GB1454356A - Electric circuit breakers - Google Patents

Electric circuit breakers

Info

Publication number
GB1454356A
GB1454356A GB544074A GB544074A GB1454356A GB 1454356 A GB1454356 A GB 1454356A GB 544074 A GB544074 A GB 544074A GB 544074 A GB544074 A GB 544074A GB 1454356 A GB1454356 A GB 1454356A
Authority
GB
United Kingdom
Prior art keywords
housing
bracket
latch
feb
engaged
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
GB544074A
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.)
Cutler Hammer Europe Ltd
Cutler Hammer Inc
Original Assignee
Cutler Hammer Europe Ltd
Cutler Hammer Inc
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 Cutler Hammer Europe Ltd, Cutler Hammer Inc filed Critical Cutler Hammer Europe Ltd
Publication of GB1454356A publication Critical patent/GB1454356A/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
    • H01H71/1054—Means for avoiding unauthorised release
    • 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
    • H01H71/1054—Means for avoiding unauthorised release
    • H01H2071/1063—Means for avoiding unauthorised release making use of an equilibrating mass
    • 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
    • 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
    • H01H71/121—Protection of release 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
    • H01H71/504—Manual reset mechanisms which may be also used for manual release provided with anti-rebound means

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Breakers (AREA)

Abstract

1454356 Circuit breakers CUTLER-HAMMER EUROPA Ltd 6 Feb 1974 [6 Feb 1973] 05440/74 Heading H1N In a circuit breaker having an insulating housing 2, 4, a stationary contact 8, a movable contact 10 and an operating mechanism, the moving contact is mounted on a rocking shaft 22 journalled in bearings in two brackets 24 within the housing, each bearing having two parts to facilitate assembly, one part 100 being provided by the bracket, the other being provided by a removable retainer 98. Retainers 98 have lugs 101, 102, 103 that hold it engaged by friction with lug 104 of bracket 24 during assembly. A shoulder of the housing (106 Fig. 11, not shown) holds the retainer in place after bracket 24 is secured to housing 2. As described the circuit breaker is multipole with dual thermal and magnetic current sensing means 16 for each pole. Upon overload in one circuit, tripbar 18 extending across all poles is moved releasing all three latching systems. The movable contacts are carried by arms 12 of assemblies having frames 20 secured to common rocking shaft 22. The toggle system is arranged such that whenever the contacts are closed (e.g. welded together) the operating lever is biased to the "on" position (Fig. 5, not shown). Each latch system has a primary latch 48, which restrains lever 27 to fix in position upper pivot pin 32 of the toggle linkage and is retained itself by secondary latch 58 engaged on overcurrent by member 16.
GB544074A 1973-02-06 1974-02-06 Electric circuit breakers Expired GB1454356A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00330031A US3849751A (en) 1973-02-06 1973-02-06 Electric circuit breakers

Publications (1)

Publication Number Publication Date
GB1454356A true GB1454356A (en) 1976-11-03

Family

ID=23288009

Family Applications (1)

Application Number Title Priority Date Filing Date
GB544074A Expired GB1454356A (en) 1973-02-06 1974-02-06 Electric circuit breakers

Country Status (2)

Country Link
US (1) US3849751A (en)
GB (1) GB1454356A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935409A (en) * 1962-05-18 1976-01-27 General Electric Company Current-limiting circuit breaker
US4001742A (en) * 1975-10-30 1977-01-04 General Electric Company Circuit breaker having improved operating mechanism
US4080582A (en) * 1976-09-15 1978-03-21 Cutler-Hammer, Inc. Circuit breaker with improved trip mechanism
US4291209A (en) * 1977-06-21 1981-09-22 Westinghouse Electric Corp. Circuit breaker having improved movable contact-drive mechanism interconnection
US4144427A (en) * 1977-07-20 1979-03-13 Gould Inc. Anti-rebound and contact kicker means for circuit breaker
DE2816352C2 (en) * 1978-04-12 1982-12-16 Siemens AG, 1000 Berlin und 8000 München Low voltage circuit breaker with arcing compartment and switching mechanism
DE2817668C2 (en) * 1978-04-19 1979-11-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Low-voltage circuit breaker with a device for limiting contact lifting
JPS56122245U (en) * 1980-02-19 1981-09-17
IT8223118V0 (en) * 1982-10-07 1982-10-07 Sace Spa ELECTRIC SWITCH WITH STOPPING THE CONTROL LEVER STROKE IN CASE OF WELDING THE CONTACTS.
US4563557A (en) * 1984-09-28 1986-01-07 Westinghouse Electric Corp. Molded case circuit breaker with a movable contact arm shock absorbing member
US4642431A (en) * 1985-07-18 1987-02-10 Westinghouse Electric Corp. Molded case circuit breaker with a movable electrical contact positioned by a camming spring loaded clip
GB2183400B (en) * 1985-11-25 1989-11-01 Matsushita Electric Works Ltd A timer controlled multipole circuit breaker
US4679016A (en) * 1986-01-08 1987-07-07 General Electric Company Interchangeable mechanism for molded case circuit breaker
US5213206A (en) * 1991-05-29 1993-05-25 Westinghouse Electric Corp. Circuit breaker with positive on/off interlock
US5278373A (en) * 1991-10-18 1994-01-11 Square D Company Current limiting circuit breaker
US6218917B1 (en) * 1999-07-02 2001-04-17 General Electric Company Method and arrangement for calibration of circuit breaker thermal trip unit
PL357559A1 (en) * 2000-03-17 2004-07-26 Aeg Niederspannungstechnik Gmbh & Co, Kg Selective tripping device for a circuit breaker
DE10036351B4 (en) * 2000-07-26 2007-01-11 Moeller Gmbh Tripping device for overload and short-circuit tripping
JP4059058B2 (en) * 2002-10-28 2008-03-12 富士電機機器制御株式会社 Circuit breaker
US9697975B2 (en) * 2014-12-03 2017-07-04 Eaton Corporation Circuit breakers with moving contact arm with spaced apart contacts
US9685287B2 (en) * 2014-12-03 2017-06-20 Eaton Corporation Circuit breakers with moving contact having heel-toe action

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422381A (en) * 1966-02-16 1969-01-14 Westinghouse Electric Corp Multi-pole circuit breaker with common trip bar
US3510818A (en) * 1968-06-24 1970-05-05 Ite Imperial Corp Automatic circuit breaker with cammed over-center operating mechanism
US3621189A (en) * 1970-08-26 1971-11-16 Cutler Hammer Inc Inkage contact operating mechanism for electric circuit breaker
US3760308A (en) * 1972-07-31 1973-09-18 Westinghouse Electric Corp Circuit breaker system

Also Published As

Publication number Publication date
US3849751A (en) 1974-11-19

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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