EP0801408A3 - Overload switching device for electrical apparatus - Google Patents

Overload switching device for electrical apparatus Download PDF

Info

Publication number
EP0801408A3
EP0801408A3 EP97103619A EP97103619A EP0801408A3 EP 0801408 A3 EP0801408 A3 EP 0801408A3 EP 97103619 A EP97103619 A EP 97103619A EP 97103619 A EP97103619 A EP 97103619A EP 0801408 A3 EP0801408 A3 EP 0801408A3
Authority
EP
European Patent Office
Prior art keywords
contacts
switching device
electrical apparatus
push button
switching stages
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
EP97103619A
Other languages
German (de)
French (fr)
Other versions
EP0801408A2 (en
EP0801408B1 (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.)
Lectra Trading AG
Original Assignee
Lectra Trading AG
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 Lectra Trading AG filed Critical Lectra Trading AG
Publication of EP0801408A2 publication Critical patent/EP0801408A2/en
Publication of EP0801408A3 publication Critical patent/EP0801408A3/en
Application granted granted Critical
Publication of EP0801408B1 publication Critical patent/EP0801408B1/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
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H37/5409—Bistable switches; Resetting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/504—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by thermal means
    • 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
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Control Of Electric Motors In General (AREA)
  • Electronic Switches (AREA)

Abstract

The thermal overload device has two switching stages each with fixed contacts [10,11] and a bridging contact [14] held by a spring element [15]. In line with the switching stages is a bimetallic element [12] that is heated by a unit [18] coupled into the electrical circuit. At a threshold temperature the bimetallic element inverts and displaces a plunger [16] to open the contacts. The device has a push button cap [26] inside of which is an indicator bulb [19] that has a electorial connections to one pair of contacts [10.11] that connect to the load. The switch may also be manually operated by pressing the push button.
EP97103619A 1996-03-15 1997-03-05 Overload switching device for electrical apparatus Expired - Lifetime EP0801408B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19610185A DE19610185C1 (en) 1996-03-15 1996-03-15 Thermal overload switch for electrical apparatus
DE19610185 1996-03-15

Publications (3)

Publication Number Publication Date
EP0801408A2 EP0801408A2 (en) 1997-10-15
EP0801408A3 true EP0801408A3 (en) 2000-07-26
EP0801408B1 EP0801408B1 (en) 2004-12-29

Family

ID=7788371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103619A Expired - Lifetime EP0801408B1 (en) 1996-03-15 1997-03-05 Overload switching device for electrical apparatus

Country Status (3)

Country Link
EP (1) EP0801408B1 (en)
AT (1) ATE286301T1 (en)
DE (2) DE19610185C1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10066512B3 (en) * 2000-07-30 2018-02-22 Dewertokin Gmbh Circuit arrangement for mains disconnection of seats and sleeping furniture
DE10037358B4 (en) * 2000-07-30 2015-01-15 Dewertokin Gmbh Circuit arrangement for mains disconnection of seats and sleeping furniture
EP1933349B1 (en) * 2006-12-13 2008-10-22 Lectra Trading AG Overload switchgear for electrical devices
JP6997685B2 (en) * 2018-07-31 2022-01-18 ボーンズ株式会社 Current breaker, safety circuit and rechargeable battery pack

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH244173A (en) * 1945-10-24 1946-08-31 Singer Mfg Co Thermostatic switch with signaling device.
US2839638A (en) * 1957-03-28 1958-06-17 Metals & Controls Corp Thermally responsive switch structures
US3258567A (en) * 1964-05-29 1966-06-28 Elmwood Sensors Thermostat and reset therefor
DE2625120A1 (en) * 1976-06-04 1977-12-08 Hofsass P ELECTRIC TEMPERATURE BREAKER
DE3701240A1 (en) * 1986-01-31 1987-08-06 Kienzler Ag G Thermostat
DE3802647A1 (en) * 1988-01-29 1989-08-03 Lectra Trading Ag Device for indicating the switching condition of an overload circuit breaker

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839637A (en) * 1957-04-08 1958-06-17 Metals & Controls Corp Thermally responsive device
DE3932604C1 (en) * 1989-09-29 1990-05-03 Schoeller & Co Elektrotechnische Fabrik Gmbh & Co, 6000 Frankfurt, De

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH244173A (en) * 1945-10-24 1946-08-31 Singer Mfg Co Thermostatic switch with signaling device.
US2839638A (en) * 1957-03-28 1958-06-17 Metals & Controls Corp Thermally responsive switch structures
US3258567A (en) * 1964-05-29 1966-06-28 Elmwood Sensors Thermostat and reset therefor
DE2625120A1 (en) * 1976-06-04 1977-12-08 Hofsass P ELECTRIC TEMPERATURE BREAKER
DE3701240A1 (en) * 1986-01-31 1987-08-06 Kienzler Ag G Thermostat
DE3802647A1 (en) * 1988-01-29 1989-08-03 Lectra Trading Ag Device for indicating the switching condition of an overload circuit breaker

Also Published As

Publication number Publication date
DE19610185C1 (en) 1997-04-10
ATE286301T1 (en) 2005-01-15
EP0801408A2 (en) 1997-10-15
EP0801408B1 (en) 2004-12-29
DE59712140D1 (en) 2005-02-03

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