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Title:
CIRCUIT BREAKER
Document Type and Number:
Japanese Patent JP2003234056
Kind Code:
A
Abstract:

To provide a circuit breaker which has a high capacity and superior creep resistance.

The circuit breaker comprises an outer enclosure 1 which unifyingly encases unit cases 20, 22, 24 by engaging projected parts 22a1, 22a2, 22b1, 22b2 of the unit case 22 to which an open/close mechanism 40 is fixed with recessed parts 20b1, 20b2, 24a1, 24a2 of the unit cases 20 and 24, each of the unit cases 20, 22, 24 housing a traveling contact member 32 having a traveling contact 32A opposing a fixed contact, wherein on the inside surface of each of main faces of first cases 20A, 22A, 24A and second cases 20B, 22B, 24B constituting the unit cases 20, 22, 24 respectively there are formed a resin composition with a glass mat 25 therein, which resin composition has a higher thermal conductivity than the unit cases themselves.


Inventors:
Wakabayashi, Hideya
Katsube, Shunichi
Takahashi, Susumu
Fushimi, Masahiro
Application Number:
JP2002000029445
Publication Date:
August 22, 2003
Filing Date:
February 06, 2002
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H01H9/34; H01H73/06; H01H73/18; (IPC1-7): H01H73/06; H01H9/34; H01H73/18
Attorney, Agent or Firm:
宮田 金雄 (外1名)