The **W2AC-AB4C-R** is a specific model within the series of high-performance **AC axial fans**, typically manufactured by brands like **Wentech** or specialized industrial cooling providers. These fans are designed for thermal management in server racks, industrial cabinets, and electronic enclosures. --- ### 1. Technical Specifications Below are the core electronic and mechanical specifications for the W2AC-AB4C-R: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 220V - 240V AC | | **Frequency** | 50 / 60 Hz | | **Current Consumption** | ~0.14A to 0.22A (depending on load) | | **Power Rating** | Approx. 20W - 30W | | **Bearing Type** | Dual Ball Bearing (indicated by "B") | | **Speed** | 2,500 - 3,000 RPM | | **Airflow Capacity** | ~80 to 100 CFM | | **Termination** | Lead Wires or Terminals (usually "R" suffix indicates RoHS or specific wiring) | --- ### 2. Key Electronic Components & Features #### A. External Rotor Motor Unlike standard motors where the rotor is inside the stator, this fan uses an **external rotor design**. The fan blades are attached directly to the rotor housing, which spins around the internal copper windings (stator). This allows for: * Better heat dissipation for the motor itself. * Compact physical depth. #### B. Capacitive Start/Run As an AC motor, it typically utilizes a built-in capacitor to create a phase shift in the magnetic field, allowing the fan to start spinning in a specific direction and maintain torque. #### C. Dual Ball Bearing System The "B" in the part number usually signifies **Ball Bearings**. Electronically and mechanically, this is superior to sleeve bearings because: * It supports higher temperatures. * It allows for mounting in any orientation (horizontal or vertical). * It extends the MTBF (Mean Time Between Failures) significantly. #### D. Thermal Protection Most fans in this class include **Impedance Protection**. This means that if the fan blades are obstructed (locked rotor), the internal resistance of the coils prevents the motor from drawing enough current to catch fire or melt the insulation. --- ### 3. Application Areas * **Networking Gear:** Cooling switches and routers. * **Power Supplies:** Heat extraction for high-wattage industrial PSUs. * **Control Cabinets:** Preventing overheating in PLC (Programmable Logic Controller) housings. ---