What is a Bifurcated Fan?

Bifurcated fans are a type of cased axial fan designed to protect the motor from air conditions that are detrimental to the motor. Bifurcated fans use an internal casing that encloses the motor separating it from the air that is moving through the fan. Bifurcated fans are typically used in conditions such as high ambient temperatures (higher than the motor is rated for), corrosive or heavily polluted atmospheres.