رلۀ الکترومکانیکی ولتاژ فرکانس کنترل

Function: phase asymmetry, phase sequence, monitoring, voltage, frequency monitoring
Measured/monitored value: over-voltage, frequency, under-voltage
Other characteristics: AC/DC, DIN rail, adjustable
Other characteristics: multifunction, three-phase, digital, AC
Other characteristics: three-phase, digital