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Zw-40.5 Outdoor Vacuum Circuit Breaker Automatic Recloser Pole Mounted Vcb Distribution Automation Breaker. 40.5kV Outdoor Intelligent Vacuum Circuit Breaker, 630A/1250A/1600A, Pole Mounted Design. Intelligent Recloser Controller, 1-3 Times Auto Reclosing, Eliminate Instantaneous Faults. Three-stage Composite Protection: Inrush Control, Overcurrent, Short Circuit Quick Break. PT/CT Powered with Battery Backup, No External Power Supply Needed, Auto Operation. Wired & Wireless Remote Control, Distribution Automation Ready, Smart Grid Compatible. Vacuum Arc Extinguishing, 20,000 Times Mechanical Life, Maintenance Free Operation.