The R3G220-RD49-04 is a RadiCal® EC centrifugal fan featuring a 220 mm diameter, 7-blade backward-curved impeller. It operates on a nominal voltage of 115 VAC over a 100-130 VAC range, delivering a maximum airflow of 771 CFM at a speed of 3,290 RPM. The fan consumes 170 W of power and includes integrated control via a 0-10 VDC or PWM signal, along with a tachometer output. Built-in protection features include soft start, motor current limiting, locked-rotor protection, and over-temperature protection for the electronics and motor. With an IP54 ingress protection rating and a wide operating temperature range of -25 to 50°C, it is a robust solution for various cooling and air-handling systems.