GB1436066A - Self-restoring current limiting device - Google Patents

Self-restoring current limiting device

Info

Publication number
GB1436066A
GB1436066A GB2483474A GB2483474A GB1436066A GB 1436066 A GB1436066 A GB 1436066A GB 2483474 A GB2483474 A GB 2483474A GB 2483474 A GB2483474 A GB 2483474A GB 1436066 A GB1436066 A GB 1436066A
Authority
GB
United Kingdom
Prior art keywords
self
restoring
elements
current limiting
limiting device
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
GB2483474A
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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
Priority claimed from JP48065112A external-priority patent/JPS5012554A/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB1436066A publication Critical patent/GB1436066A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H87/00—Protective devices in which a current flowing through a liquid or solid is interrupted by the evaporation of the liquid or by the melting and evaporation of the solid when the current becomes excessive, the circuit continuity being reestablished on cooling

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Fuses (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

1436066 Self-restoring fuses MITSUBISHI DENKI KK 5 June 1974 [8 June 1973] 24834/74 Heading H2G A self-restoring current limiting device comprises at least one pair of self-restoring elements 10a, 10b each including a pair of terminal members 12, 14 interconnected by electrically conductive material 32 such as sodium, potassium or alloys of these, which vaporizes on overcurrents and depresses pistons 34 in buffer chambers 36, and communicating tubes 40a, 40b filled with said material 32 interconnecting corresponding terminals of the elements 10a, 10b to permit circulation of the said material, at least one of the communicating tubes being fitted with cooling fins 42. An electromagnetic pump 46 may be disposed to circulate the material 32 and cooling may be assisted by an electric blower (not shown). To increase the voltage withstand, any number of pairs of elements may be series connected and may have pressure buffer chambers such as 36, filled with inert gas, disposed in the pumping and connecting blocks 44a, 44b.
GB2483474A 1973-06-08 1974-06-05 Self-restoring current limiting device Expired GB1436066A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP48065112A JPS5012554A (en) 1973-06-08 1973-06-08
US475252A US3902150A (en) 1973-06-08 1974-05-31 Self-restoring type current limiting device

Publications (1)

Publication Number Publication Date
GB1436066A true GB1436066A (en) 1976-05-19

Family

ID=26406241

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2483474A Expired GB1436066A (en) 1973-06-08 1974-06-05 Self-restoring current limiting device

Country Status (4)

Country Link
US (1) US3902150A (en)
CH (1) CH564846A5 (en)
FR (1) FR2232831B1 (en)
GB (1) GB1436066A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991396A (en) * 1975-05-07 1976-11-09 General Electric Company Electric circuit protector comprising parallel-connected liquid-metal current-limiting devices
US4024488A (en) * 1975-12-17 1977-05-17 Terasaki Denki Sangyo Kabushiki Kaisha Self-restoring type current limiting device
US4268813A (en) * 1979-09-17 1981-05-19 B/K Patent Development Resettable thermal cut-off switch
US5051649A (en) * 1989-09-08 1991-09-24 John F. Waymouth Intellectual Property And Education Trust Arc discharge lamp with liquid metal and heating means
US5666810A (en) * 1994-12-12 1997-09-16 Chrysler Corporation Electro-thermal actuator system
DE19903837B4 (en) * 1999-02-01 2004-02-19 Moeller Gmbh Self-recovering current limiting device with liquid metal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB391436A (en) * 1931-09-25 1933-04-25 William James Davy Improvements in or relating to electrical cut-outs
US3389360A (en) * 1967-04-19 1968-06-18 Gen Electric Change of state current limiter having flat plate construction
US3599137A (en) * 1968-07-05 1971-08-10 Mitsubishi Electric Corp Current limiting device
US3644860A (en) * 1969-04-24 1972-02-22 Mitsubishi Electric Corp Self-restoring current limiter
JPS5024013B1 (en) * 1970-12-16 1975-08-12

Also Published As

Publication number Publication date
FR2232831B1 (en) 1977-09-30
FR2232831A1 (en) 1975-01-03
CH564846A5 (en) 1975-07-31
US3902150A (en) 1975-08-26
DE2427472B2 (en) 1975-08-21
DE2427472A1 (en) 1974-12-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940604