The STEP Phase Sequence Relay SW11 is an electrical protection device primarily used to prevent faults such as phase sequence errors, phase loss, and single-phase failure in three-phase motors, ensuring the motor operates correctly. It works by detecting the voltage waveform in the power grid to determine the phase sequence of the three-phase power supply, thus providing protection for the motor. When purchasing, please match the model based on the specifications. For more details, please consult customer service.
