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(11)

EP 2 837 011 A1

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(43) Date of publication: 18.02.2015 Bulletin 2015/08 (21) Application number: 13714951.4 (22) Date of filing: 10.04.2013

(51) International Patent Classification (IPC):  H01H 33/70(2006.01) H01H 33/82(2006.01) H01H 33/22(2006.01) H01H 33/76(2006.01) H01H 33/91(2006.01) (86) International application number: PCT/EP2013/057485 (87) International publication number: WO 2013/153112 (17.10.2013 Gazette 2013/42)

(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 Designated Extension States: BA ME (30) Priority: 11.04.2012 WO PCT/EP2012/056528 (71) Applicant: ABB Technology AG 8050 Zürich (CH)	(72) Inventors: STOLLER, Patrick CH-8050 Zürich (CH) SEEGER, Martin CH-5036 Oberentfelden (CH) IORDANIDIS, Arthouros CH-5400 Baden (CH) WÜTHRICH, Benjamin CH-8003 Zürich (CH) (74) Representative: ABB Patent Attorneys  C/o ABB Schweiz AG Intellectual Property (CH-LC/IP) Brown Boveri Strasse 6 5400 Baden 5400 Baden (CH)