end of toggle link 60 whereby the arm 20 opens to the position shown hatched in Fig. 1. The circuit breaker may additionally be released by electrodynamic forces between the contact arm 20 and the current loop 92 for the fixed contact 16. In this example the latch 84 is slightly chamfered at (84a<SP>11</SP>), Fig 5 (not shown) whereby the pin 38 forces the latch 84 back against the action of its torsion spring 40.
GB38769/69A 1968-08-01 1969-08-01 High-speed circuit breakers Expired GB1278058A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74951768A 1968-08-01 1968-08-01

Publications (1)

Publication Number Publication Date
GB1278058A true GB1278058A (en) 1972-06-14

Family

ID=25014070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38769/69A Expired GB1278058A (en) 1968-08-01 1969-08-01 High-speed circuit breakers

Country Status (4)

Country Link
US (1) US3500266A (en)
DE (1) DE1938929A1 (en)
FR (1) FR2014847A1 (en)
GB (1) GB1278058A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008063412A2 (en) 2006-11-10 2008-05-29 Siemens Energy & Automation, Inc. Lighting control module contact arm & armature plate

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5942935B2 (en) * 1978-07-05 1984-10-18 富士電機株式会社 circuit breaker
US4464642A (en) * 1981-03-12 1984-08-07 Mitsubishi Denki Kabushiki Kaisha Circuit breaker
FR2574987B1 (en) * 1984-12-13 1987-04-24 Telemecanique Electrique PROTECTIVE SWITCHING APPARATUS
JPH0727750B2 (en) * 1984-12-26 1995-03-29 株式会社日立製作所 Circuit breaker
US4649242A (en) * 1985-09-24 1987-03-10 Siemens Energy & Automation, Inc. Stationary contact assembly for a current limiting circuit breaker
AU2004299837B2 (en) * 2003-12-12 2010-09-23 Jy Capital Investment Llc A pre-burning, dry process methodology and systems for enhancing solid fuel properties
US8585786B2 (en) * 2006-03-31 2013-11-19 Coaltek, Inc. Methods and systems for briquetting solid fuel
US8585788B2 (en) * 2006-03-31 2013-11-19 Coaltek, Inc. Methods and systems for processing solid fuel
US8487721B2 (en) 2011-01-06 2013-07-16 General Electric Company Circuit interruption device and method of assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127488A (en) * 1960-07-18 1964-03-31 Ite Circuit Breaker Ltd Current limiting circuit breaker having both contacts movable
US3192344A (en) * 1961-08-28 1965-06-29 Fed Pacific Electric Co High interrupting capacity circuit breakers with electrodynamic latch release
US3343108A (en) * 1965-12-10 1967-09-19 Terasaki Denki Sangyo Kk High speed circuit interrupter using magnetic blowoff and means for decreasing the inertial effects during interruption

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008063412A2 (en) 2006-11-10 2008-05-29 Siemens Energy & Automation, Inc. Lighting control module contact arm & armature plate
WO2008063412A3 (en) * 2006-11-10 2008-09-25 Siemens Energy & Automat Lighting control module contact arm & armature plate
US7968813B2 (en) 2006-11-10 2011-06-28 Siemens Industry, Inc. Switching device contact arm and armature plate

Also Published As

Publication number Publication date
US3500266A (en) 1970-03-10
FR2014847A1 (en) 1970-04-24
DE1938929A1 (en) 1970-02-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee