JPS6457546A - Reusable fuse - Google Patents

Reusable fuse

Info

Publication number
JPS6457546A
JPS6457546A JP21252587A JP21252587A JPS6457546A JP S6457546 A JPS6457546 A JP S6457546A JP 21252587 A JP21252587 A JP 21252587A JP 21252587 A JP21252587 A JP 21252587A JP S6457546 A JPS6457546 A JP S6457546A
Authority
JP
Japan
Prior art keywords
contact point
shape memory
memory alloy
fuse
fixed contact
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.)
Pending
Application number
JP21252587A
Other languages
Japanese (ja)
Inventor
Yasuhiro Ueki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP21252587A priority Critical patent/JPS6457546A/en
Publication of JPS6457546A publication Critical patent/JPS6457546A/en
Pending 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
    • H01H71/14—Electrothermal mechanisms
    • H01H71/145—Electrothermal mechanisms using shape memory materials

Landscapes

  • Thermally Actuated Switches (AREA)

Abstract

PURPOSE:To make the reuse easy, secure and repeatable by providing both movable and fixed contact points with a magnet and by constituting the movable contact point to be actuated by the action of a shape memory alloy which deforms at a specified temperature. CONSTITUTION:In the case a current flows in an electric appliance provided with a fuse in a steady state, the current flows through both contact points 8, 9 as the fixed contact point 8 and the movable contact point 9 are securely mated with the attractive force of magnets 6, 7. when a current larger than a specified value flows through the fuse, the temperature of a coil-shaped shape memory alloy 5 reaches a deformation temperature, said alloy 5 contracts and, overcoming the attractive forces of the magnets 6, 7, removes the movable contact point 9 from the fixed contact point 8 to break a circuit. The fuse wherein the contact points 8, 9 are apart from each other can be restored to the original condition to be reused by removing the electrode 7 on the side where the coil-shaped shape memory alloy 5 is connected, extending the shape memory alloy, and reattaching an electrode 2 to a tube to bring the movable contact point 9 into contact with the fixed contact point 8.
JP21252587A 1987-08-26 1987-08-26 Reusable fuse Pending JPS6457546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21252587A JPS6457546A (en) 1987-08-26 1987-08-26 Reusable fuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21252587A JPS6457546A (en) 1987-08-26 1987-08-26 Reusable fuse

Publications (1)

Publication Number Publication Date
JPS6457546A true JPS6457546A (en) 1989-03-03

Family

ID=16624114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21252587A Pending JPS6457546A (en) 1987-08-26 1987-08-26 Reusable fuse

Country Status (1)

Country Link
JP (1) JPS6457546A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6734782B2 (en) * 2000-06-21 2004-05-11 Siemens Aktiengesellschaft Switching device with an actuator element consisting of a shape memory alloy
GB2420236A (en) * 2004-11-12 2006-05-17 Mark Paul Norman Protection mechanism for an electrically driven SMA wire
US7345570B2 (en) * 2005-08-02 2008-03-18 Uchihashi Estec Co., Ltd. Thermoprotector
US7385474B2 (en) * 2004-08-04 2008-06-10 Uchihashi Estec Co., Ltd. Thermosensor, thermoprotector, and method of producing a thermosensor
US20110156855A1 (en) * 2009-12-31 2011-06-30 Zhiwei Tong Fusing device and battery assembly comprising the same
DE102010014280A1 (en) * 2010-04-08 2011-10-13 Eto Magnetic Gmbh Overcurrent switching device
US20120169451A1 (en) * 2010-12-30 2012-07-05 Brian Frederick Mooney Shape memory alloy actuated circuit breaker
CN107706060A (en) * 2017-11-21 2018-02-16 无锡市洗选设备厂 A kind of electric machinery fuse

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6734782B2 (en) * 2000-06-21 2004-05-11 Siemens Aktiengesellschaft Switching device with an actuator element consisting of a shape memory alloy
US7385474B2 (en) * 2004-08-04 2008-06-10 Uchihashi Estec Co., Ltd. Thermosensor, thermoprotector, and method of producing a thermosensor
GB2420236A (en) * 2004-11-12 2006-05-17 Mark Paul Norman Protection mechanism for an electrically driven SMA wire
US7345570B2 (en) * 2005-08-02 2008-03-18 Uchihashi Estec Co., Ltd. Thermoprotector
US20110156855A1 (en) * 2009-12-31 2011-06-30 Zhiwei Tong Fusing device and battery assembly comprising the same
DE102010014280A1 (en) * 2010-04-08 2011-10-13 Eto Magnetic Gmbh Overcurrent switching device
DE102010014280B4 (en) 2010-04-08 2021-11-25 Eto Magnetic Gmbh Overcurrent switching device
US20120169451A1 (en) * 2010-12-30 2012-07-05 Brian Frederick Mooney Shape memory alloy actuated circuit breaker
US8830026B2 (en) * 2010-12-30 2014-09-09 General Electric Company Shape memory alloy actuated circuit breaker
CN107706060A (en) * 2017-11-21 2018-02-16 无锡市洗选设备厂 A kind of electric machinery fuse

Similar Documents

Publication Publication Date Title
JPS6410588A (en) Power connector
EP0451678A3 (en) Overload protective device
JPS6457546A (en) Reusable fuse
CA2218560A1 (en) Electric connector
ES2037595A1 (en) High breaking capacity micro-fuse
EP1146579A3 (en) Non-aqueous electrolyte rechargeable battery
JPS52127168A (en) Etching unit
BR9811982A (en) Electrochemical cell, and, current switch installation for an electrochemical cell
US3634812A (en) Fuse clamp
SE8704180L (en) circuit breaker
JPS55137503A (en) Photo switch
CN209895977U (en) Waterproof electromagnetic switch with four pairs of contacts and with connection sequence
JPS6412438A (en) Current limiting circuit-breaker
JPS55127531A (en) External contact mechanism of camera
JPS6466480A (en) Protective device for compressor
JPH0311331U (en)
JPS647447A (en) Current limiting device
JPS5697879A (en) Surge counter
SU964763A2 (en) Liquid metal switch
JPH03190062A (en) Storage battery charging device
JPS6438940A (en) Current-limiting fuse
LIAN An HVDC breaker with sequential switching[Ph. D. Thesis]
SU601564A1 (en) Sensor of object inclination angle
JPS5484225A (en) Switching power source circuit
MCCANN An assessment of the applicability of high voltage AC circuit breakers to inductive energy storage[Ph. D. Thesis]