(19)
(11) EP 1 244 128 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.04.2004 Bulletin 2004/16

(43) Date of publication A2:
25.09.2002 Bulletin 2002/39

(21) Application number: 01120748.7

(22) Date of filing: 06.09.2001
(51) International Patent Classification (IPC)7: H01H 71/02, H01H 9/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 23.03.2001 JP 2001085013

(71) Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
Tokyo 100-8310 (JP)

(72) Inventors:
  • Katsube, Shunichi
    Chiyoda-ku, Tokyo 100-8310 (JP)
  • Fukuya, Kazunori
    Chiyoda-ku, Tokyo 100-8310 (JP)
  • Hayashi, Michihiro
    Chiyoda-ku, Tokyo 100-8310 (JP)

(74) Representative: HOFFMANN - EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) Circuit breaker


(57) A housing of a circuit breaker, which is satisfactory in impact resistance and can be applied to high breaking capacity use, and is satisfactory in flame retardancy and strength properties and exhibits less mottled blooming.
The base of a circuit breaker includes 20 wt% of nylon 66, 9 wt% of nylon 6, 4 wt% of nylon 6T, 42 wt% of a glass fiber, 13 wt% of polybromostyrene, 4 wt% of antimony trioxide, 8 wt% of an ethylene/α-olefin copolymer, and 0.3 wt% of carbon black.






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