FR2409594A1 - Protective disconnector with bimetal switch shunting release coil - opens switch when overload occurs and thereby triggers release - Google Patents

Protective disconnector with bimetal switch shunting release coil - opens switch when overload occurs and thereby triggers release

Info

Publication number
FR2409594A1
FR2409594A1 FR7832487A FR7832487A FR2409594A1 FR 2409594 A1 FR2409594 A1 FR 2409594A1 FR 7832487 A FR7832487 A FR 7832487A FR 7832487 A FR7832487 A FR 7832487A FR 2409594 A1 FR2409594 A1 FR 2409594A1
Authority
FR
France
Prior art keywords
release
disconnector
coil
switch
protective
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
FR7832487A
Other languages
French (fr)
Other versions
FR2409594B3 (en
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri AG Germany
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri 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 BBC Brown Boveri AG Switzerland, BBC Brown Boveri AG Germany filed Critical BBC Brown Boveri AG Switzerland
Publication of FR2409594A1 publication Critical patent/FR2409594A1/en
Application granted granted Critical
Publication of FR2409594B3 publication Critical patent/FR2409594B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H01H9/42—Impedances connected with contacts

Landscapes

  • Thermally Actuated Switches (AREA)
  • Relay Circuits (AREA)

Abstract

The disconnector, with electromagnetic release, is triggered by short circuits and overloads. A bimetal element is connected in parallel with the release's coil and is held rigidly at one end and free to move at the other the free end carrying a contact. When an overload occurs the bimetal element snaps open rapidly thereby increasing the current through the release's coil and causing the disconnector to open. (The coil's resistance is high). A PTC or NTC resistor may be connected in series with the bimetal element.
FR7832487A 1977-11-18 1978-11-17 Protective disconnector with bimetal switch shunting release coil - opens switch when overload occurs and thereby triggers release Granted FR2409594A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772751451 DE2751451A1 (en) 1977-11-18 1977-11-18 ELECTRIC SWITCHING DEVICE

Publications (2)

Publication Number Publication Date
FR2409594A1 true FR2409594A1 (en) 1979-06-15
FR2409594B3 FR2409594B3 (en) 1981-08-14

Family

ID=6023981

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7832487A Granted FR2409594A1 (en) 1977-11-18 1978-11-17 Protective disconnector with bimetal switch shunting release coil - opens switch when overload occurs and thereby triggers release

Country Status (3)

Country Link
BE (1) BE872089A (en)
DE (1) DE2751451A1 (en)
FR (1) FR2409594A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9058951B2 (en) 2012-01-19 2015-06-16 Siemens Aktiengesellschaft Electrical switch
US9543088B2 (en) 2011-12-19 2017-01-10 Sma Solar Technology Ag Circuit arrangement for suppressing an arc occurring over a contact gap of a switching member

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5864458A (en) * 1995-09-14 1999-01-26 Raychem Corporation Overcurrent protection circuits comprising combinations of PTC devices and switches
US5666254A (en) * 1995-09-14 1997-09-09 Raychem Corporation Voltage sensing overcurrent protection circuit
US5737160A (en) * 1995-09-14 1998-04-07 Raychem Corporation Electrical switches comprising arrangement of mechanical switches and PCT device
US5689395A (en) * 1995-09-14 1997-11-18 Raychem Corporation Overcurrent protection circuit
EP2913836A1 (en) * 2014-02-28 2015-09-02 Siemens Aktiengesellschaft Thermal trip device of a thermal magnetic circuit breaker having a resistor element, thermal magnetic circuit breaker and switching device for interrupting a current flow and method for protecting an electrical circuit from damage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9543088B2 (en) 2011-12-19 2017-01-10 Sma Solar Technology Ag Circuit arrangement for suppressing an arc occurring over a contact gap of a switching member
US9058951B2 (en) 2012-01-19 2015-06-16 Siemens Aktiengesellschaft Electrical switch

Also Published As

Publication number Publication date
BE872089A (en) 1979-03-16
DE2751451A1 (en) 1979-05-23
FR2409594B3 (en) 1981-08-14

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