The utility model relates to outdoor power supply and distribution equipment, in particular to an outdoor high-voltage intelligent demarcation vacuum circuit breaker. The vacuum circuit breaker comprises a housing; an A-phase insulating box, a B-phase insulating box and a C-phase insulating box are mounted in the housing; each insulating box is provided with a vacuum arc extinguish chamber arranged therein; two ends of each vacuum arc extinguish chamber are respectively and correspondingly connected with A, B and C phase incoming bushings or the three phases of outgoing bushings, and are equipped with on-and-off pull rod mechanisms; and particularly, zero-sequence transformers are mounted at the inner ends of the A, B, and C phase incoming bushings or the outgoing bushings; and current transformers are mounted on the A and C phase incoming bushings or outgoing bushings. By adopting the utility model, the single-phase grounding faults and phase faults can be automatically avoided, and when electric shock faults or leakage faults occur to a circuit, protection actions can be taken, and the power source is switched off. The vacuum circuit breaker is mainly used for agricultural 10 kV distribution circuits.