A vacuum circuit breaker comprising: - a movable side contact and a fixed side contact which are arranged in the inside of a vacuum valve; - a fixed side energization shaft to which the fixed side contact is fixed; - a movable side energization shaft to which the movable side contact is fixed; - an energization connection portion provided at a position where the movable side energization shaft protrudes from the vacuum valve; and - a coupling body (19, 20) provided at the outside tip portion of the movable side energization shaft, - wherein the coupling body (19,20) at the outside tip portion of the movable side energization shaft is coupled to an insulation operating rod, - wherein the energization connection portion includes: an energization contact surface formed along the shaft center direction of the movable side energization shaft at the position where the movable side energization shaft protrudes from the vacuum valve; and a split terminal which crosses at right angle to the shaft center of the movable side energization shaft and is fastened by coming in contact with the energization contact surface, characterized in that the split terminal is connected by coming in contact with the energization contact surface and is formed so as to cover the outer peripheral portion of the coupling body (19,20). - a movable side contact and a fixed side contact which are arranged in the inside of a vacuum valve; - a fixed side energization shaft to which the fixed side contact is fixed; - a movable side energization shaft to which the movable side contact is fixed; - an energization connection portion provided at a position where the movable side energization shaft protrudes from the vacuum valve; and - a coupling body (19, 20) provided at the outside tip portion of the movable side energization shaft, - wherein the coupling body (19,20) at the outside tip portion of the movable side energization shaft is coupled to an insulation operating rod, - wherein the energization connection portion includes: an energization contact surface formed along the shaft center direction of the movable side energization shaft at the position where the movable side energization shaft protrudes from the vacuum valve; and a split terminal which crosses at right angle to the shaft center of the movable side energization shaft and is fastened by coming in contact with the energization contact surface, characterized in that the split terminal is connected by coming in contact with the energization contact surface and is formed so as to cover the outer peripheral portion of the coupling body (19,20). an energization contact surface formed along the shaft center direction of the movable side energization shaft at the position where the movable side energization shaft protrudes from the vacuum valve; and a split terminal which crosses at right angle to the shaft center of the movable side energization shaft and is fastened by coming in contact with the energization contact surface, characterized in that the split terminal is connected by coming in contact with the energization contact surface and is formed so as to cover the outer peripheral portion of the coupling body (19,20).