3-Phase Monitor 190-600V3 Phase Voltage Phase Monitor 190 to 480VAC Torque: 12in lbs; Wire: Stranded or solid R rated fuses provide required short circuit protection for medium voltage motors, motor controllers and associated circuitry. These components have limited ability to absorb the energy of large short circuit currents. Medium voltage motor controllers contain overload relays which provide both overload protection and locked rotor protection to the motor. The