3250J Series Fans

ebm-papst’s proven 3200J S-Force series of fans run at high speeds to maintain performance against high system resistance. The 3250J S-Panther series extends this application range with fans designed specifically for lower system resistances, therefore operating at more moderate speeds. In addition, the impeller has added aeroacoustic improvements, including an artificially generated surface disturbance on the blades which acts as a turbulator, delaying an impending stall. These changes result in a substantial lowering of acoustic noise.  The sound power of the S-Panther is far lower than that of other fans, particularly in the higher frequency ranges starting at 1250 Hz. Operating at lower speeds, the S-Panther fans also achieve a 20 to 25% improvement in bearing life over the S-Force fans