Circuit breaker with double break contacts and non-polarity sensitive design

A DC circuit breaker adapted to selectively interrupt a DC voltage passing therethrough, said DC circuit breaker comprising:

• a moveable contact arm having a first end and a second end;
• a first set of contacts including a first contact and a second contact, movable into and out of contact with each other, the first contact being positioned on said moveable contact arm toward the first end thereof;
• a second set of contacts including a third contact and a fourth contact, movable into and out of contact with each other, the third contact being positioned on said moveable contact arm toward the second end thereof;
• said first set of contacts connected in series with said second set of contacts;
• wherein said first set of contacts is configured to open and close simultaneously with opening and closing of said second set of contacts by virtue of movement of said moveable contact arm;
• a first arc extinguisher associated with said first set of contacts, said first arc extinguisher comprising a first set of arc splitting plates and a second set of arc splitting plates;
• a second arc extinguisher associated with said second set of contacts, said second arc extinguisher comprising a third set of arc splitting plates and a fourth set of arc splitting plates;
• and
• at least three permanent magnets comprising:
• a moveable permanent magnet positioned on said moveable contact arm between said first contact and said third contact, said moveable magnet generating a moveable magnetic field;
• a first stationary permanent magnet associated with said first arc extinguisher, said first stationary magnet generating a first stationary magnetic field, wherein the first stationary magnetic field and the moveable magnetic field are additive with respect to each other, and wherein when an arc occurs between said first set of contacts, the first stationary magnetic field and the moveable magnetic field urge the arc off of the first set of contacts and toward either the first set of arc splitting plates or the second set of arc splitting plates depending on a polarity of the DC voltage;
• and
• a second stationary permanent magnet associated with said second arc extinguisher, said second stationary magnet generating a second stationary magnetic field, wherein the second stationary magnetic field and the moveable magnetic field are additive with respect to each other, and wherein when an arc occurs between said second set of contacts, the second stationary magnetic field and the moveable magnetic field urge the arc off of the second set of contacts and toward either the third set of arc splitting plates or the fourth set of arc splitting plates depending on the polarity of the DC voltage.