公开(公告)号：EP1346388A1

公开(公告)日：2003-09-24

申请号：EP01271945.6

申请日：2001-12-20

Applicant: ABB Schweiz AG

Inventor： BAIATU, Tudor ,  IACOVINO, Elio ,  STANIA, Manfred ,  SCHWARZ, Willy ,  BALSIGER, Werner

IPC: H01H73/18

CPC classification number: H01H71/121 ,  H01H73/18

Abstract: The power switch has a current flow path (7) with two supply terminals (1, 2) and a double breaking contact arrangement. The contact arrangement includes two series connected contact systems (10, 15), in which the current flow path extends in two sections guided parallel to one another. Said sections are formed by an arc (21, 22) during a switching operation. The contact parts (11, 12) of both contact systems are connected to one another and to both supply terminals (1, 2) in such a way that the current in both sections has the same direction. As a result, both arcs (21, 22) attract each other and displacement of the arcs relative to one another is prevented. Both arcs run synchronously into the arc extinction chamber (28, 29) with great reliability and are extinguished therein practically at the same time. The power switch is characterized by high cutout capability.