EP0978858A3 - Circuit breaker - Google Patents

Circuit breaker Download PDF

Info

Publication number
EP0978858A3
EP0978858A3 EP99305863A EP99305863A EP0978858A3 EP 0978858 A3 EP0978858 A3 EP 0978858A3 EP 99305863 A EP99305863 A EP 99305863A EP 99305863 A EP99305863 A EP 99305863A EP 0978858 A3 EP0978858 A3 EP 0978858A3
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
load side
stationary contact
contact carrier
housing means
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
EP99305863A
Other languages
German (de)
French (fr)
Other versions
EP0978858A2 (en
EP0978858B1 (en
Inventor
Yukihide Yamada
Toshihiro Sekiguchi
Kazuya Aihara
Eietsu Sato
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to EP05015106A priority Critical patent/EP1600988A3/en
Publication of EP0978858A2 publication Critical patent/EP0978858A2/en
Publication of EP0978858A3 publication Critical patent/EP0978858A3/en
Application granted granted Critical
Publication of EP0978858B1 publication Critical patent/EP0978858B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/18—Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2016—Bridging contacts in which the two contact pairs commutate at substantially different moments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2472—Electromagnetic mechanisms with rotatable armatures
    • 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
    • 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
    • H01H9/02—Bases, casings, or covers
    • H01H9/0264—Protective covers for terminals
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Landscapes

  • Breakers (AREA)

Abstract

It is an object of the present invention to provide a circuit breaker excellent in safety by electrically insulating the trip unit from the main circuit, and capable of performing a proper wiping of the movable contact carrier, resulting in reduction of electrical resistance at the contacts. Further, a circuit breaker excellent in workability in assembling processes is also provided.
In the circuit breaker of the present invention, a housing means (22) contains a main circuit (100) including a power supply side stationary contact carrier (1) with a stationary contact (2), a movable contact carrier (4) with a power supply side movable contact (3) and a load side movable contact (5), and a load side stationary contact carrier (7) with a load side stationary contact (6). The housing means is made of insulating material and disposed in the casing (40) also made of insulating material. The circuit breaker includes a make-and-break mechanism (30), a tripping mechanism (50). The tripping mechanism (50) is unitedly connected to the load side stationary contact carrier (7) and to the load side terminal (7c) therebetween. The tripping means (50) includes a converting mechanism (51) for converting electromagnetic force to mechanical force for tripping, which is supported on the housing means (22) and is electrically insulated from the main circuit (100). The make-and-break mechanism (30) is mounted on the housing means (22) and is electrically insulated from the main circuit (100).
EP19990305863 1998-08-04 1999-07-23 Circuit breaker Expired - Lifetime EP0978858B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05015106A EP1600988A3 (en) 1998-08-04 1999-07-23 Circuit breaker

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP22009498A JP3721266B2 (en) 1998-08-04 1998-08-04 Circuit breaker
JP22009498 1998-08-04

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP05015106A Division EP1600988A3 (en) 1998-08-04 1999-07-23 Circuit breaker

Publications (3)

Publication Number Publication Date
EP0978858A2 EP0978858A2 (en) 2000-02-09
EP0978858A3 true EP0978858A3 (en) 2000-10-25
EP0978858B1 EP0978858B1 (en) 2006-04-12

Family

ID=16745841

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05015106A Withdrawn EP1600988A3 (en) 1998-08-04 1999-07-23 Circuit breaker
EP19990305863 Expired - Lifetime EP0978858B1 (en) 1998-08-04 1999-07-23 Circuit breaker

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05015106A Withdrawn EP1600988A3 (en) 1998-08-04 1999-07-23 Circuit breaker

Country Status (3)

Country Link
EP (2) EP1600988A3 (en)
JP (1) JP3721266B2 (en)
DE (1) DE69930795T2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10013161B4 (en) * 2000-03-17 2004-02-05 Aeg Niederspannungstechnik Gmbh & Co Kg Combined tripping device for a circuit breaker
DE10150550C1 (en) * 2001-10-12 2002-12-19 Moeller Gmbh Contact device for current-limiting protection switch has electrodynamically-operated rotary contact bridge with coupled contact spring pairs preventing rebound
DE10219022B3 (en) * 2002-04-27 2004-03-18 Moeller Gmbh Contact arrangement for current-limiting circuit breakers
JP4807963B2 (en) * 2005-04-18 2011-11-02 日東工業株式会社 Circuit breaker for wiring
KR100662752B1 (en) 2005-10-04 2007-01-02 엘에스산전 주식회사 Multi pole circuit breaker
ITMI20072204A1 (en) * 2007-11-21 2009-05-22 Abb Spa DOUBLE INTERRUPTION UNI-POLAR OR MULTI-POLAR INTERRUPTION DEVICE
KR101141537B1 (en) * 2011-01-03 2012-05-04 엘에스산전 주식회사 Movable contactor assembly for current limiting circuit breaker
DE102011076118A1 (en) * 2011-05-19 2012-11-22 Siemens Ag Contact arm for opening or closing electric circuit in power switch utilized for switching electric current, has contact carrier and piece swingable between two positions, where contact surface comprises uneven profile between piece and pad
CN103077856B (en) * 2011-10-25 2015-03-04 施耐德电器工业公司 Asymmetric double-contact breaker
KR200472735Y1 (en) * 2012-11-01 2014-05-20 엘에스산전 주식회사 Movable contact arm for molded case circuit breaker and movable contact arm assembly
JP6307373B2 (en) * 2014-07-18 2018-04-04 株式会社日立産機システム Circuit breaker wipe amount measuring method and wipe amount measuring device
KR102464650B1 (en) * 2016-05-03 2022-11-10 엘에스일렉트릭(주) Current limiting device of circuit breaker
CN108987138B (en) * 2017-06-01 2024-02-02 泰科电子(深圳)有限公司 Electrical contact system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2445011A1 (en) * 1978-12-22 1980-07-18 Fligue Wladimir High current electromagnetic relay for safety circuit - has ferromagnetic screens mounted on high current conductor to prevent operation by parasitic currents
EP0518791A1 (en) * 1991-06-14 1992-12-16 Schneider Electric Sa Electromagnet trip device with percussion-pin
FR2682531A1 (en) * 1991-10-15 1993-04-16 Merlin Gerin Multi-pole circuit breaker with single-pole units
EP0788128A2 (en) * 1996-02-02 1997-08-06 Hitachi, Ltd. Circuit breaker and manufacturing method therefor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD142621A1 (en) * 1979-03-23 1980-07-02 Dietrich Amft BRIDGE CONTACT ARRANGEMENT FOR HAND SWITCH WITH ASYMMETRIC SWITCH OPENING
US4614851A (en) * 1985-02-21 1986-09-30 Eaton Corporation Contact sequencing arrangement for rotary double break switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2445011A1 (en) * 1978-12-22 1980-07-18 Fligue Wladimir High current electromagnetic relay for safety circuit - has ferromagnetic screens mounted on high current conductor to prevent operation by parasitic currents
EP0518791A1 (en) * 1991-06-14 1992-12-16 Schneider Electric Sa Electromagnet trip device with percussion-pin
FR2682531A1 (en) * 1991-10-15 1993-04-16 Merlin Gerin Multi-pole circuit breaker with single-pole units
EP0788128A2 (en) * 1996-02-02 1997-08-06 Hitachi, Ltd. Circuit breaker and manufacturing method therefor

Also Published As

Publication number Publication date
EP1600988A2 (en) 2005-11-30
JP3721266B2 (en) 2005-11-30
EP0978858A2 (en) 2000-02-09
DE69930795T2 (en) 2006-11-30
JP2000057930A (en) 2000-02-25
EP1600988A3 (en) 2006-08-23
DE69930795D1 (en) 2006-05-24
EP0978858B1 (en) 2006-04-12

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