GB834140A - Improvements relating to electrical switches or circuit breakers - Google Patents

Improvements relating to electrical switches or circuit breakers

Info

Publication number
GB834140A
GB834140A GB899157A GB899157A GB834140A GB 834140 A GB834140 A GB 834140A GB 899157 A GB899157 A GB 899157A GB 899157 A GB899157 A GB 899157A GB 834140 A GB834140 A GB 834140A
Authority
GB
United Kingdom
Prior art keywords
fuse
circuit breakers
contacts
improvements relating
electrical switches
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
GB899157A
Inventor
Stanley John Pearson
Marian Roman Kowalczyk
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
Priority to GB899157A priority Critical patent/GB834140A/en
Publication of GB834140A publication Critical patent/GB834140A/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
    • H01H71/14—Electrothermal mechanisms
    • H01H71/20—Electrothermal mechanisms with fusible mass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches

Landscapes

  • Fuses (AREA)

Abstract

834,140. Vacuum switches; electricallyreleased switches. BRITISH THOMSONHOUSTON CO. Ltd. Feb. 5, 1958 [March 19, 1957], No. 8991/57. Class 38 (5). A vacuum switch has its contacts 2, 2a normally held closed against the opening bias of a spring 8 by a fuse 9 connected in series with the switch contacts. The fuse is connected between the casing 3 and a plate 5 carried on the end of a contact operating rod 6 which is sealed to the casing by a bellows 4. When the fuse 9 blows, the spring 8 acting on the plate 5 opens the contacts 2, 2a.
GB899157A 1957-03-19 1957-03-19 Improvements relating to electrical switches or circuit breakers Expired GB834140A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB899157A GB834140A (en) 1957-03-19 1957-03-19 Improvements relating to electrical switches or circuit breakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB899157A GB834140A (en) 1957-03-19 1957-03-19 Improvements relating to electrical switches or circuit breakers

Publications (1)

Publication Number Publication Date
GB834140A true GB834140A (en) 1960-05-04

Family

ID=9863262

Family Applications (1)

Application Number Title Priority Date Filing Date
GB899157A Expired GB834140A (en) 1957-03-19 1957-03-19 Improvements relating to electrical switches or circuit breakers

Country Status (1)

Country Link
GB (1) GB834140A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3472981A (en) * 1966-08-05 1969-10-14 Gen Electric Pressure responsive protective means for vacuum type circuit interrupters immersed in liquid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3472981A (en) * 1966-08-05 1969-10-14 Gen Electric Pressure responsive protective means for vacuum type circuit interrupters immersed in liquid

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