EP0232172A3 - Switching arrangement with thermal and magnetic functions - Google Patents

Switching arrangement with thermal and magnetic functions Download PDF

Info

Publication number
EP0232172A3
EP0232172A3 EP87301023A EP87301023A EP0232172A3 EP 0232172 A3 EP0232172 A3 EP 0232172A3 EP 87301023 A EP87301023 A EP 87301023A EP 87301023 A EP87301023 A EP 87301023A EP 0232172 A3 EP0232172 A3 EP 0232172A3
Authority
EP
European Patent Office
Prior art keywords
contact
thermal
movable
burglary
fixed
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.)
Withdrawn
Application number
EP87301023A
Other languages
German (de)
French (fr)
Other versions
EP0232172A2 (en
Inventor
Tai-Her Yang
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
Publication of EP0232172A2 publication Critical patent/EP0232172A2/en
Publication of EP0232172A3 publication Critical patent/EP0232172A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/0253—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch two co-operating contacts actuated independently
    • 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

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

A switch combining magnetic control and thermal control. A movable contact is urged by a magnet into contact with a fixed contact. A bimetallic strip is capable of urging the movable contact out of contact with the fixed contact upon exposure to a thermal overload. For a switch responsive to both burglary and fire detection, a permanent magnet urges the movable and fixed contact into a normally closed position. When the magnet's influence is no longer felt, such as when a burglary occurs, the movable and fixed contacts will separate. A bimetallic strip, when sensing a thermal overload, will also move the movable contact out of contact with the fixed contact even in the absence of a burglary. The switch responsive to both magnetic and thermal energy is also used to protect a relay controlled circuit from thermal overload.
EP87301023A 1986-02-05 1987-02-05 Switching arrangement with thermal and magnetic functions Withdrawn EP0232172A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8602784 1986-02-05
GB868602784A GB8602784D0 (en) 1986-02-05 1986-02-05 Switching arrangement

Publications (2)

Publication Number Publication Date
EP0232172A2 EP0232172A2 (en) 1987-08-12
EP0232172A3 true EP0232172A3 (en) 1989-08-23

Family

ID=10592528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87301023A Withdrawn EP0232172A3 (en) 1986-02-05 1987-02-05 Switching arrangement with thermal and magnetic functions

Country Status (2)

Country Link
EP (1) EP0232172A3 (en)
GB (1) GB8602784D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11373825B2 (en) * 2020-09-30 2022-06-28 Siemens Industry, Inc. Fail-safe lockout trip mechanism in a circuit interrupting device
CN114373653B (en) * 2022-03-15 2022-05-31 深圳市精视智造科技有限公司 Expansion fuse

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978065A (en) * 1932-02-18 1934-10-23 C T Electric Company Thermostatic snap switch
GB431475A (en) * 1933-01-06 1935-07-08 Telefunken Gmbh Improvements in or relating to electric thermal switches of the vacuum type
US2797281A (en) * 1955-08-29 1957-06-25 Baso Inc Condition responsive circuit controlling devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978065A (en) * 1932-02-18 1934-10-23 C T Electric Company Thermostatic snap switch
GB431475A (en) * 1933-01-06 1935-07-08 Telefunken Gmbh Improvements in or relating to electric thermal switches of the vacuum type
US2797281A (en) * 1955-08-29 1957-06-25 Baso Inc Condition responsive circuit controlling devices

Also Published As

Publication number Publication date
GB8602784D0 (en) 1986-03-12
EP0232172A2 (en) 1987-08-12

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