EP0177437A3 - Contact assembly for a power circuit breaker with current-dependant break - Google Patents

Contact assembly for a power circuit breaker with current-dependant break Download PDF

Info

Publication number
EP0177437A3
EP0177437A3 EP85730126A EP85730126A EP0177437A3 EP 0177437 A3 EP0177437 A3 EP 0177437A3 EP 85730126 A EP85730126 A EP 85730126A EP 85730126 A EP85730126 A EP 85730126A EP 0177437 A3 EP0177437 A3 EP 0177437A3
Authority
EP
European Patent Office
Prior art keywords
dependant
break
current
circuit breaker
power circuit
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.)
Granted
Application number
EP85730126A
Other languages
German (de)
Other versions
EP0177437A2 (en
EP0177437B1 (en
Inventor
Bernard Dimarco
Charles W. Stanford
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0177437A2 publication Critical patent/EP0177437A2/en
Publication of EP0177437A3 publication Critical patent/EP0177437A3/en
Application granted granted Critical
Publication of EP0177437B1 publication Critical patent/EP0177437B1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H77/10—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 electrodynamic opening
    • H01H77/102—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 electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • H01H77/104—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 electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement with a stable blow-off position

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
EP85730126A 1984-09-28 1985-09-17 Contact assembly for a power circuit breaker with current-dependent break Expired EP0177437B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/656,150 US4594567A (en) 1984-09-28 1984-09-28 Circuit breaker contact arm assembly having a magnetic carrier
US656150 1984-09-28

Publications (3)

Publication Number Publication Date
EP0177437A2 EP0177437A2 (en) 1986-04-09
EP0177437A3 true EP0177437A3 (en) 1987-08-19
EP0177437B1 EP0177437B1 (en) 1989-12-06

Family

ID=24631854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85730126A Expired EP0177437B1 (en) 1984-09-28 1985-09-17 Contact assembly for a power circuit breaker with current-dependent break

Country Status (5)

Country Link
US (1) US4594567A (en)
EP (1) EP0177437B1 (en)
JP (1) JPS6185742A (en)
CA (1) CA1241684A (en)
DE (1) DE3574649D1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3637913A1 (en) * 1986-11-06 1988-05-19 Licentia Gmbh CURRENT ELECTRICAL SWITCHGEAR
US5361051A (en) * 1988-12-16 1994-11-01 Siemens Energy & Automation, Inc. Pivoting circuit breaker contact arm assembly
US5585609A (en) * 1994-09-28 1996-12-17 Siemens Energy & Automation, Inc. Circuit breaker with movable main contact multi-force-level biasing element
US5926081A (en) * 1997-09-23 1999-07-20 Siemens Energy & Automation, Inc. Circuit breaker having a cam structure which aids blow open operation
US5994988A (en) * 1997-09-23 1999-11-30 Siemens Energy & Automation, Inc. Movable contact structure for a circuit breaker, including crossbar and spring biased cam mechanism
US6252480B1 (en) * 2000-02-18 2001-06-26 Siemens Energy & Automation, Inc. Moving contact and crossbar assembly for a molded case circuit breaker
US6563407B2 (en) 2001-08-21 2003-05-13 Siemens Energy & Automation, Inc. Pivot joint for a movable contact arm in a molded case circuit breaker
ITBG20060053A1 (en) 2006-10-13 2008-04-14 Abb Service Srl LOW VOLTAGE DEVICE WITH MOBILE CREW WITH HIGH ELECTRODYNAMIC SEALING

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2128633A1 (en) * 1971-06-09 1973-01-04 Bbc Brown Boveri & Cie SELF-SWITCH WITH MAGNETIC AND ELECTRODYNAMIC SHORT-CIRCUIT RELEASE
EP0004801A2 (en) * 1978-03-31 1979-10-17 Merlin Gerin Circuit breaker with an electromagnetic device for a fast opening operation of the movable contact
US4409573A (en) * 1981-04-23 1983-10-11 Siemens-Allis, Inc. Electromagnetically actuated anti-rebound latch
DE3411275A1 (en) * 1983-03-28 1984-10-04 Siemens-Allis, Inc., Atlanta, Ga. CIRCUIT BREAKER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2185853B1 (en) * 1972-05-26 1977-12-30 Merlin Gerin
US3887888A (en) * 1973-04-04 1975-06-03 Arrow Hart Inc High current switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2128633A1 (en) * 1971-06-09 1973-01-04 Bbc Brown Boveri & Cie SELF-SWITCH WITH MAGNETIC AND ELECTRODYNAMIC SHORT-CIRCUIT RELEASE
EP0004801A2 (en) * 1978-03-31 1979-10-17 Merlin Gerin Circuit breaker with an electromagnetic device for a fast opening operation of the movable contact
US4409573A (en) * 1981-04-23 1983-10-11 Siemens-Allis, Inc. Electromagnetically actuated anti-rebound latch
DE3411275A1 (en) * 1983-03-28 1984-10-04 Siemens-Allis, Inc., Atlanta, Ga. CIRCUIT BREAKER

Also Published As

Publication number Publication date
CA1241684A (en) 1988-09-06
US4594567A (en) 1986-06-10
DE3574649D1 (en) 1990-01-11
JPS6185742A (en) 1986-05-01
EP0177437A2 (en) 1986-04-09
EP0177437B1 (en) 1989-12-06

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