Zyvpee RDD4020B2 40mm 4020 DC24V 0.09A 2 Wires Ball Bearing Case Fan

Compact 40 mm Cooling Fan

The Zyvpee RDD4020B2 is a 40 mm square case fan with a 20 mm thickness designed for tight spaces such as small-form-factor chassis or inverter enclosures. It runs on 24 V DC at 0.09 A and uses a two-wire power connector. The ball-bearing motor and non-LED black frame suit builders who need a basic, reliable airflow source without lighting.

Two-Wire 24 V Integration

The fan connects directly to a 24 V DC supply or a compatible frequency-converter header, so it needs a voltage source that matches the 24 V rating and a two-pin header or solder points. Its slim 20 mm profile frees vertical clearance above motherboard components or inside shallow enclosures. Builders who require PWM speed control or a three- or four-pin connector cannot use this model.

Ball-Bearing Sustained Operation

The ball-bearing design maintains consistent rotation during continuous duty in inverter-cooling or chassis-exhaust roles. With a fixed 0.09 A draw at 24 V, the motor delivers steady airflow without the speed drop-off sometimes seen in sleeve-bearing units under prolonged heat. Users who need variable speed curves or ultra-quiet acoustics at low RPM will find the fixed-voltage, two-wire design limiting.