GB1312157A - Telectrical circuit breakers and isolators - Google Patents

Telectrical circuit breakers and isolators

Info

Publication number
GB1312157A
GB1312157A GB5009470A GB1312157DA GB1312157A GB 1312157 A GB1312157 A GB 1312157A GB 5009470 A GB5009470 A GB 5009470A GB 1312157D A GB1312157D A GB 1312157DA GB 1312157 A GB1312157 A GB 1312157A
Authority
GB
United Kingdom
Prior art keywords
arm
contact
arms
carrier
spring
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
GB5009470A
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.)
Dorman Smith Switchgear Ltd
Original Assignee
Dorman Smith Switchgear Ltd
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 Dorman Smith Switchgear Ltd filed Critical Dorman Smith Switchgear Ltd
Publication of GB1312157A publication Critical patent/GB1312157A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H9/383—Arcing contact pivots relative to the movable contact assembly

Landscapes

  • Breakers (AREA)

Abstract

1312157 Automatic circuit-breakers DORMAN SMITH SWITCHGEAR Ltd 22 Sept 1971 [22 Oct 1970] 50094/70 Heading H1N A circuit-breaker or isolator has, for the or each pole, a moving contact assembly 11 comprising a plurality of parallel-connected movable contact arms 27, each carrying a contact 28 engageable with a fixed contact 14, the arms being of strip metal and disposed side-by-side in parallel relation in a carrier 22, each arm having a spring 33 providing a loading portion engaging one longitudinal edge of the arm and a pair of links 36, 37, extending across the arm adjacent opposite sides thereof and locating on a cross member 32 extending transversly of the arms and provided by the carrier 22. Each arm 27 has a V-shaped notch 31 by which it locates on and makes electrical contact with an arcuate bearing surface 18 of a hinge contact block 15. A protrusion 42 of each arm 27 engages a lip 43 of the carrier 22 to limit movement of the arm under its spring loading. One arm 27a is longer than the other arm 27 and provides an arcing contact 29. Arm 27a has its own independent helical loading spring 30. A respective bimetal and electromagnet arrangement (not shown) associated with each contact assembly 11 cooperates with a common trip bar (not shown) to cause collapse of a toggle linkage 12 and tripping of the breaker. When the contact assembly 11 is used in an isolator for an electrical component, the construction provides two opposed carriers 22 on either side of a withdrawable conductor (not shown). The notch 31 and hinge contact block 15 arrangement is claimed in Specification 1,312,156. (For Figure see next page.)
GB5009470A 1970-10-22 1970-10-22 Telectrical circuit breakers and isolators Expired GB1312157A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5009470 1970-10-22

Publications (1)

Publication Number Publication Date
GB1312157A true GB1312157A (en) 1973-04-04

Family

ID=10454638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5009470A Expired GB1312157A (en) 1970-10-22 1970-10-22 Telectrical circuit breakers and isolators

Country Status (5)

Country Link
US (1) US3721788A (en)
DE (1) DE2151903C3 (en)
FR (1) FR2111532A5 (en)
GB (1) GB1312157A (en)
IT (1) IT940998B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ300886B6 (en) * 2002-03-25 2009-09-02 Oez S.R.O. Release gear, in particular of switching mechanisms of circuit breakers and disconnect switches
CZ300885B6 (en) * 2002-01-22 2009-09-02 Oez S.R.O. Tension spring hinge, in particular for springs of switching devices

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6147035A (en) * 1984-08-10 1986-03-07 富士電機株式会社 Contactor structure of circuit breaker
CN111341615B (en) * 2020-03-26 2021-12-14 贵州泰永长征技术股份有限公司 Floating static contact assembly device structure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689896A (en) * 1951-11-28 1954-09-21 Cutler Hammer Inc Shock resistant electric switch
US2788421A (en) * 1953-05-12 1957-04-09 Westinghouse Electric Corp Circuit breaker contact structure
US2933580A (en) * 1958-05-06 1960-04-19 Joe Davidson Pivotally balanced members
US2962573A (en) * 1958-10-01 1960-11-29 Gen Electric Electric circuit interrupter
US2945927A (en) * 1959-03-20 1960-07-19 Mason Electric Corp Rotary switch with common advancing and pressure springs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ300885B6 (en) * 2002-01-22 2009-09-02 Oez S.R.O. Tension spring hinge, in particular for springs of switching devices
CZ300886B6 (en) * 2002-03-25 2009-09-02 Oez S.R.O. Release gear, in particular of switching mechanisms of circuit breakers and disconnect switches

Also Published As

Publication number Publication date
US3721788A (en) 1973-03-20
FR2111532A5 (en) 1972-06-02
IT940998B (en) 1973-02-20
DE2151903A1 (en) 1972-04-27
DE2151903B2 (en) 1974-09-05
DE2151903C3 (en) 1975-04-30

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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