(19)
(11) EP 1 939 904 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.05.2009 Bulletin 2009/21

(43) Date of publication A2:
02.07.2008 Bulletin 2008/27

(21) Application number: 07024416.5

(22) Date of filing: 17.12.2007
(51) International Patent Classification (IPC): 
H01H 9/34(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 29.12.2006 KR 20060139140

(71) Applicant: LS Industrial Systems Co., Ltd
Jung-Gu Seoul (KR)

(72) Inventor:
  • Yeon, Young-Myoung
    Cheoungju Chungcheongbuk-do (KR)

(74) Representative: Altenburg, Udo et al
Patent- und Rechtsanwälte Bardehle . Pagenberg . Dost . Altenburg . Geissler Galileiplatz 1
81679 München
81679 München (DE)

   


(54) Air circuit breaker with ARC extinguishing apparatus


(57) An air circuit breaker with an arc extinguishing apparatus comprising: a frame having a receiving space (112) therein; a fixed contact (120) disposed inside the frame; a movable contact (130) disposed to be in contact with or separated from the fixed contact; and an extinguishing apparatus (150) which includes a chamber member disposed in the frame and having an outlet (153) formed at one side thereof, a plurality of grids (171) disposed in the chamber member to be spaced apart from one another, and a cloth filter member (180) formed of fabric and disposed between the outlet and the grids to prevent fragments which are generated by arcs from being scattered, whereby the air circuit breaker can be fabricated with low cost, and also fragments generated due to arcs can be prevented from being excessively scattered to the exterior.







Search report