GB1137325A - Improvements in electrical circuit breakers - Google Patents

Improvements in electrical circuit breakers

Info

Publication number
GB1137325A
GB1137325A GB7609/67A GB760967A GB1137325A GB 1137325 A GB1137325 A GB 1137325A GB 7609/67 A GB7609/67 A GB 7609/67A GB 760967 A GB760967 A GB 760967A GB 1137325 A GB1137325 A GB 1137325A
Authority
GB
United Kingdom
Prior art keywords
conductor
pole
pieces
turn
armature
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
GB7609/67A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1137325A publication Critical patent/GB1137325A/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
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms

Landscapes

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

Abstract

1,137,325. Automatic circuit-breakers. GENERAL ELECTRIC CO. 17 Feb., 1967 [17 Feb., 1966], No. 7609/67. Heading H1N. A tripping device for a circuit-breaker comprises a magnetic core 60 surrounding a current conductor 38 and having two pairs of pole pieces 66, 68, and an armature 54 which is attracted to the pole-pieces 66 to turn a trip bar 46 when a large overload current occurs in the conductor 38. A bimetallic strip 57 is secured to the conductor 38 and is heated by the conductor so that it may move the armature 54 towards the pole-pieces 66 to cause tripping when an overload current of an intermediate value occurs. A further bimetallic strip 50 is carried by a short-circuited single turn winding 64 on the core 60 and is heated by the winding 64 to turn the trip bar 46 under relatively low overload conditions.
GB7609/67A 1966-02-17 1967-02-17 Improvements in electrical circuit breakers Expired GB1137325A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US528276A US3353128A (en) 1966-02-17 1966-02-17 Thermally and magnetically responsive electrical control device

Publications (1)

Publication Number Publication Date
GB1137325A true GB1137325A (en) 1968-12-18

Family

ID=24104987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7609/67A Expired GB1137325A (en) 1966-02-17 1967-02-17 Improvements in electrical circuit breakers

Country Status (3)

Country Link
US (1) US3353128A (en)
DE (1) DE1588224A1 (en)
GB (1) GB1137325A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997857A (en) * 1975-09-11 1976-12-14 Westinghouse Electric Corporation Integral magnetic trip and latch for a circuit interrupter
US4147999A (en) * 1977-12-19 1979-04-03 Westinghouse Electric Corp. Circuit breaker
US4503408A (en) * 1982-11-10 1985-03-05 Westinghouse Electric Corp. Molded case circuit breaker apparatus having trip bar with flexible armature interconnection
US6239677B1 (en) * 2000-02-10 2001-05-29 General Electric Company Circuit breaker thermal magnetic trip unit
US8093965B2 (en) * 2008-12-03 2012-01-10 Schneider Electric USA, Inc. Add-on trip module for multi-pole circuit breaker
US8093964B2 (en) * 2008-12-29 2012-01-10 Schneider Electric USA, Inc. Add-on trip module for multi-pole circuit breaker

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981811A (en) * 1957-08-22 1961-04-25 Gen Electric Circuit breaker

Also Published As

Publication number Publication date
DE1588224A1 (en) 1970-08-13
US3353128A (en) 1967-11-14

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