CA432267A - Overload relay - Google Patents

Overload relay

Info

Publication number
CA432267A
CA432267A CA432267A CA432267DA CA432267A CA 432267 A CA432267 A CA 432267A CA 432267 A CA432267 A CA 432267A CA 432267D A CA432267D A CA 432267DA CA 432267 A CA432267 A CA 432267A
Authority
CA
Canada
Prior art keywords
overload relay
overload
relay
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
CA432267A
Other languages
French (fr)
Inventor
C. Armstrong George
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.)
Westinghouse Canada Inc
Original Assignee
Canadian Westinghouse 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.)
Publication date
Application granted granted Critical
Publication of CA432267A publication Critical patent/CA432267A/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
    • H01H71/22—Electrothermal mechanisms with compensation for variation of ambient temperature
    • 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
    • H01H71/142—Electrothermal mechanisms actuated due to change of magnetic permeability
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
CA432267A 1940-07-26 Overload relay Expired CA432267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US347636A US2347018A (en) 1940-07-26 1940-07-26 Overload relay

Publications (1)

Publication Number Publication Date
CA432267A true CA432267A (en) 1946-01-01

Family

ID=23364576

Family Applications (1)

Application Number Title Priority Date Filing Date
CA432267A Expired CA432267A (en) 1940-07-26 Overload relay

Country Status (3)

Country Link
US (1) US2347018A (en)
CA (1) CA432267A (en)
DE (2) DE969872C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781433A (en) * 1950-12-23 1957-02-12 Heinemann Electric Co Electro-magnetic circuit breaker
US2953723A (en) * 1957-05-08 1960-09-20 Texas Instruments Inc Control device
DE1121188B (en) * 1959-06-20 1962-01-04 Sursum Elek Zitaets Ges Leyhau Device for protection against electrical overcurrents

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE452520C (en) * 1927-11-15 Aeg Thermal switching device
FR588469A (en) * 1923-12-10 1925-05-07 Asea Ab Time relay
GB295039A (en) * 1927-08-05 1929-04-25 Gen Electric Improvements in or relating to thermo-magnetic relays
DE525939C (en) * 1929-05-04 1931-05-30 Kloeckner Komm Ges F Overcurrent release device for alternating current with a thermal time release and with an instantaneous electromagnetic quick release
DE647747C (en) * 1933-03-04 1937-07-12 Siemens Schuckertwerke Akt Ges Device for triggering switching processes influenced by heat
DE649369C (en) * 1933-10-31 1937-08-23 Landis & Gyr Ag Electromagnetic trigger for automatic switch that responds immediately in the event of a short circuit and with a delay in the event of overcurrent

Also Published As

Publication number Publication date
DE969872C (en) 1958-07-24
DE970329C (en) 1958-09-11
US2347018A (en) 1944-04-18

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