Arc chamber for a DC circuit breaker

An arc chamber for a DC circuit breaker, comprising:

• an entry side adapted to receive an electric arc which was generated outside of the arc chamber and which propagates in a forward direction;
• a plurality of stacked splitter plates with spaces therebetween;
• at least one inhibitor barrier arranged on the entry side and blocking a portion of at least one of the spaces to inhibit a reverse propagation of the electric arc out of the arc chamber in a reverse direction;
• wherein
• the at least one inhibitor barrier does not block another portion of the at least one of the spaces on the entry side to allow the electric arc to enter the at least one of the spaces;
• the at least one inhibitor barrier extends in a stacking direction of the splitter plates;
• and
• the at least one inhibitor barrier is formed of a pile of inhibitor plates, which are arranged in an aligned manner in the stacking direction, wherein each inhibitor plate is provided between adjacent splitter plates of the plurality of splitter plates, and
• wherein the pile of inhibitor plates extends continuously in the stacking direction of the splitter plates from one outermost splitter plate to the other outermost splitter plate of the plurality of stacked splitter plates.