Which of the following illustrated circuit schematics provides phase failure protection for a three phase motor using load side current sensing technology? EL-0222

Correct Answer: Option D — D

Load side current sensing technology monitors the actual current flowing to the motor windings. If one phase is lost, the imbalance is detected by the sensing circuitry, triggering the protection device to open the control circuit. This prevents single-phasing, which can cause rapid overheating and catastrophic motor failure.