Microcontroller based.
Supply voltage measurement (True RMS)
Overvoltage, undervoltage, phase failure, asymmetry and phase sequence protection
Protection parameters setting by knobs
Supply voltage:RD-MV35,36,37: 208V,220V,240V,380V,400V,415V,460V,480V
RD-MV35N,36N,37N: 220V,230V,240V。
N phase failure protection for RD-MV35N/36N/37N
2 module DIN rail housing