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Title:
EARTH LEAKAGE BREAKER
Document Type and Number:
Japanese Patent JP2010009919
Kind Code:
A
Abstract:

To easily carry out the electric connection of an earth leakage detecting circuit and a primary conductor penetrating a zero-phase current transformer, to reduce the number of parts for connection and assembling man-hours for electric connection, and to easily carry out assembling.

In an earth leakage breaker having as an essential constituent a cabinet 10 composed of an insulating base 11 and an insulating cover 12 formed of a synthetic resin material, the primary conductors 21R, 21S, 21T which are built in the cabinet, and opened and closed by a contact and in which the main circuit current flows, the zero-phase current transformer 22 which the primary conductors penetrate and detects a leakage current of the load side main circuit cable path to form an output signal, the earth leakage detecting circuit to input the output signal from the zero-phase current transformer and detect the earth leakage of the load side main circuit cable path, and an open/close mechanism 300 to open and close the main circuit contact responding to an output of the earth leakage detecting circuit, and power supply terminals 24R, 24S, 24T to contact with the primary conductors and to take in the operation power supply of the earth leakage detecting circuit are mounted on an insulating member of the essential constituents.


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Inventors:
MATSUMOTO YUKINA
KAMIYA SHINTARO
Application Number:
JP2008167353A
Publication Date:
January 14, 2010
Filing Date:
June 26, 2008
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H01H83/02; H01H73/20
Domestic Patent References:
JP2005050605A2005-02-24
JP2001035343A2001-02-09
JPH01189834A1989-07-31
Attorney, Agent or Firm:
Masuo Oiwa
Toshihide Kodama
Takenaka Ikuo
Keigo Murakami