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EP 2 335 260 A1

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(43) Date of publication: 22.06.2011 Bulletin 2011/25 (21) Application number: 09736164.6 (22) Date of filing: 28.09.2009

(51) International Patent Classification (IPC):  H01H 9/36(2006.01) H01H 9/34(2006.01) H01H 9/44(2006.01) (86) International application number: PCT/EP2009/062558 (87) International publication number: WO 2010/043487 (22.04.2010 Gazette 2010/16)

(84) Designated Contracting States: 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 SE SI SK SM TR Designated Extension States: AL BA RS (30) Priority: 15.10.2008 IT MI20081826 (71) Applicant: ABB S.p.A. 20124 Milano (IT)

(72) Inventors: PALEARI, Ivan I-20023 Cerro Maggiore (MI) (IT) VILLANI, Andrea I-20081 Abbiategrasso (MI) (IT) CHIARAVALLI, Matteo I-21020 Daverio (VA) (IT) TINELLI, Marco I-20127 Milano (IT) ABBATTISTA, Tommaso I-20162 Milano (IT) ANTONIAZZI, Alberto I-20080 Zibido San Giacomo (MI) (IT) (74) Representative: Giavarini, Francesco et al Zanoli & Giavarini S.r.l. Via Melchiorre Gioia, 64 20125 Milano 20125 Milano (IT)