Patent ID: 7038157

Claim:
A vacuum circuit breaker, comprising: a casing ( 2 ), in which a fixed and a movable contact member ( 5 , 7 ) are each attached to a supporting contact rod and supported therein in a mutually electrically isolated manner, and a coil ( 10 ) coaxial to the casing and surrounding the contact members and having first and second end connections ( 11 , 13 ), wherein the first end connection ( 11 ) is electrically connected to one of the contact members, the contact member to which the first end connection ( 11 ) of the coil ( 10 ) is connected is electrically coupled via a first electrical coupling element to a connection ( 12 ) of the vacuum circuit breaker, and the second end connection ( 13 ) of the coil ( 10 ) is electrically coupled via a second electrical coupling element to the connection ( 12 ), the resistances of the first and second coupling element are set in order to achieve a predetermined current value through the coil, the first and second coupling elements providing two separate electrical paths to the connection, a first electric path via the first end connection and the first coupling element, and a separate, second electrical path via the second end connection and the second coupling element, the connection ( 12 ) being for one of a feeder connection and an outgoer connection.