CURRENT LIMITER AND CIRCUIT BREAKER WITH CURRENT-LIMITING FUNCTION

Title:

CURRENT LIMITER AND CIRCUIT BREAKER WITH CURRENT-LIMITING FUNCTION

Document Type and Number:

WIPO Patent Application WO/2000/041202

Kind Code:

A1

Abstract:

A current limiter having an excellent current-limiting function and produced at low cost and a circuit breaker comprising the same and having a small impedance are provided so as to prevent the case from being damaged because of an unwanted increase of the pressure inside the case due to an arc. Contactors (1, 7) have respective contacts. When the contacts are in contact with each other, the ends on the contacts' side are in a cylindrical space in a cylindrical insulator (25); when the contacts are out of contact, one of the contacts is outside the cylindrical space. If an arc is produced, the pressure in acylindrical space (18) is abruptly increased to decrease the arc current, thus improving the current limiting performance.

Inventors:

MITSUHASHI TAKAO (JP)
TSUKIMA MITSURU (JP)
TAKAHASHI MITSUGU (JP)
FUSHIMI MASAHIRO (JP)
FUKUYA KAZUNORI (JP)
MURATA SHIRO (JP)
YAMAGATA SHINJI (JP)

Application Number:

PCT/JP1999/007303

Publication Date:

July 13, 2000

Filing Date:

December 24, 1999

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
MITSUHASHI TAKAO (JP)
TSUKIMA MITSURU (JP)
TAKAHASHI MITSUGU (JP)
FUSHIMI MASAHIRO (JP)
FUKUYA KAZUNORI (JP)
MURATA SHIRO (JP)
YAMAGATA SHINJI (JP)

International Classes:

H01H33/98; H01H77/10; H01H9/30; H01H9/34; H01H9/44; H01H9/46; H01H71/02; H01H73/18; H01H77/06; (IPC1-7): H01H73/18

Foreign References:

JPH10269923A	1998-10-09
JPH08287813A	1996-11-01
JPH0554783A	1993-03-05
JPH0992123A	1997-04-04

Other References: