Contact system of automatic transfer switching equipment

The contact system of the automatic transfer switching equipment comprises a plurality of contact units, each contact unit comprises a contact cavity, each contact cavity is internally provided with a static contact and a moving contact, the static contact comprises a common side static contact and a standby side static contact, the contact cavity is also internally provided with an arc isolation assembly, and the static contact comprises a common side static contact and a standby side static contact. A first arc-isolating sheet and a second arc-isolating sheet of the arc-isolating assembly rotate along with a moving contact, the moving contact is in contact with a common side static contact, the second arc-isolating sheet is transversely blocked between the moving contact and a standby side static contact, the moving contact is in contact with the standby side static contact, and the first arc-isolating sheet is transversely blocked between the moving contact and the common side static contact. When the norm