A contact system for automatic transfer switch, the contact system comprising a first stationary contact, a second stationary contact and a movable contact, wherein the first stationary contact and the second stationary contact each comprise a stationary contact engagement part and a conductive connection part suitable to be electrically connected to a wire connection terminal of the automatic transfer switch, wherein the movable contact is movable between a first contact position and a second contact position, the movable contact being in contact with the stationary contact engagement part of the first stationary contact in the first contact position of the movable contact, and the movable contact being in contact with the stationary contact engagement part of the second stationary contact in the second contact position of the movable contact, wherein at least one stationary contact of the first stationary contact and the second stationary contact comprises: a first part extending in a vertical direction and comprising a first vertical end and a second vertical end; and a second part extending in a horizontal direction and comprising a first horizontal end and a second horizontal end, wherein the first vertical end of the first part meets the first horizontal end of the second part, the stationary contact engagement part of the at least one stationary contact is at or close to the second vertical end of the first part, the conductive connection part of the at least one stationary contact is at or close to the second horizontal end of the second part, and a chamfered corner is formed at a joint position of the first part and the second part of the at least one stationary contact, characterized in that the at least one stationary contact further comprises a magnetically conductive block connected to the chamfered corner, and the magnetically conductive block is formed of a magnetically conductive material. the first stationary contact and the second stationary contact each comprise a stationary contact engagement part and a conductive connection part suitable to be electrically connected to a wire connection terminal of the automatic transfer switch, wherein the movable contact is movable between a first contact position and a second contact position, the movable contact being in contact with the stationary contact engagement part of the first stationary contact in the first contact position of the movable contact, and the movable contact being in contact with the stationary contact engagement part of the second stationary contact in the second contact position of the movable contact, wherein at least one stationary contact of the first stationary contact and the second stationary contact comprises: a first part extending in a vertical direction and comprising a first vertical end and a second vertical end; and a second part extending in a horizontal direction and comprising a first horizontal end and a second horizontal end, wherein the first vertical end of the first part meets the first horizontal end of the second part, the stationary contact engagement part of the at least one stationary contact is at or close to the second vertical end of the first part, the conductive connection part of the at least one stationary contact is at or close to the second horizontal end of the second part, and a chamfered corner is formed at a joint position of the first part and the second part of the at least one stationary contact, characterized in that the at least one stationary contact further comprises a magnetically conductive block connected to the chamfered corner, and the magnetically conductive block is formed of a magnetically conductive material. a first part extending in a vertical direction and comprising a first vertical end and a second vertical end; and a second part extending in a horizontal direction and comprising a first horizontal end and a second horizontal end, wherein the first vertical end of the first part meets the first horizontal end of the second part, the stationary contact engagement part of the at least one stationary contact is at or close to the second vertical end of the first part, the conductive connection part of the at least one stationary contact is at or close to the second horizontal end of the second part, and a chamfered corner is formed at a joint position of the first part and the second part of the at least one stationary contact, characterized in that the at least one stationary contact further comprises a magnetically conductive block connected to the chamfered corner, and the magnetically conductive block is formed of a magnetically conductive material.