(19)

(11)

EP 2 553 701 A1

(12)

(43) Date of publication: 06.02.2013 Bulletin 2013/06 (21) Application number: 11712211.9 (22) Date of filing: 23.03.2011

(51) International Patent Classification (IPC):  H01H 15/10(2006.01) H01H 21/22(2006.01) (86) International application number: PCT/EP2011/054405 (87) International publication number: WO 2011/120849 (06.10.2011 Gazette 2011/40)

(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 (30) Priority: 31.03.2010 CN 201010142076 (71) Applicant: Siemens Aktiengesellschaft 80333 München (DE)	(72) Inventors: BU, Yong Beijing 100095 (CN) SUN, Chang Lin Beijing 102200 (CN) SHI, Zhi Jie Beijing 100101 (CN)