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Patent Searching and Data


Title:
EARTH-LEAKAGE CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2013/073103
Kind Code:
A1
Abstract:
This earth-leakage circuit breaker is constructed by installing, inside a case (12), main circuit contacts, a contact opening/closing mechanism, a zero-phase current transformer (19) which is provided on the main circuit in an intervening manner, an earth-leakage tripping unit (21), an arc-extinguishing unit (18), a printed board (22) on which circuit components for an earth-leakage detection circuit and an earth-leakage test circuit are mounted, and a pushbutton-type test switch (25) which is connected to the earth-leakage test circuit. Additionally, an internal unit (29) that internally contains the printed board (22) is housed inside the case (12), and an arc gas generated by the arc-extinguishing unit (18) is prevented by the internal unit (29) from coming into contact with the printed board (22).

Inventors:
KAWASHIMA YOSHIAKI (JP)
HOSOOKA YOHEI (JP)
Application Number:
JP2012/006583
Publication Date:
May 23, 2013
Filing Date:
October 15, 2012
Export Citation:
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Assignee:
FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO.,LTD. (5-7 Nihonbashi Odemma-cho, Chuo-ku Tokyo, 11, 〒1030011, JP)
International Classes:
H01H83/04; H01H83/02
Foreign References:
JP2000003660A
JP2000149757A
JP2002231119A
JPS63259937A
JP2003132779A
JPH08138521A
JPH07240142A
Attorney, Agent or Firm:
HIROSE, Hajime et al. (Tokkyo Gyomu Hojin Nichiei Kokusai Tokkyo Jimusho, Shiroyama Trust Tower 32th Floor 3-1, Toranomon 4-chome, Minato-k, Tokyo 32, 〒1056032, JP)
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Claims: