What stands out about this unit is the ABB brand, which looks professional and well made for the price.
ABB SSAC PLMU11 PC606 3-Phase Voltage Monitor Relay 200-480VAC SPDT 8-Pin
What stands out about the model PSR-SCP-24UC/ESA4/2X1/1X2 2963750 is how it helps avoid mix-ups during replacements.