GB1196797A - Improvements in Current-Limiting Electric Circuit Breakers. - Google Patents

Improvements in Current-Limiting Electric Circuit Breakers.

Info

Publication number
GB1196797A
GB1196797A GB50249/67A GB5024967A GB1196797A GB 1196797 A GB1196797 A GB 1196797A GB 50249/67 A GB50249/67 A GB 50249/67A GB 5024967 A GB5024967 A GB 5024967A GB 1196797 A GB1196797 A GB 1196797A
Authority
GB
United Kingdom
Prior art keywords
plates
open
contacts
spring
pin
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
GB50249/67A
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 GB1196797A publication Critical patent/GB1196797A/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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/06—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electromagnetic opening
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Landscapes

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

Abstract

1,196,797. Automatic circuit breakers. GENERAL ELECTRIC CO. 6 Nov., 1967 [23 Nov., 1966], No. 50249/67. Heading H1N. The contact rod 68 of an automatic circuit breaker is decoupled from an operating mechanism 33 by current responsive means so that the contacts 18 can move rapidly to open position independently of the operating mechanism, providing a current limiting action. An operating handle 52 is coupled by overcentre mechanism to a pair of plates 45 pivoted at 46 to a frame. A fixed pin 75 provides end stops for the pivotal movement of plates 45. A member 73 is pivotally and slidably mounted on pin 75 and has a hooked part 84 biased into latching engagement with a roller 85, mounted on plates 45, by a spring 79. The member 73 is pivotally coupled to contact rod 68 at 71. Movement of plates 45 by handle 52 normally moves rod 68 between open and closed positions. In the event of a short circuit a solenoid 22 surrounding rod 68 moves the latter sharply to the left rotating member 73 about pin 75 against spring 79 so that member 73 is released by roller 85 and allowed to move independently of plates 45 to open the contacts. Spring 79 assists this movement. In the event of lower overloads a bimetal 54 or electromagnet 62 releases a latched arm 36 to trip the toggle linkage 33 and open the contacts in the conventional manner.
GB50249/67A 1966-11-23 1967-11-06 Improvements in Current-Limiting Electric Circuit Breakers. Expired GB1196797A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US596637A US3384845A (en) 1966-11-23 1966-11-23 Current-limiting electric circuit breaker

Publications (1)

Publication Number Publication Date
GB1196797A true GB1196797A (en) 1970-07-01

Family

ID=24388078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50249/67A Expired GB1196797A (en) 1966-11-23 1967-11-06 Improvements in Current-Limiting Electric Circuit Breakers.

Country Status (5)

Country Link
US (1) US3384845A (en)
DE (1) DE1588258A1 (en)
ES (1) ES346887A1 (en)
FR (1) FR1552224A (en)
GB (1) GB1196797A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1145959A (en) * 1967-03-09 1969-03-19 Ass Elect Ind Improvements relating to electric circuit breakers
US3492614A (en) * 1968-01-18 1970-01-27 Westinghouse Electric Corp Circuit breaker with thrust transmitting operating mechanism
US3488609A (en) * 1968-07-16 1970-01-06 Gen Electric Mechanism for current limiting circuit breaker
US3534305A (en) * 1968-11-21 1970-10-13 Ite Imperial Corp Current limiting circuit breaker
US3505622A (en) * 1968-11-21 1970-04-07 Ite Imperial Corp Current limiting circuit breaker with collapsible cradle structure
US3581253A (en) * 1969-10-15 1971-05-25 Gen Electric Armature-contact rod connection for current-limiting breaker
US3575676A (en) * 1969-11-04 1971-04-20 Gen Electric High-speed, high-current solenoid
FR2185853B1 (en) * 1972-05-26 1977-12-30 Merlin Gerin
US3983454A (en) * 1974-08-12 1976-09-28 Westinghouse Electric Corporation Distribution transformer secondary circuit breaker
US4146855A (en) * 1977-09-06 1979-03-27 Square D Company Low profile multi-pole circuit breaker having multiple toggle springs
US4488133A (en) * 1983-03-28 1984-12-11 Siemens-Allis, Inc. Contact assembly including spring loaded cam follower overcenter means
US4679016A (en) * 1986-01-08 1987-07-07 General Electric Company Interchangeable mechanism for molded case circuit breaker
US5416291A (en) * 1991-10-18 1995-05-16 Square D Current limiting circuit breaker operating mechanism including linkage
FR2757309B1 (en) * 1996-12-13 1999-01-29 Schneider Electric Sa SELECTIVE TRIP BLOCK FOR A MULTIPOLAR CIRCUIT BREAKER
US7145420B2 (en) * 2004-10-01 2006-12-05 Cleveland, Ohio Support structure for a circuit interrupter latch and circuit breaker employing the same
CN105244197B (en) * 2015-10-30 2017-04-19 南京鼎牌电器有限公司 Breaker contact structure and breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2601494A (en) * 1947-06-19 1952-06-24 Lipe Rollway Corp Ejector mechanism for automatic bar feeds
US3012118A (en) * 1958-10-29 1961-12-05 Ite Circuit Breaker Ltd Current limiting circuit breaker
US3315189A (en) * 1965-09-30 1967-04-18 Gen Electric Circuit breaker assembly

Also Published As

Publication number Publication date
DE1588258A1 (en) 1970-12-17
US3384845A (en) 1968-05-21
FR1552224A (en) 1969-01-03
ES346887A1 (en) 1969-01-01

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed