WZ4,WZA4 under voltage release for APU30

Description

The WZ4,WZA-4 undervoltage trip device is used to remotely open the breaker when the voltage decreases to within 0.7 to 0.35 of the rated voltage, while closing the breaker is prevented at a voltage lower than 0.35 of the rated voltage, while closing the breaker is ensured at a voltage equal to or greater than 0.85 of the rated voltage.Available voltages are 220,380,500V. You can also order the trigger coil itself, specifying the voltage and type of current.