(19)

(11)

EP 4 540 849 A1

(12)

(43) Date of publication: 23.04.2025 Bulletin 2025/17 (21) Application number: 22737598.7 (22) Date of filing: 20.06.2022

(51) International Patent Classification (IPC):  H01H 33/88(2006.01) H01H 9/52(2006.01) H01H 33/74(2006.01) (52) Cooperative Patent Classification (CPC): H01H 2033/888; H01H 2009/526; H01H 33/74 (86) International application number: PCT/EP2022/066741 (87) International publication number: WO 2023/247009 (28.12.2023 Gazette 2023/52)

(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 Designated Validation States: KH MA MD TN (71) Applicant: Hitachi Energy Ltd 8050 Zürich (CH)	(72) Inventors: SEEGER, Martin 5745, Safenwil (CH) PANOUSIS, Emmanouil 5400, Baden (CH) (74) Representative: Michalski Hüttermann & Partner Patentanwälte mbB  Kaistraße 16A 40221 Düsseldorf 40221 Düsseldorf (DE)