GB1484359A - Trip means for circuit breakers and circuit breakers incorporating such trip means - Google Patents

Trip means for circuit breakers and circuit breakers incorporating such trip means

Info

Publication number
GB1484359A
GB1484359A GB3900674A GB3900674A GB1484359A GB 1484359 A GB1484359 A GB 1484359A GB 3900674 A GB3900674 A GB 3900674A GB 3900674 A GB3900674 A GB 3900674A GB 1484359 A GB1484359 A GB 1484359A
Authority
GB
United Kingdom
Prior art keywords
circuit breaker
trip
compensating element
circuit breakers
bimetal strip
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
GB3900674A
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.)
Fuchs Electrical Industries Ltd
Original Assignee
Fuchs 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 Fuchs Electrical Industries Ltd filed Critical Fuchs Electrical Industries Ltd
Priority to GB3900674A priority Critical patent/GB1484359A/en
Publication of GB1484359A publication Critical patent/GB1484359A/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
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H01H71/162—Electrothermal mechanisms with bimetal element with compensation for 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
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

1484359 Automatic circuit breakers FUCHS ELECTRICAL INDUSTRIES (PTY) Ltd 6 Sept 1974 39006/74 Heading H1N A trip arrangement for a circuit breaker comprises a thermally sensitive bimetal strip 7 connected in series with a fixed and a movable contact 2, 3 of the circuit breaker, a magnetic material polepiece 21 mounted on the bimetal strip, and an armature 17 pivotally mounted on a temperature compensating element 16 which is connected to a latching member 11 latching the circuit breaker mechanism 15, the armature being attracted to the polepiece when overloadcurrent above a threshold value flows in the bimetal strip, to displace the latching member 11 via the compensating element 16 to trip the circuit breaker, and the bimetal strip 7 deflecting to displace the latching member 11 again via the compensating element 16 to trip the circuit breaker when a persistent overload current below the threshold value flows in it. The temperature compensating element 16 is also a bimetallic strip, and this deflects in sympathy with the bimetallic strip 7 under ambient temperatures to make the operation of the trip arrangement independent of ambient temperature.
GB3900674A 1974-09-06 1974-09-06 Trip means for circuit breakers and circuit breakers incorporating such trip means Expired GB1484359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3900674A GB1484359A (en) 1974-09-06 1974-09-06 Trip means for circuit breakers and circuit breakers incorporating such trip means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3900674A GB1484359A (en) 1974-09-06 1974-09-06 Trip means for circuit breakers and circuit breakers incorporating such trip means

Publications (1)

Publication Number Publication Date
GB1484359A true GB1484359A (en) 1977-09-01

Family

ID=10407037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3900674A Expired GB1484359A (en) 1974-09-06 1974-09-06 Trip means for circuit breakers and circuit breakers incorporating such trip means

Country Status (1)

Country Link
GB (1) GB1484359A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8872606B1 (en) 2013-04-23 2014-10-28 Eaton Corporation Bimetal and magnetic armature providing an arc splatter resistant offset therebetween, and circuit breaker including the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8872606B1 (en) 2013-04-23 2014-10-28 Eaton Corporation Bimetal and magnetic armature providing an arc splatter resistant offset therebetween, and circuit breaker including the same

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee