GB1176409A - Improvements in Current-Limiting Circuit Breakers - Google Patents

Improvements in Current-Limiting Circuit Breakers

Info

Publication number
GB1176409A
GB1176409A GB50248/67A GB5024867A GB1176409A GB 1176409 A GB1176409 A GB 1176409A GB 50248/67 A GB50248/67 A GB 50248/67A GB 5024867 A GB5024867 A GB 5024867A GB 1176409 A GB1176409 A GB 1176409A
Authority
GB
United Kingdom
Prior art keywords
contacts
slot
plate
handle
operating mechanism
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
GB50248/67A
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 GB1176409A publication Critical patent/GB1176409A/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
    • 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

Abstract

1,176,409. Automatic circuit breakers; electromagnetic switches. GENERAL ELECTRIC CO. 6 Nov., 1967 [23 Nov., 1966], No. 50248/67. Heading H1N. The contact rod 37 of an automatic circuit breaker is decoupled from an operating mechanism by current responsive means so that the contacts can move rapidly to open position independently of the operating mechanism, providing a current limiting action. An operating handle 44 is coupled to a forked lever 48 by overcentre tension springs 49. A stud 60 on a pivoted plate 58 co-operates with the forked lever 48 so that as handle 44 is moved plate 58 snaps from one position to another. A pivoted member 66 is coupled to the contact rod 37 and has pins 69, 70 projecting into a slot in plate 58. A spring 72 normally holds pin 70 in the downturned end of the slot so that member 66 moves with plate 58 to open and close the contacts as handle 44 is moved. If a heavy overcurrent occurs an electromagnet (29) (Fig. 1, not shown) draws the rod 37 rapidly to the left; spring 72 is overcome and pin 70 moves out of the end of the slot; thereafter spring 72 is effective to draw member 66 and the contacts to the left to fully separate the contacts. The contacts have a degree of overtravel such that they do not separate until pin 70 has left the end of the slot so that once they separate the contacts must move to the fully open position. If a small overcurrent occurs a bimetal strip (24) (Fig. 1, not shown) releases a latch 62 to trip the operating mechanism in the usual manner.
GB50248/67A 1966-11-23 1967-11-06 Improvements in Current-Limiting Circuit Breakers Expired GB1176409A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US596692A US3384846A (en) 1966-11-23 1966-11-23 Current limiting circuit breaker mechanism

Publications (1)

Publication Number Publication Date
GB1176409A true GB1176409A (en) 1970-01-01

Family

ID=24388304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50248/67A Expired GB1176409A (en) 1966-11-23 1967-11-06 Improvements in Current-Limiting Circuit Breakers

Country Status (6)

Country Link
US (1) US3384846A (en)
JP (1) JPS4715665B1 (en)
DE (1) DE1588259C3 (en)
ES (1) ES346888A1 (en)
FR (1) FR1545159A (en)
GB (1) GB1176409A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPS53120774A (en) * 1977-03-31 1978-10-21 Masahiro Furusawa Metal mold for blow molding
FR2538160B1 (en) * 1982-12-20 1985-12-13 Telemecanique Electrique CONTACTOR APPARATUS WITH CONTROLLED ELECTROMAGNETIC ACTUATION AND WITH AUTOMATIC OPENING ON THE APPEARANCE OF OVERLOADS
NL8703172A (en) * 1987-12-31 1989-07-17 Holec Syst & Componenten SWITCH, ESPECIALLY FOR USE AS A SWITCH.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2601484A (en) * 1949-11-16 1952-06-24 Ite Circuit Breaker Ltd Blow open, blow closed circuit breaker
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
DE1588259C3 (en) 1979-02-22
FR1545159A (en) 1968-11-08
DE1588259B2 (en) 1978-06-29
ES346888A1 (en) 1969-01-01
DE1588259A1 (en) 1970-12-17
US3384846A (en) 1968-05-21
JPS4715665B1 (en) 1972-05-10

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