JPS643925A - Sealed contact device - Google Patents

Sealed contact device

Info

Publication number
JPS643925A
JPS643925A JP15906887A JP15906887A JPS643925A JP S643925 A JPS643925 A JP S643925A JP 15906887 A JP15906887 A JP 15906887A JP 15906887 A JP15906887 A JP 15906887A JP S643925 A JPS643925 A JP S643925A
Authority
JP
Japan
Prior art keywords
electrodes
arc
anode
cathode
melting point
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
JP15906887A
Other languages
Japanese (ja)
Inventor
Kiwamu Shibata
Takehiko Toguchi
Hiromichi Inoue
Mamoru Tateno
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP15906887A priority Critical patent/JPS643925A/en
Publication of JPS643925A publication Critical patent/JPS643925A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To suppress the generation of metal vapor from both electrodes by providing a film made of a high-melting point insulating material at positions to become the cathode and anode of an arc across both fixed and movable electrodes. CONSTITUTION:A film D made of a high-melting point insulating material such as ceramic is provided at positions to become the cathode and anode of an arc across both fixed and movable electrodes 1, 3. The arc occurring at the time of current cutoff is extended in the direction determined by the current and magnetic field direction, and the arc is cut off in an extremely short time by the cooling action of hydrogen gas. In this case, the cathode and anode of the arc are moved toward both electrodes 1, 3 but stopped at both contacts 2, 4 because the high-melting point insulating film D is provided on both electrodes 1, 3. The generation of metal vapor from both electrodes can be thereby suppressed.
JP15906887A 1987-06-25 1987-06-25 Sealed contact device Pending JPS643925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15906887A JPS643925A (en) 1987-06-25 1987-06-25 Sealed contact device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15906887A JPS643925A (en) 1987-06-25 1987-06-25 Sealed contact device

Publications (1)

Publication Number Publication Date
JPS643925A true JPS643925A (en) 1989-01-09

Family

ID=15685514

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15906887A Pending JPS643925A (en) 1987-06-25 1987-06-25 Sealed contact device

Country Status (1)

Country Link
JP (1) JPS643925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4948933A (en) * 1989-02-27 1990-08-14 Scan Systems, Inc. Apparatus for cutting precision notches in work surfaces
JPH03138829A (en) * 1989-10-23 1991-06-13 Matsushita Electric Works Ltd Sealed contact device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4948933A (en) * 1989-02-27 1990-08-14 Scan Systems, Inc. Apparatus for cutting precision notches in work surfaces
JPH03138829A (en) * 1989-10-23 1991-06-13 Matsushita Electric Works Ltd Sealed contact device

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