GB589277A - Improvements in and relating to arc extinguishing structures for electric circuit interrupters - Google Patents

Improvements in and relating to arc extinguishing structures for electric circuit interrupters

Info

Publication number
GB589277A
GB589277A GB7423/45A GB742345A GB589277A GB 589277 A GB589277 A GB 589277A GB 7423/45 A GB7423/45 A GB 7423/45A GB 742345 A GB742345 A GB 742345A GB 589277 A GB589277 A GB 589277A
Authority
GB
United Kingdom
Prior art keywords
slots
contacts
parallel
arc
breaker
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
GB7423/45A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB589277A publication Critical patent/GB589277A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

589,277. Arc-rupturing in switches. BRITISH THOMSON-HOUSTON CO., Ltd. March 23, 1945, No. 7423. Convention date, March 24, 1944. [Class 38 (v)] In a circuit-breaker a number of parallel arcs are produced in narrow slots within an arcextinguishing structure, the slots being provided with communicating means tending to produce a uniform distribution of gases between the slots. The structure shown in Figs. 2 and 3 accommodates, within narrow slots 18, two parallel-connected fixed contacts 26 and two parallel-connected moving contacts 30, which occupy the position shown by dotted lines, when the breaker is open. This structure, which may be of moulded phosphoric asbestos, comprises outer walls 16, 17 and openings 32 to permit gases to circulate freely between the slots 18. For large currents more than two pairs of contacts 26, 30 are required, each pair occupying a slot 18, and a plurality of barriers separating the slots. A magnetic shield 28 is mounted between flexible conductors 27 and the contacts 26, to prevent magnetic forces produced by the current in the conductors 27 from causing the arc to move downwardly. Cooling means 33, 34 are provided as described in Specification 589,270.
GB7423/45A 1944-03-24 1945-03-23 Improvements in and relating to arc extinguishing structures for electric circuit interrupters Expired GB589277A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US527913A US2429846A (en) 1944-03-24 1944-03-24 Electric circuit interrupter

Publications (1)

Publication Number Publication Date
GB589277A true GB589277A (en) 1947-06-16

Family

ID=24103460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7423/45A Expired GB589277A (en) 1944-03-24 1945-03-23 Improvements in and relating to arc extinguishing structures for electric circuit interrupters

Country Status (2)

Country Link
US (1) US2429846A (en)
GB (1) GB589277A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104992860A (en) * 2015-08-07 2015-10-21 马人欢 Electric arc prevention safety breaker

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632826A (en) * 1949-12-10 1953-03-24 Gen Electric Arc quenching circuit interrupter
US2861152A (en) * 1954-12-13 1958-11-18 Gen Electric Electric circuit interrupter
US2942084A (en) * 1957-08-30 1960-06-21 Allis Chalmers Mfg Co Circuit breaker employing perforated flue means adjacent arc runners
DE1127985B (en) * 1960-04-21 1962-04-19 Licentia Gmbh Arc extinguishing chamber with arc rails and parallel to the arc arranged in its plane, located between two insulating Loeschplatten are located insulating longitudinal partitions
GB1039192A (en) * 1964-03-16 1966-08-17 Crabtree & Co Ltd J A Improvements in and connected with thermal overload devices for contactor-operated motor starters

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE403068C (en) * 1923-05-15 1924-09-26 Bbc Brown Boveri & Cie Spark chamber for electrical air switches
US2109216A (en) * 1930-09-20 1938-02-22 Westinghouse Electric & Mfg Co Arc-extinguishing device
US1955961A (en) * 1931-07-06 1934-04-24 Square D Co Arc suppressor with magnetic feature
FR743637A (en) * 1931-10-13 1933-04-03
NL41750C (en) * 1934-03-16
US2039080A (en) * 1934-03-17 1936-04-28 Westinghouse Electric & Mfg Co Circuit interrupter
US2032149A (en) * 1934-09-13 1936-02-25 Westinghouse Electric & Mfg Co Circuit interrupter
BE430770A (en) * 1934-10-20
US2192772A (en) * 1935-09-26 1940-03-05 Westinghouse Electric & Mfg Co Circuit interrupter
US2338715A (en) * 1941-03-20 1944-01-11 Ite Circuit Breaker Ltd Arc splitting plate
US2367937A (en) * 1942-06-24 1945-01-23 Westinghouse Electric & Mfg Co Circuit interrupter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104992860A (en) * 2015-08-07 2015-10-21 马人欢 Electric arc prevention safety breaker

Also Published As

Publication number Publication date
US2429846A (en) 1947-10-28

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