GB409842A - Improvements relating to automatic circuit-breakers, switches and the like, in whichthermally-sensitive release devices are used - Google Patents

Improvements relating to automatic circuit-breakers, switches and the like, in whichthermally-sensitive release devices are used

Info

Publication number
GB409842A
GB409842A GB80533A GB80533A GB409842A GB 409842 A GB409842 A GB 409842A GB 80533 A GB80533 A GB 80533A GB 80533 A GB80533 A GB 80533A GB 409842 A GB409842 A GB 409842A
Authority
GB
United Kingdom
Prior art keywords
switches
whichthermally
breakers
improvements relating
release devices
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
GB80533A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB80533A priority Critical patent/GB409842A/en
Publication of GB409842A publication Critical patent/GB409842A/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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/38—Electromagnetic mechanisms wherein the magnet coil also acts as arc blow-out device

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Abstract

409,842. Electrically - released switches. CRABTREE, J. A., Endwood, Little Aston Park, Sutton Coldfield. Jan. 10, 1933, No. 805. [Class 38 (v).] Magnetic blow-outs.-One coil b<1> of a pair of parallel-connected coils b, b<1> has a thermal-release member c connected in series with it, and a magnetic-release coil a, which may be in series with the coil b, as shown, or in series with both b, b<1>, Fig. 1 (not shown), is also provided. The arrangement prevents impairment of the effect of a in the event of fusing or derangement of c introducing an abnormal resistance into the circuit.
GB80533A 1933-01-10 1933-01-10 Improvements relating to automatic circuit-breakers, switches and the like, in whichthermally-sensitive release devices are used Expired GB409842A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB80533A GB409842A (en) 1933-01-10 1933-01-10 Improvements relating to automatic circuit-breakers, switches and the like, in whichthermally-sensitive release devices are used

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB80533A GB409842A (en) 1933-01-10 1933-01-10 Improvements relating to automatic circuit-breakers, switches and the like, in whichthermally-sensitive release devices are used

Publications (1)

Publication Number Publication Date
GB409842A true GB409842A (en) 1934-05-10

Family

ID=9710798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB80533A Expired GB409842A (en) 1933-01-10 1933-01-10 Improvements relating to automatic circuit-breakers, switches and the like, in whichthermally-sensitive release devices are used

Country Status (1)

Country Link
GB (1) GB409842A (en)

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