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GB1233110A - - Google Patents

Info

Publication number
GB1233110A
GB1233110A GB1233110DA GB1233110A GB 1233110 A GB1233110 A GB 1233110A GB 1233110D A GB1233110D A GB 1233110DA GB 1233110 A GB1233110 A GB 1233110A
Authority
GB
United Kingdom
Prior art keywords
contacts
thermistor
bimetallic
overload
heading
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
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 filed Critical
Publication of GB1233110A publication Critical patent/GB1233110A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for DC applications
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/085—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current making use of a thermal sensor, e.g. thermistor, heated by the excess current

Landscapes

  • Thermistors And Varistors (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

1,233,110. Thermal switches. GENERAL ELECTRIC CO. Ltd. 1 Dec., 1969 [29 Nov., 1968], No. 56727/68. Heading H1N. [Also in Division H2] An overload protective device 20 comprises a positive temperature coefficient thermistor 21 connected in a protected circuit 23 and arranged to be self heated through its transition temperature when overload occurs. A bimetallic switch is operated by the heat produced and opens or closes contacts 26 to effect an alarm or control operation. One or both contacts 26 may be carried by bimetallic strips 24 held in thermal contact with the thermistor 21 by a tight-fitting sleeve 25 of insulating material, e.g. thermoplastic tubing, filled with thermosetting resin.
GB1233110D 1968-11-29 1968-11-29 Expired GB1233110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5672768 1968-11-29

Publications (1)

Publication Number Publication Date
GB1233110A true GB1233110A (en) 1971-05-26

Family

ID=10477383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1233110D Expired GB1233110A (en) 1968-11-29 1968-11-29

Country Status (2)

Country Link
FR (2) FR2024599A1 (en)
GB (1) GB1233110A (en)

Also Published As

Publication number Publication date
FR2024599A1 (en) 1970-08-28
FR2024598A1 (en) 1970-08-28

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees