Patent ID: 9640974
Date: 2017-05-02
CPC Classifications: H01H,H02H

Claim:
1. A DC circuit breaker comprising: a pair of arcing contact members for holding an arc; an interaction element configured to interact with the arc in dependence of whether the arc is in a first state or in a second state such that due to the interaction element the arc voltage drop in the first state is lower than the arc voltage drop in the second state; a resonance branch coupled in parallel to the contact members, the resonance branch and contact members forming a resonance circuit adapted to enable a resonance branch current to oscillate thereby inducing oscillations of an arc current, the resonance branch including a coupling element configured to couple the resonance branch with the arc, such that the arc is brought to the first state when the current in the resonance branch has a first direction, and that the arc is brought to the second state when the current in the resonance branch has a second direction, wherein the coupling comprises a force acting on the arc and adjusting the arc between the first state that is further away from the interaction element and the second state that is closer to the interaction element.