DPD Series three-phase monitoring relay with NFC Configuration provides the utmost flexibility in very compact dimensions and offers a wide range of features in a mere 22.5-mm product width.

It protects against phase reversal, phase loss, and if the phase asymmetry, voltage, or frequency measurements are not within the user-configured settings and/or thresholds.

Settings can easily be modified through an Android App via a smartphone/tablet or via a USB NFC Reader/Writer (part number ACR1252U) connected to a computer. Under- and over-threshold settings can be set, as well as hysteresis and time delays.

Main technical features include:

• 3-phase voltage and frequency monitoring relay
• Nominal measurement range from 177 to 552V AC L-L and 102 to 318V AC L-N
• Star or Delta mains
• NFC configuration
• Adjustable set-points, hysteresis, delays, AND/OR logic
• Three diagnostic LEDs
• Operating frequency from 45 to 440 Hz
• Two independent SPDT 8-amp outputs
• cULus, CCC approved, and CE marked