DESCRIPTION

The DPD02DM44B is a multifunction 3-phase mains monitoring relay designed to protect electrical systems by monitoring voltage, frequency, and phase integrity. It operates on both 3-phase (3P) and 3-phase plus neutral (3P+N) systems, detecting phase loss, phase sequence errors, overvoltage, undervoltage, over/under frequency conditions, and voltage asymmetry. The device features NFC communication capability, allowing configuration and real-time monitoring via smartphone, tablet, or PC through the DPD APP, with adjustable power-on delay from 0 to 6 seconds and ultra-high harmonic immunity for noisy environments. It provides two SPDT relay outputs with changeover contacts rated at 8 A @ 250 VAC (Ith) and 2.5 A @ 250 VAC (AC15), along with status LED indication for quick troubleshooting. The DPD02DM44B is particularly suited for generators, renewable energy systems, combined heat and power installations, and loads sensitive to voltage and frequency fluctuations, offering reliable mains quality monitoring in industrial, power plant, and substation environments.