ZA774B - Circuit breaker - Google Patents

Circuit breaker

Info

Publication number
ZA774B
ZA774B ZA770004A ZA774A ZA774B ZA 774 B ZA774 B ZA 774B ZA 770004 A ZA770004 A ZA 770004A ZA 774 A ZA774 A ZA 774A ZA 774 B ZA774 B ZA 774B
Authority
ZA
South Africa
Prior art keywords
circuit breaker
breaker
circuit
Prior art date
Application number
ZA770004A
Inventor
C Oster
J Tharp
Original Assignee
Square D 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 Square D Co filed Critical Square D Co
Publication of ZA774B publication Critical patent/ZA774B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/42—Impedances connected with contacts

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
ZA770004A 1974-04-29 1975-04-22 Circuit breaker ZA774B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/465,011 US3946346A (en) 1974-04-29 1974-04-29 Current limiting circuit breaker

Publications (1)

Publication Number Publication Date
ZA774B true ZA774B (en) 1977-03-30

Family

ID=23846159

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA770004A ZA774B (en) 1974-04-29 1975-04-22 Circuit breaker

Country Status (3)

Country Link
US (1) US3946346A (en)
GB (1) GB1511882A (en)
ZA (1) ZA774B (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5669745A (en) * 1979-11-10 1981-06-11 Terasaki Denki Sangyo Kk Circuit breaker
US4346357A (en) * 1979-12-17 1982-08-24 Gould Inc. Current-limiting circuit breaker adapter
US4680564A (en) * 1984-10-01 1987-07-14 Siemens-Allis, Inc. Multi-pole molded case circuit breaker with a common contact operating crossbar member
US4630017A (en) * 1984-10-01 1986-12-16 Siemens Energy & Automation, Inc. Magnetic structure for calibrating a circuit breaker
FR2573571B1 (en) * 1984-11-16 1987-01-09 Telemecanique Electrique CIRCUIT BREAKER WITH REMOTE OPENING AND CLOSING OF ITS CIRCUITS
DE3810977C2 (en) * 1988-03-28 1996-10-24 Siemens Ag Current-limiting switching device with electrodynamically opening switching elements
US4866225A (en) * 1988-09-08 1989-09-12 Siemens Energy & Automation, Inc. Insulated light weight metallic crossbar in polyphase circuit breaker assemblies for inhibiting arcing
GB9002678D0 (en) * 1990-02-07 1990-04-04 Mk Electric Ltd Improvements in or relating to electric switches
US5416291A (en) * 1991-10-18 1995-05-16 Square D Current limiting circuit breaker operating mechanism including linkage
US5223681A (en) * 1991-10-18 1993-06-29 Square D Company Current limiting circuit breaker with over-molded magnet and metal plates
US5749118A (en) * 1993-02-05 1998-05-12 Holland; Dewey T. Heated wiper blade
US5680081A (en) * 1994-01-13 1997-10-21 Square D Company Circuit breaker having double break mechanism
US5498847A (en) * 1994-01-13 1996-03-12 Square D Company Arc stack for a circuit breaker
US5504292A (en) * 1994-01-13 1996-04-02 Square D Company Arc stack for a circuit breaker
US5430419A (en) * 1994-01-13 1995-07-04 Square D Double break circuit breaker having improved secondary section
US5504291A (en) * 1994-02-14 1996-04-02 Square D Company Contact blade assembly for a circuit breaker
US5539167A (en) * 1994-02-14 1996-07-23 Square D. Company Blade suspension assemlby for a circuit breaker
US5500496A (en) * 1994-02-14 1996-03-19 Square D Company Handle assembly for a circuit breaker
US5424699A (en) * 1994-02-14 1995-06-13 Square D Company Blow-off terminal for a circuit breaker
US5608198A (en) * 1995-06-26 1997-03-04 Square D Company Circuit breaker arrangement for protection against electrical arcs
US5581063A (en) * 1995-06-26 1996-12-03 Square D Company Arc-resistant shield for protecting a movable contact carrier of a circuit breaker
US6034586A (en) * 1998-10-21 2000-03-07 Airpax Corporation, Llc Parallel contact circuit breaker
CN102347175B (en) * 2010-07-30 2013-07-03 上海良信电器股份有限公司 Electronic releaser for molded case circuit breaker
DE102014107950B4 (en) * 2014-06-05 2022-02-03 Wago Verwaltungsgesellschaft Mbh Connector assembly and release element for this
US9530593B1 (en) * 2015-08-19 2016-12-27 Carling Technologies, Inc. Electromagnetically assisted arc quench with pivoting permanent magnet

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136921A (en) * 1957-12-10 1964-06-09 Westinghouse Electric Corp Circuit breakers
US3663903A (en) * 1971-05-20 1972-05-16 Ite Imperial Corp Tripping system for circuit breaker

Also Published As

Publication number Publication date
GB1511882A (en) 1978-05-24
US3946346A (en) 1976-03-23

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