(19)

(11)

EP 2 707 891 A1

(12)

(43) Date of publication: 19.03.2014 Bulletin 2014/12 (21) Application number: 11721282.9 (22) Date of filing: 13.05.2011

(51) International Patent Classification (IPC):  H01H 33/12(2006.01) H01H 33/70(2006.01) (86) International application number: PCT/EP2011/057792 (87) International publication number: WO 2012/155952 (22.11.2012 Gazette 2012/47)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (71) Applicant: ABB Technology AG 8050 Zürich (CH)	(72) Inventors: OHLSSON, Daniel CH-5430 Wettingen (CH) KORBEL, Jakub CH-5400 Baden (CH) MAHDIZADEH, Navid CH-5400 Baden (CH) KOTILAINEN, Sami CH-5443 Niederrohrdorf (CH) (74) Representative: ABB Patent Attorneys  c/o ABB Schweiz AG Intellectual Property CH-IP Brown Boveri Strasse 6 5400 Baden 5400 Baden (CH)