Littelfuse 202-200-SP Single-Phase Voltage/Phase MonitorLittelfuse 202 200 SP Voltage Phase Monitor Product Description The Model 202 200 SP is a voltage monitor designed to protect single phase motors regardless of size. It is used on 190 240VAC, 50 60Hz motors to prevent damage caused by low voltage or high voltage. A unique microcontroller based voltage sensing circuit constantly monitors the single phase voltage to detect harmful power line conditions. When a harmful condition is detected, the 202 200