EP0291835A3 - Temperature responsive device and circuit breaker - Google Patents

Temperature responsive device and circuit breaker Download PDF

Info

Publication number
EP0291835A3
EP0291835A3 EP88107560A EP88107560A EP0291835A3 EP 0291835 A3 EP0291835 A3 EP 0291835A3 EP 88107560 A EP88107560 A EP 88107560A EP 88107560 A EP88107560 A EP 88107560A EP 0291835 A3 EP0291835 A3 EP 0291835A3
Authority
EP
European Patent Office
Prior art keywords
responsive device
temperature responsive
bimetal element
circuit breaker
end portion
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.)
Granted
Application number
EP88107560A
Other versions
EP0291835A2 (en
EP0291835B1 (en
Inventor
Bruce William Pickett
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.)
Crabtree Electrical Industries Ltd
Original Assignee
Crabtree Electrical Industries 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 Crabtree Electrical Industries Ltd filed Critical Crabtree Electrical Industries Ltd
Priority to AT88107560T priority Critical patent/ATE86789T1/en
Publication of EP0291835A2 publication Critical patent/EP0291835A2/en
Publication of EP0291835A3 publication Critical patent/EP0291835A3/en
Application granted granted Critical
Publication of EP0291835B1 publication Critical patent/EP0291835B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H71/7436—Adjusting the position (or prestrain) of the bimetal
    • 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
    • H01H71/16—Electrothermal mechanisms with bimetal element

Landscapes

  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)
  • Temperature-Responsive Valves (AREA)
  • Non-Reversible Transmitting Devices (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Vehicle Body Suspensions (AREA)
  • Control Of Combustion (AREA)
  • Control Of Temperature (AREA)
  • Cookers (AREA)

Abstract

A temperature responsive device comprises a bimetal element (12) flexible on temperature and current overload conditions to engage a trip latch (14) to open the circuit. The bimetal element (12) is pivotally mounted between knife edges (22) provided on a mounting member (20), whilst one end portion of the bimetal element is connected to an adjustment means (24), by which said end portion may be moved, pivotally to move the bimetal element about its pivotal mounting.
EP88107560A 1987-05-19 1988-05-11 Temperature responsive device and circuit breaker Expired - Lifetime EP0291835B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88107560T ATE86789T1 (en) 1987-05-19 1988-05-11 TEMPERATURE AFFECTED DEVICE AND CIRCUIT BREAKER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8711794A GB2205998B (en) 1987-05-19 1987-05-19 Temperature responsive devices
GB8711794 1987-05-19

Publications (3)

Publication Number Publication Date
EP0291835A2 EP0291835A2 (en) 1988-11-23
EP0291835A3 true EP0291835A3 (en) 1989-07-26
EP0291835B1 EP0291835B1 (en) 1993-03-10

Family

ID=10617578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107560A Expired - Lifetime EP0291835B1 (en) 1987-05-19 1988-05-11 Temperature responsive device and circuit breaker

Country Status (7)

Country Link
EP (1) EP0291835B1 (en)
JP (1) JPH01105429A (en)
AT (1) ATE86789T1 (en)
DE (1) DE3878979T2 (en)
GB (1) GB2205998B (en)
MY (1) MY103275A (en)
ZA (1) ZA883336B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285886A (en) * 1994-01-21 1995-07-26 Square D Co Circuit breaker
FR2753835B1 (en) * 1996-09-23 1998-10-30 THERMAL TRIGGERING DEVICE FOR PROTECTIVE APPARATUS
FR3045931B1 (en) 2015-12-21 2017-12-22 Schneider Electric Ind Sas DEVICE FOR ASSEMBLING A BILAME AND A COMPONENT FORMING THE SUPPORT OF THIS BILAME AND ELECTRICAL PROTECTION APPARATUS COMPRISING IT.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213243A (en) * 1962-06-21 1965-10-19 Westinghouse Electric Corp Thermal overload relay with reset means
US3249720A (en) * 1962-02-19 1966-05-03 Ite Circuit Breaker Ltd Thermal trip unit with calibrating adjustment
US3265832A (en) * 1964-01-16 1966-08-09 Gen Electric Electrical control device with adjustable calibration locking means
US3265837A (en) * 1964-10-22 1966-08-09 Gen Electric Electric circuit breaker provide with an improved terminal strap for mounting a bimetal element
US3869688A (en) * 1974-01-24 1975-03-04 Westinghouse Electric Corp Customer adjustment switch assembly
US4030060A (en) * 1976-02-26 1977-06-14 Westinghouse Electric Corporation Thermally adjustable circuit breaker
EP0175976A2 (en) * 1984-09-28 1986-04-02 Westinghouse Electric Corporation Circuit breaker with bimetal and calibration adjusting means

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB565252A (en) * 1943-06-02 1944-11-02 Oliver Hawkes Goulstone Improvements in snap action mechanism applicable for making and breaking electric contacts
GB587807A (en) * 1945-01-13 1947-05-06 Brookhirst Switchgear Ltd Improvements in or relating to heat sensitive devices
GB778175A (en) * 1954-10-15 1957-07-03 Voigt & Haeffner Ag Improvements in or relating to arrangements for heating vehicles
DE2625716C3 (en) * 1976-06-09 1979-10-11 E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen Power control unit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249720A (en) * 1962-02-19 1966-05-03 Ite Circuit Breaker Ltd Thermal trip unit with calibrating adjustment
US3213243A (en) * 1962-06-21 1965-10-19 Westinghouse Electric Corp Thermal overload relay with reset means
US3265832A (en) * 1964-01-16 1966-08-09 Gen Electric Electrical control device with adjustable calibration locking means
US3265837A (en) * 1964-10-22 1966-08-09 Gen Electric Electric circuit breaker provide with an improved terminal strap for mounting a bimetal element
US3869688A (en) * 1974-01-24 1975-03-04 Westinghouse Electric Corp Customer adjustment switch assembly
US4030060A (en) * 1976-02-26 1977-06-14 Westinghouse Electric Corporation Thermally adjustable circuit breaker
EP0175976A2 (en) * 1984-09-28 1986-04-02 Westinghouse Electric Corporation Circuit breaker with bimetal and calibration adjusting means

Also Published As

Publication number Publication date
MY103275A (en) 1993-05-29
ZA883336B (en) 1988-11-16
GB2205998A (en) 1988-12-21
GB2205998B (en) 1991-03-13
EP0291835A2 (en) 1988-11-23
DE3878979D1 (en) 1993-04-15
JPH01105429A (en) 1989-04-21
EP0291835B1 (en) 1993-03-10
ATE86789T1 (en) 1993-03-15
DE3878979T2 (en) 1993-06-17
GB8711794D0 (en) 1987-06-24

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