The 201A series is a three-phase, auto-ranging, dual-range voltage monitor that protects 190–480 V ac, 50/60 Hz motors regardless of their size. This monitor provides a user-selectable nominal voltage setpoint and will automatically select between the 200 V and 400 V range. It includes advanced, single LED diagnostics where color and light patterns distinguish between faults and normal conditions. This unique microcontroller-based voltage and phase-sensing unit constantly monitors the three-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels for a specified restart delay time.
• Proprietary microcontroller-based circuitry
• Auto-sensing wide voltage range
• Advanced LED diagnostics
• Compact design for 8-pin; DIN-rail or surface mount
SPECIFICATIONS
• Constant monitoring of single-phase, low-voltage, voltage unbalance, phase reversal, power line conditions – high-voltage monitoring is optional
• Automatically senses system voltage between 190–480 V ac. Saves setup time
