EP0821383A3 - Overcurrent trip unit for an electrical installation device, particularly for a circuit breaker - Google Patents

Overcurrent trip unit for an electrical installation device, particularly for a circuit breaker Download PDF

Info

Publication number
EP0821383A3
EP0821383A3 EP97112479A EP97112479A EP0821383A3 EP 0821383 A3 EP0821383 A3 EP 0821383A3 EP 97112479 A EP97112479 A EP 97112479A EP 97112479 A EP97112479 A EP 97112479A EP 0821383 A3 EP0821383 A3 EP 0821383A3
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
installation device
bimetallic strip
electrical installation
trip unit
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
EP97112479A
Other languages
German (de)
French (fr)
Other versions
EP0821383B1 (en
EP0821383A2 (en
Inventor
Gerhard Mössner
Heinz-Erich Dr. Popa
Joachim Becker
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 Patent GmbH
Original Assignee
ABB Patent GmbH
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 Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0821383A2 publication Critical patent/EP0821383A2/en
Publication of EP0821383A3 publication Critical patent/EP0821383A3/en
Application granted granted Critical
Publication of EP0821383B1 publication Critical patent/EP0821383B1/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
    • 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
    • H01H71/16—Electrothermal mechanisms with bimetal element

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The overcurrent release uses a thermal release with a bimetallic strip (12) exhibiting an additional snap-action movement upon heating. The bimetallic strip is secured at one end (19) so that its free end (24) is deflected further upon further heating after the snap-action movement. The bimetallic strip can be secured to the end of a yoke arm (18) of an electromagnetic release (11) extending parallel to the coil axis, with a pin (22) projecting from the yoke arm to provide a bridge between the latter and the bimetallic strip.
EP97112479A 1996-07-25 1997-07-19 Overcurrent trip unit for an electrical installation device, particularly for a circuit breaker Expired - Lifetime EP0821383B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19629960A DE19629960A1 (en) 1996-07-25 1996-07-25 Overcurrent release for an electrical installation device, especially for a circuit breaker
DE19629960 1996-07-25

Publications (3)

Publication Number Publication Date
EP0821383A2 EP0821383A2 (en) 1998-01-28
EP0821383A3 true EP0821383A3 (en) 1999-01-07
EP0821383B1 EP0821383B1 (en) 2003-06-04

Family

ID=7800758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97112479A Expired - Lifetime EP0821383B1 (en) 1996-07-25 1997-07-19 Overcurrent trip unit for an electrical installation device, particularly for a circuit breaker

Country Status (3)

Country Link
EP (1) EP0821383B1 (en)
AT (1) ATE242544T1 (en)
DE (2) DE19629960A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012200728A1 (en) * 2012-01-19 2013-07-25 Siemens Aktiengesellschaft Electric switch

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR732488A (en) * 1931-03-04 1932-09-21 Brown Thermal delayed-action tripping device comprising a bimetallic multi-branch element
US4165502A (en) * 1977-06-08 1979-08-21 Square D Company Current limiter assembly for a circuit breaker
EP0037490A1 (en) * 1980-04-03 1981-10-14 BROWN, BOVERI & CIE Aktiengesellschaft Mannheim Release system of an automatic circuit breaker for the interruption of a circuit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE496968C (en) * 1930-04-30 Aeg Overcurrent switch with electromagnetic and thermal release
FR1022813A (en) * 1950-03-01 1953-03-10 Snap action and delayed circuit breaker, operated by a bimetal
DE1036992B (en) * 1956-08-16 1958-08-21 Wickmann Werke Ag Overcurrent switch
US3265839A (en) * 1963-08-05 1966-08-09 Fasco Industries Thermally-operable circuit breaker
DE1763575A1 (en) * 1968-06-26 1971-11-25 Franz Jungels Thermally operated overcurrent switch
DE6913744U (en) * 1969-04-05 1969-07-24 Bbc Brown Boveri & Cie MAGNETIC TRIGGER FOR INSTALLATION SWITCH
DE2138438C3 (en) * 1971-07-31 1975-09-04 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Magnetic trip coil for miniature circuit breakers with U-shaped iron yoke
DE3471809D1 (en) * 1983-10-21 1988-07-07 Merlin Gerin Thermal and magnetic circuit breaker tripping mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR732488A (en) * 1931-03-04 1932-09-21 Brown Thermal delayed-action tripping device comprising a bimetallic multi-branch element
US4165502A (en) * 1977-06-08 1979-08-21 Square D Company Current limiter assembly for a circuit breaker
EP0037490A1 (en) * 1980-04-03 1981-10-14 BROWN, BOVERI & CIE Aktiengesellschaft Mannheim Release system of an automatic circuit breaker for the interruption of a circuit

Also Published As

Publication number Publication date
DE59710197D1 (en) 2003-07-10
EP0821383B1 (en) 2003-06-04
ATE242544T1 (en) 2003-06-15
DE19629960A1 (en) 1998-01-29
EP0821383A2 (en) 1998-01-28

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