63A 110/120V Triple Power Automatic Transfer Switch,Automatic Switching Between Utility Power、Generator and Inverter,Overcurrent Protection,Overvoltage and undervoltage Protection

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【Triple-Source Automatic Switching】:Seamlessly transfers loads between Primary, Backup 1, and Backup 2 power sources during outages, voltage sags/surges, or irregularities. Automatically reverts to the preferred source once stable. 【Built-in Electrical Protection】:Safeguards connected equipment with advanced Overvoltage (140V max), Undervoltage (90V min), and Overcurrent (63A max) protection, preventing damage from unstable power. 【Flexible Priority Phase Setting】:Designate ANY input (L1/L2/L3) as Primary—optimize for cost, reliability, or grid conditions without fixed "Main" limitations. 【Real-Time LED Voltage Monitoring】:Intuitive display shows live voltage levels (e.g., 120V, 108V) for all 3 sources, with instant status indicators for active source, transfer, and faults. 【Quick DIN Rail Installation & Compact Design】:Space-saving unit installs in minutes via standard DIN rail mounting, rated for 125A (150A max) at AC 110V with a 10⁶ mechanical lifespan.