The ABB 1SVR550824R9100 is a phase monitoring relay from the CM-PFE series, designed for single-function operation in 3-phase systems. It features a 4 AMP capacity, operates at 28-440 VAC with 50/60 Hz frequency, and includes 1 C/O (SPDT) output. The relay is equipped with screw-type terminals, suitable for temperatures ranging from -20 to +85 degrees Celsius, and has an IP20/50 protection rating.