Littelfuse 202 MotorSavers

Littelfuse SymCom 202 MotorSaver Protection Relay is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190–480 V ac, 50*/60 Hz motors and protects them from single-phasing, high and low voltage, voltage unbalance and phase reversal. Critical applications include fan motors, scroll compressors, grinders, conveyor systems, elevators and escalators. Both products provide a user selectable nominal voltage setpoint and automatically select between the 200V and 400V range. The 202 has a variable restart delay (2-300 seconds),

The Model 202-RP and 202-575-RP trips on reverse phase only.