The 250A Is A 3-Phase, Auto-Ranging, Dual-Range Voltage Monitor That Protects 190-480VAC, 50*/60HZ Motors Regardless Of Size From Low and High Voltage, Unbalance/Single-Phase, and Reverse-Phase. The Product Provides A User Selectable Nominal Voltage Setpoint and The Voltage Monitor Automatically Selects Between The 200V and 400V Range. The 250A Also Features Adjustable or Manual Restart Delay. This Unique Microcontroller-Based Voltage and Phase-Sensing Device Constantly Monitors The 3-Phase Voltages to Det