The part number **W2AC-AB4C-R2/N** typically refers to a high-performance **Industrial Fan or Blower unit**, often manufactured by companies like **EBM-Papst** (specifically the W2AC series). These components are designed for thermal management in server racks, industrial cabinets, and telecommunications equipment. --- ### 1. Technical Specification Overview The following table breaks down the core electronic and physical attributes of this component type: | Attribute | Specification (Typical) | | :--- | :--- | | **Component Type** | AC Axial Fan / Compact Fan | | **Input Voltage** | 115V or 230V AC (Series dependent) | | **Frequency** | 50 / 60 Hz | | **Bearing Type** | Ball Bearing (Long-life) | | **Housing Material** | Die-cast aluminum | | **Impeller Material** | Sheet steel / Plastic (variant specific) | | **Termination** | Lead wires or Terminal lugs | --- ### 2. Breakdown of the Part Number Logic While specific manufacturer codes can vary slightly, the nomenclature generally follows this logic: * **W2AC:** The series designation, indicating an AC-powered axial fan designed for high-pressure air movement. * **AB4C:** Refers to the physical dimensions and motor characteristics (often 225mm to 280mm diameter range). * **R2:** Indicates the revision or the specific mounting configuration (e.g., intake/exhaust direction). * **N:** Often signifies "New Generation" or specific compliance standards (like RoHS or UL certification). --- ### 3. Key Electronic Features 1. **Motor Protection:** Most units in this series feature **Thermal Overload Protection**. If the motor exceeds its safe operating temperature, an internal thermal switch cuts power to prevent coil burnout. 2. **Impedance Protection:** The motor is designed so that even if the fan blades are obstructed (locked rotor), the winding resistance prevents the current from reaching levels that would cause a fire. 3. **Capacitor-Run Induction Motor:** These fans use a permanent split capacitor (PSC) motor design to maintain high efficiency and a stable power factor during continuous operation. 4. **Dielectric Strength:** The insulation system is typically rated for high-voltage isolation (often up to 1500V AC for 1 minute) between the power leads and the metal frame for safety. --- ### 4. Application Areas * **Server Enclosures:** Providing high-volume airflow to cool dense CPU clusters. * **HVAC Systems:** Used in small-scale air conditioning or heat exchangers. * **Industrial Power Supplies:** Cooling high-wattage transformers and rectifiers.