Electrical contact system

An electrical contact system comprising:

• a first static contact and a second static contact;
• a movable contact movable between a switch-on position where the movable contact is in electrical contact with the first static contact and the second static contact simultaneously and a switch-off position where the movable contact is separated from the first and second static contacts;
• and
• an arc extinguishing device comprising:
• a first arc extinguishing member and a second arc extinguishing member;
• and a driving mechanism configured to simultaneously drive the first and second arc extinguishing members to move, the driving mechanism comprising:
• a pair of supporting plates each of which is formed with a first sliding slot and a second sliding slot;
• a pair of first pushing rods each of which is rotatably mounted at one end thereof to a corresponding supporting plate and is formed with a third sliding slot at the other end thereof;
• a pair of second pushing rods each of which is rotatably mounted at one end thereof to a corresponding supporting plate, and is formed with a fourth sliding slot at the other end thereof;
• a pair of first linkage shafts which are respectively inserted into two through holes in the first arc extinguishing member;
• and
• a pair of second linkage shafts which are respectively inserted into two through holes in the second arc extinguishing member:
• wherein two ends of each of the pair of first linkage shafts are respectively received in the first sliding slots of the pair of supporting plates, and two ends of one of the pair of first linkage shafts located on outer side are respectively received in the third sliding slots of the pair of first pushing rods;
• and
• wherein two ends of each of the pair of second linkage shafts are respectively received in the second sliding slots of the pair of supporting plates, and two ends of one of the pair of second linkage shafts located on outer side are respectively received in the fourth sliding slots of the pair of second pushing rods,
• wherein when the movable contact is moved to the switch-on position, the first and second arc extinguishing members are moved beyond a contact area between the movable contact and the first and second static contacts, such that the movable contact is allowed to be in electrical contact with the first and second static contacts;
• and
• wherein when the movable contact is moved to the switch-off position, the first and second arc extinguishing members are moved to cut off electric arcs between the movable contact and the first and second static contacts.