EP1148530A1 - Steckbarer leistungsschalter - Google Patents

Steckbarer leistungsschalter Download PDF

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Publication number
EP1148530A1
EP1148530A1 EP99974116A EP99974116A EP1148530A1 EP 1148530 A1 EP1148530 A1 EP 1148530A1 EP 99974116 A EP99974116 A EP 99974116A EP 99974116 A EP99974116 A EP 99974116A EP 1148530 A1 EP1148530 A1 EP 1148530A1
Authority
EP
European Patent Office
Prior art keywords
trip
circuit breaker
breaker body
operating member
safety
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.)
Withdrawn
Application number
EP99974116A
Other languages
English (en)
French (fr)
Inventor
Yasuo Kishimoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1148530A1 publication Critical patent/EP1148530A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • H01H71/126—Automatic release mechanisms with or without manual release actuated by dismounting of circuit breaker or removal of part of circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5866—Electric connections to or between contacts; Terminals characterised by the use of a plug and socket connector
    • 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
    • H01H73/06—Housings; Casings; Bases; Mountings
    • H01H73/08—Plug-in housings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches

Definitions

  • This invention relates to a circuit breaker, and in particular it relates to a safety trip apparatus which is installed in a plug-in type circuit breaker.
  • Figure 6 is a side cross-sectional view of essential portions showing the state in which a circuit breaker body of a conventional plug-in type circuit breaker shown in Japanese Published Unexamined Patent Application Hei 8-250009, for example, is installed on an installation base.
  • Figure 7 is a side cross-sectional view of essential portions showing the state in which the circuit breaker body of Figure 6 is removed.
  • the circuit breaker body 1 has plug-in contact terminals 3 which are connecting contact members inside a case made of a molded insulator, a power supply side terminal 4 and a load side terminal 5 which are each connected to a plug-in terminal 3, a switching contact (not shown) which is electrically connected between the power supply side terminal 4 and the load side terminal 5 and which opens and closes a circuit through which load current flows, a switching mechanism portion (not shown) which opens and closes the switching contact, a trip mechanism portion (not shown) which operates the switching mechanism portion when an overcurrent flows in the circuit, and a handle 6 which can manually operate the switching mechanism.
  • a trip shaft 30 which forms a portion of the trip mechanism portion is biased in the clockwise direction by a spring (not shown), and when an overcurrent flows in the circuit, it rotates (F1) by a prescribed amount in the counterclockwise direction and operates the switching mechanism portion.
  • 31 is a trip rod which is a trip operating member. One end 31a loosely engages the trip shaft 30, and the other end 31 b abuts against a projection 33 installed on the installation base 2.
  • 32 is a compression spring which biases the trip rod 31 towards the installation base 2.
  • Studs 11 for connecting the power supply side and the load side to external conductors 8 and connectors 13, which are connecting members for electrically connecting the studs 11 and the plug-in terminals 3 of the circuit breaker body 1 with a prescribed contact pressure from a contact spring 12, are installed on a base 7 which is made of a molded insulator and which forms the installation base 2.
  • This invention was made in order to solve such problems, and its object is to obtain a plug-in type circuit breaker which can easily perform switching operation even in a state in which the circuit breaker body has been removed.
  • a plug-in type circuit breaker is a plug-in type circuit breaker having a circuit breaker body with a switching contact which opens and closes a circuit in which a load current is flowing, a trip mechanism portion which opens the switching contact, and a connecting contact member which leads the load current to the circuit, an installation base on which the circuit breaker body is installed and which has a terminal member which is connected to an external conductor and which is connected by plugging in to the connecting contact member, and a safety trip apparatus which operates the trip mechanism portion before the terminal member and the connecting contact member separate and opens the switching contact when the circuit breaker body is removed from the installation base with the switching contact in a closed state, wherein the safety trip apparatus can be installed on and removed from the circuit breaker body, and switching operation of the circuit breaker body is possible when the safety trip apparatus is removed.
  • the safety trip apparatus has a trip operating member which engages with the trip mechanism portion, a compression spring which biases the trip operating member towards the installation base, and a case which houses the compression spring and the trip operating member, and in which when the safety trip apparatus is installed, it is secured to the circuit breaker body by a securing member.
  • a plug-in type circuit breaker having a circuit breaker body with a switching contact which opens and closes a circuit in which a load current is flowing, a trip mechanism portion which opens the switching contact, and a connecting contact member which leads the load current to the circuit, an installation base on which the circuit breaker body is installed and which has a terminal member which is connected to an external conductor and which is connected by plugging in to the connecting contact member, and a safety trip apparatus which has a safety trip function of operating the trip mechanism portion before the terminal member and the connecting contact member separate and opening the switching contact when the circuit breaker body is removed from the installation base with the switching contact in a closed state, wherein the safety trip apparatus has a trip operating member which engages with the trip mechanism portion, a compression spring which biases the trip operating member towards the installation base, and a case which houses the compression spring and the trip operating member, and if the trip operating member is rotated, it is possible to perform switching operation of the circuit breaker body by releasing the engagement between the trip operating member and the trip
  • Figure 1 is a longitudinal cross-sectional view of essential portions showing the state in which a circuit breaker body of a plug-in type circuit breaker according to a first embodiment of this invention is installed on an installation base.
  • 1-8, 11-13, and 30 are the same as in the explanation of the above-described conventional apparatus, so an explanation will be omitted.
  • Figure 2 is an enlarged view showing the installed state of a safety trip apparatus.
  • (a) is an enlarged side cross-sectional view
  • (b) is a plan view of (a)
  • (c) is an enlarged interior perspective view showing the state in which a trip rod and a case are interfit.
  • Figure 3 is a longitudinal cross-sectional view of essential portions showing an intermediate state during the removal of the circuit breaker body of Figure 1 from the installation base.
  • stud cover 14 is a stud cover which secures and insulates a stud 11.
  • the trip shaft 30 which forms a portion of a trip mechanism portion is biased in the clockwise direction by a spring (not shown), and when an overcurrent flows in a circuit, it rotates by a prescribed amount (F3) in the counterclockwise direction and operates a switching mechanism portion.
  • a safety trip apparatus is a safety trip apparatus. It is formed from a trip rod 21 which is a trip operating member, a compression spring 22, and a case 23. One end 21a of the trip rod 21 loosely engages with a pressing portion 30a of the trip shaft 30, and the other end 21b abuts a bush 24 installed on the installation base 2. A projection 21c which is integrally installed on the trip rod 21 loosely fits in a through hole 23a in the case 23, so the trip rod 21 is biased towards the installation base 2 by the compression spring 22.
  • the 25 is a rear cover which is a securing member. It is disposed on the bottom surface of the circuit breaker body 1, and it secures a case 23 of the safety trip apparatus 20 which is loosely inserted into an insertion hole 1a of the circuit breaker body 1.
  • the case 23 may be secured inside the insertion hole 1a of the circuit breaker body 1 by screws or the like, or the case 23 may be inserted and secured by a press fit or a snap fit or the like in the insertion hole 1a of the circuit breaker body 1.
  • Figure 4 is an enlarged cross-sectional view of the safety trip apparatus at the time of releasing its engagement with the trip mechanism portion.
  • (a) is an enlarged side cross-sectional view
  • (b) is a plan view of (a)
  • (c) is a enlarged interior perspective view showing the state in which the trip rod and the case interfit.
  • the projection 21c of the trip rod 21 fits into the recess 23c of the case 23, so the trip rod 21 becomes unable to rotate from this position, and in addition, the projection 21c is pressed into the recess 23c by the compression spring 22, so the state is fixed in which the engagement between the one end 21 a of the trip rod 21 and the pressing portion 30a of the trip shaft 30 is released.
  • the other end 21b of the trip shaft 21 can be pressed towards the trip shaft 30 against the pressing force of the compression spring 22 and rotated by approximately 90 in the opposite direction from the arrow by a screwdriver or the like.
  • a plug-in type circuit breaker formed in this manner is fixed in a state in which the engagement between the one end 21a of the trip rod 21 and the pressing portion 30a of the trip shaft 30 is released, so in a state in which the circuit breaker body 1 is removed, it is possible to carry out switching operation, so malfunctions do not take place even if vibrations which are generated when the switching portion is operated manually by the handle 6 are transmitted to the trip rod 21, and it is possible to carry out switching operation.
  • the safety trip apparatus 20 which is loosely inserted into the insertion hole 1 a of the circuit breaker body 1 in this manner has a structure such that it can be easily installed and removed by installation and removal of the rear cover 23.
  • Figure 5 is an enlarged view showing when the safety trip apparatus is removed. (a) is an enlarged side cross-sectional view, and (b) is a plan view of (a).
  • a safety trip apparatus in a state in which a circuit breaker body is removed, if a safety trip apparatus is removed, switching operation of the circuit breaker body can be carried out, and it can be additionally installed in a circuit breaker body in which a safety trip apparatus is not installed.
  • the safety trip apparatus can be easily installed and removed from the circuit breaker body by attaching and removing the rear cover.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
EP99974116A 1999-10-07 1999-10-07 Steckbarer leistungsschalter Withdrawn EP1148530A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/005518 WO2001027959A1 (fr) 1999-10-07 1999-10-07 Disjoncteur enfichable

Publications (1)

Publication Number Publication Date
EP1148530A1 true EP1148530A1 (de) 2001-10-24

Family

ID=14236937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99974116A Withdrawn EP1148530A1 (de) 1999-10-07 1999-10-07 Steckbarer leistungsschalter

Country Status (5)

Country Link
EP (1) EP1148530A1 (de)
KR (1) KR20010108005A (de)
CN (1) CN1329747A (de)
TW (1) TW430839B (de)
WO (1) WO2001027959A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1261007A1 (de) * 2001-05-22 2002-11-27 Gewiss S.P.A. Sicherheitsauslöser für entfernbaren Schutzschalter
WO2003098652A1 (fr) * 2002-05-22 2003-11-27 Mitsubishi Denki Kabushiki Kaisha Disjoncteur a insertion
US20130201608A1 (en) * 2012-02-07 2013-08-08 Patrick W. Mills Plug-in circuit breaker assembly including insulative retainers
EP2980827A1 (de) * 2014-08-01 2016-02-03 Schneider Electric USA, Inc. Positive haltesperre für schaltbrett zu schutzschalter
US11223200B2 (en) 2018-07-26 2022-01-11 Ripd Ip Development Ltd Surge protective devices, circuits, modules and systems including same
US11862967B2 (en) 2021-09-13 2024-01-02 Raycap, S.A. Surge protective device assembly modules
US11990745B2 (en) 2022-01-12 2024-05-21 Raycap IP Development Ltd Methods and systems for remote monitoring of surge protective devices

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101169468B (zh) * 2007-11-27 2010-06-02 天津市百利电气有限公司 板后插入式断路器特性检测试验装置
CN104701105B (zh) * 2015-03-05 2016-08-24 上海德布森电气有限公司 一种用于插入式断路器的安全脱扣辅助装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3008249C2 (de) * 1980-02-29 1984-04-12 Siemens AG, 1000 Berlin und 8000 München Schutzschalter mit einem von Hand bewegbaren Auslöseorgan
US4950848A (en) * 1989-09-22 1990-08-21 Westinghouse Electric Corp. Adjustable circuit breaker with draw out interlock
JP3399126B2 (ja) * 1994-12-28 2003-04-21 三菱電機株式会社 回路遮断器
JPH08250008A (ja) * 1995-03-13 1996-09-27 Terasaki Denki Sangyo Kk 差込型回路遮断器
JP3861401B2 (ja) * 1997-09-19 2006-12-20 富士電機機器制御株式会社 回路遮断器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0127959A1 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1261007A1 (de) * 2001-05-22 2002-11-27 Gewiss S.P.A. Sicherheitsauslöser für entfernbaren Schutzschalter
WO2003098652A1 (fr) * 2002-05-22 2003-11-27 Mitsubishi Denki Kabushiki Kaisha Disjoncteur a insertion
US20130201608A1 (en) * 2012-02-07 2013-08-08 Patrick W. Mills Plug-in circuit breaker assembly including insulative retainers
US8649160B2 (en) * 2012-02-07 2014-02-11 Eaton Corporation Plug-in circuit breaker assembly including insulative retainers
US9197040B2 (en) 2012-02-07 2015-11-24 Labinal, Llc Plug-in circuit breaker assembly including insulative retainers
EP2980827A1 (de) * 2014-08-01 2016-02-03 Schneider Electric USA, Inc. Positive haltesperre für schaltbrett zu schutzschalter
US9564280B2 (en) 2014-08-01 2017-02-07 Schneider Electric USA, Inc. Panel board to circuit breaker positive retention interlock
US11223200B2 (en) 2018-07-26 2022-01-11 Ripd Ip Development Ltd Surge protective devices, circuits, modules and systems including same
US11862967B2 (en) 2021-09-13 2024-01-02 Raycap, S.A. Surge protective device assembly modules
US11990745B2 (en) 2022-01-12 2024-05-21 Raycap IP Development Ltd Methods and systems for remote monitoring of surge protective devices

Also Published As

Publication number Publication date
CN1329747A (zh) 2002-01-02
WO2001027959A1 (fr) 2001-04-19
TW430839B (en) 2001-04-21
KR20010108005A (ko) 2001-12-07

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