Ziehl-Abegg RH31M-4EK.2F.1R Centrifugal Cooling Fan

The Ziehl-Abegg RH31M-4EK.2F.1R centrifugal cooling fan is a compact, high-efficiency unit designed for industrial ventilation and equipment cooling. It uses an external rotor AC motor paired with a backward-curved impeller to deliver stable air pressure and reliable continuous-duty performance in demanding environments, and it is engineered for compact installations. With 115V single-phase supply, it draws about 1.6 A and consumes roughly 0.17 kW, and it features a 310 mm diameter (about 12 in) with a speed range of 1380–1520 RPM at 50/60 Hz. This configuration supports effective airflow and heat dissipation in HVAC systems, inverter cooling, electrical enclosures, industrial machinery, and air handling units where consistent cooling is required. Common replacements include the Ziehl-Abegg RH31M series and RH35M / RH40M series variants, offering similar form and performance characteristics for compatible installations.