EP0793248A3 - Safety fuse, in particular for armoured electrical resistance elements - Google Patents

Safety fuse, in particular for armoured electrical resistance elements Download PDF

Info

Publication number
EP0793248A3
EP0793248A3 EP96119859A EP96119859A EP0793248A3 EP 0793248 A3 EP0793248 A3 EP 0793248A3 EP 96119859 A EP96119859 A EP 96119859A EP 96119859 A EP96119859 A EP 96119859A EP 0793248 A3 EP0793248 A3 EP 0793248A3
Authority
EP
European Patent Office
Prior art keywords
resistance elements
safety fuse
electrical resistance
armoured
terminals
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
EP96119859A
Other languages
German (de)
French (fr)
Other versions
EP0793248B1 (en
EP0793248A2 (en
Inventor
Duilio Capraro
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.)
IRCA SpA Industria Resistenze Corazzate e Affini
Original Assignee
IRCA SpA Industria Resistenze Corazzate e Affini
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 IRCA SpA Industria Resistenze Corazzate e Affini filed Critical IRCA SpA Industria Resistenze Corazzate e Affini
Priority to SI9630413T priority Critical patent/SI0793248T1/en
Publication of EP0793248A2 publication Critical patent/EP0793248A2/en
Publication of EP0793248A3 publication Critical patent/EP0793248A3/en
Application granted granted Critical
Publication of EP0793248B1 publication Critical patent/EP0793248B1/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
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H01H2037/762—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit using a spring for opening the circuit when the fusible element melts

Abstract

A safety fuse, in particular for armoured resistance elements, characterised by comprising:
  • a bush (1) of dielectric material, internally housing two terminals (2,10) separated from each other and engagable by electrical conductors (16,15) of the resistance element (14), one (15) of said terminals being rigid with a metal block (11) retaining a metal slider (6) which is also in contact with the other terminal (16),
  • elastic means (12) being provided which, following fusion of the metal block (11) by overheating, cause the slider (6) to move axially, with relative interruption of the electrical circuit.
EP96119859A 1996-03-01 1996-12-11 Safety fuse, in particular for armoured electrical resistance elements Expired - Lifetime EP0793248B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9630413T SI0793248T1 (en) 1996-03-01 1996-12-11 Safety fuse, in particular for armoured electrical resistance elements

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1996VE000008U IT242160Y1 (en) 1996-03-01 1996-03-01 SAFETY FUSE, IN PARTICULAR FOR ELECTRIC ENCLOSED HEATERS
ITVE960008U 1996-03-01

Publications (3)

Publication Number Publication Date
EP0793248A2 EP0793248A2 (en) 1997-09-03
EP0793248A3 true EP0793248A3 (en) 1998-11-25
EP0793248B1 EP0793248B1 (en) 2001-10-24

Family

ID=11424166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119859A Expired - Lifetime EP0793248B1 (en) 1996-03-01 1996-12-11 Safety fuse, in particular for armoured electrical resistance elements

Country Status (6)

Country Link
EP (1) EP0793248B1 (en)
AT (1) ATE207654T1 (en)
DE (1) DE69616270T2 (en)
ES (1) ES2163576T3 (en)
IT (1) IT242160Y1 (en)
SI (1) SI0793248T1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10226357B4 (en) * 2002-06-13 2004-06-24 INTER CONTROL Hermann Köhler Elektrik GmbH & Co KG Thermal fuse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930215A (en) * 1974-11-29 1975-12-30 Texas Instruments Inc Nonresettable thermally actuated switch
US4032877A (en) * 1976-05-03 1977-06-28 Mcgraw-Edison Company Protector for electric circuits
FR2402943A1 (en) * 1977-09-09 1979-04-06 Nifco Inc FUSE THERMAL BREAKER
US4276531A (en) * 1979-04-20 1981-06-30 Davis Merwyn C Nonresetable thermally actuated switch
EP0613325A2 (en) * 1987-11-30 1994-08-31 Elpag Ag Chur Tubular heating element with shape-changing, pretensioned protection element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930215A (en) * 1974-11-29 1975-12-30 Texas Instruments Inc Nonresettable thermally actuated switch
US4032877A (en) * 1976-05-03 1977-06-28 Mcgraw-Edison Company Protector for electric circuits
FR2402943A1 (en) * 1977-09-09 1979-04-06 Nifco Inc FUSE THERMAL BREAKER
US4276531A (en) * 1979-04-20 1981-06-30 Davis Merwyn C Nonresetable thermally actuated switch
EP0613325A2 (en) * 1987-11-30 1994-08-31 Elpag Ag Chur Tubular heating element with shape-changing, pretensioned protection element

Also Published As

Publication number Publication date
IT242160Y1 (en) 2001-06-04
EP0793248B1 (en) 2001-10-24
SI0793248T1 (en) 2002-06-30
ES2163576T3 (en) 2002-02-01
EP0793248A2 (en) 1997-09-03
ATE207654T1 (en) 2001-11-15
DE69616270T2 (en) 2002-05-23
ITVE960008U1 (en) 1997-09-01
DE69616270D1 (en) 2001-11-29

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