1)Over-voltage and under-voltage protection: When the power supply voltage is too high and too low, it will be cut off and over-voltage and under-voltage value can be set up.
2)Phase loss protection
3)Phase sequence protection: when there is an error with the three-phase power, power supply will be cut off
4)can be installed on a standard guide or screw, suitable voltage range 140 to 580V AC/200 to 500V AC