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 (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Tsukima, Mitsuru (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Takahashi, Mitsugu (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Fushimi, Masahiro (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Fukuya, Kazunori (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Murata, Shiro (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Yamagata, Shinji (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Tsukima, Mitsuru (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Takahashi, Mitsugu (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Fushimi, Masahiro (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Fukuya, Kazunori (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Murata, Shiro (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Yamagata, Shinji (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Application Number:
PCT/JP1999/007303
Publication Date:
July 13, 2000
Filing Date:
December 24, 1999
Export Citation:
Assignee:
MITSUBISHI DENKI KABUSHIKI KAISHA (2-3 Marunouchi 2-chome Chiyoka-ku Tokyo, 100-8310, JP)
Mitsuhashi, Takao (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Tsukima, Mitsuru (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Takahashi, Mitsugu (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Fushimi, Masahiro (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Fukuya, Kazunori (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Murata, Shiro (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Yamagata, Shinji (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Mitsuhashi, Takao (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Tsukima, Mitsuru (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Takahashi, Mitsugu (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Fushimi, Masahiro (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Fukuya, Kazunori (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Murata, Shiro (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Yamagata, Shinji (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, 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
Attorney, Agent or Firm:
Soga, Michiteru (S. Soga & Co. 8th floor, Kokusai Building 1-1, Marunouchi 3-chome Chiyoda-ku Tokyo, 100-0005, JP)