EP2256778A3 - Electric switching device with a thermal actuator - Google Patents

Electric switching device with a thermal actuator Download PDF

Info

Publication number
EP2256778A3
EP2256778A3 EP10004302A EP10004302A EP2256778A3 EP 2256778 A3 EP2256778 A3 EP 2256778A3 EP 10004302 A EP10004302 A EP 10004302A EP 10004302 A EP10004302 A EP 10004302A EP 2256778 A3 EP2256778 A3 EP 2256778A3
Authority
EP
European Patent Office
Prior art keywords
strip
bracket
switching device
thermal actuator
electric switching
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
EP10004302A
Other languages
German (de)
French (fr)
Other versions
EP2256778B1 (en
EP2256778A2 (en
Inventor
Klaus Zimmer
Ralf Dipl.-Ing. Weber
Alexander Dipl.-Ing. Orban
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.)
ABB AG Germany
Original Assignee
ABB AG Germany
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 ABB AG Germany filed Critical ABB AG Germany
Publication of EP2256778A2 publication Critical patent/EP2256778A2/en
Publication of EP2256778A3 publication Critical patent/EP2256778A3/en
Application granted granted Critical
Publication of EP2256778B1 publication Critical patent/EP2256778B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • 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
    • H01H71/08—Terminals; Connections
    • 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
    • H01H71/40—Combined electrothermal and 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
    • H01H71/14—Electrothermal mechanisms
    • H01H71/145—Electrothermal mechanisms using shape memory materials
    • 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
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

The switch (1) has a tripping device comprising a strip (2) made from thermal bimetal and shape memory alloy. The strip is fastened to a free end of a retaining bracket (4) supported at a support end in a movable manner. The strip stays in effective connection with a latch (8), and a current path runs between input and output terminals (9, 10). The terminal (9) and a fastening end (3) of the strip are connected over a conductor piece (11) i.e. conductor strip, that has higher conductivity than the bracket, where the bracket is made from steel and the conductor piece is made from copper.
EP10004302A 2009-05-30 2010-04-22 Electric switching device with a thermal actuator Active EP2256778B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009023557A DE102009023557B3 (en) 2009-05-30 2009-05-30 Electrical switch i.e. circuit breaker, has strip fastened to free end of retaining bracket and comprising fastening end, and input terminal connected with fastening end over conductor piece that has higher conductivity than bracket

Publications (3)

Publication Number Publication Date
EP2256778A2 EP2256778A2 (en) 2010-12-01
EP2256778A3 true EP2256778A3 (en) 2011-03-23
EP2256778B1 EP2256778B1 (en) 2011-11-23

Family

ID=42309157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004302A Active EP2256778B1 (en) 2009-05-30 2010-04-22 Electric switching device with a thermal actuator

Country Status (5)

Country Link
EP (1) EP2256778B1 (en)
CN (1) CN201629238U (en)
AT (1) ATE535005T1 (en)
DE (1) DE102009023557B3 (en)
ES (1) ES2377549T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009021773B4 (en) * 2009-05-18 2014-12-04 Abb Ag Thermal release and electrical switching device with a thermal release
EP2608233A1 (en) * 2011-12-23 2013-06-26 Abb Ag Electrical load interrupter for low voltage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4202122A1 (en) * 1992-01-27 1993-07-29 Kloeckner Moeller Gmbh Trigger for switch devices has thermal overcurrent trigger - uses current through U=shaped bimetallic strip to generate magnetic field for quick triggering
EP0616350A1 (en) * 1993-03-19 1994-09-21 CMC Carl Maier + Cie AG Automatic cutout
US5872495A (en) * 1997-12-10 1999-02-16 Siemens Energy & Automation, Inc. Variable thermal and magnetic structure for a circuitbreaker trip unit
DE102008006863A1 (en) * 2007-05-23 2009-01-22 Abb Ag Electrical service switching device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4202122A1 (en) * 1992-01-27 1993-07-29 Kloeckner Moeller Gmbh Trigger for switch devices has thermal overcurrent trigger - uses current through U=shaped bimetallic strip to generate magnetic field for quick triggering
EP0616350A1 (en) * 1993-03-19 1994-09-21 CMC Carl Maier + Cie AG Automatic cutout
US5872495A (en) * 1997-12-10 1999-02-16 Siemens Energy & Automation, Inc. Variable thermal and magnetic structure for a circuitbreaker trip unit
DE102008006863A1 (en) * 2007-05-23 2009-01-22 Abb Ag Electrical service switching device

Also Published As

Publication number Publication date
ATE535005T1 (en) 2011-12-15
EP2256778B1 (en) 2011-11-23
DE102009023557B3 (en) 2010-08-05
EP2256778A2 (en) 2010-12-01
ES2377549T3 (en) 2012-03-28
CN201629238U (en) 2010-11-10

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