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ZA756056B - An improvement in or relating to manually operable circuit interrupter with automatic current overload protection - Google Patents

An improvement in or relating to manually operable circuit interrupter with automatic current overload protection

Info

Publication number
ZA756056B
ZA756056B ZA00756056A ZA756056A ZA756056B ZA 756056 B ZA756056 B ZA 756056B ZA 00756056 A ZA00756056 A ZA 00756056A ZA 756056 A ZA756056 A ZA 756056A ZA 756056 B ZA756056 B ZA 756056B
Authority
ZA
South Africa
Prior art keywords
relating
improvement
manually operable
overload protection
circuit interrupter
Prior art date
Application number
ZA00756056A
Inventor
E Richards
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ZA756056B publication Critical patent/ZA756056B/en

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
    • H01H71/505—Latching devices between operating and release mechanism
    • H01H2071/508—Latching devices between operating and release mechanism with serial latches, e.g. primary latch latched by secondary latch for requiring a smaller trip force
    • 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
    • H01H71/505—Latching devices between operating and release mechanism
    • 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
ZA00756056A 1974-10-09 1975-09-23 An improvement in or relating to manually operable circuit interrupter with automatic current overload protection ZA756056B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US513371A US3930213A (en) 1974-10-09 1974-10-09 Manually operable circuit interrupter with automatic current overload protection

Publications (1)

Publication Number Publication Date
ZA756056B true ZA756056B (en) 1976-09-29

Family

ID=24042985

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00756056A ZA756056B (en) 1974-10-09 1975-09-23 An improvement in or relating to manually operable circuit interrupter with automatic current overload protection

Country Status (5)

Country Link
US (1) US3930213A (en)
BR (1) BR7506495A (en)
CA (1) CA1044288A (en)
GB (1) GB1515749A (en)
ZA (1) ZA756056B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7813109U1 (en) * 1976-12-16 1979-05-31 Fong, Lee Wen, Taichung (China/ Taiwan) Magnetic switch
US4146855A (en) * 1977-09-06 1979-03-27 Square D Company Low profile multi-pole circuit breaker having multiple toggle springs
DE2818898C2 (en) * 1978-04-27 1984-02-09 Lee, Wen-Fong, Taichung Magnetic switch
FR2448216A1 (en) * 1979-01-31 1980-08-29 Telemecanique Electrique MANUAL THERMAL AND MAGNETIC TRIP SWITCH
US5278373A (en) * 1991-10-18 1994-01-11 Square D Company Current limiting circuit breaker
US6262644B1 (en) * 2000-03-08 2001-07-17 General Electric Company Latch resetting arrangement
DE10139917A1 (en) * 2001-08-14 2003-02-27 Abb Patent Gmbh Switch lock for an electrical switching device, in particular for a motor protection switch

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473901A (en) * 1947-07-31 1949-06-21 Westinghouse Electric Corp Push button operated circuit interrupter
US3179768A (en) * 1962-05-03 1965-04-20 Gen Electric Circuit breaker with mechanically isolated trip mechanism

Also Published As

Publication number Publication date
GB1515749A (en) 1978-06-28
CA1044288A (en) 1978-12-12
US3930213A (en) 1975-12-30
BR7506495A (en) 1976-08-17

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