The **W2AC-A43B-R** is a specific part number typically associated with high-performance cooling solutions, most commonly identifying an **AC Axial Fan** manufactured by companies like **WALRUS** or similar industrial cooling brands. Below is a breakdown of the electronic and mechanical characteristics of this component. ### 1. General Specifications The W2AC-A43B-R is designed for industrial-grade thermal management, often used in server racks, power supplies, and control cabinets. | Feature | Description | | :--- | :--- | | **Component Type** | AC Axial Fan | | **Input Voltage** | 220V - 240V AC | | **Frequency** | 50/60 Hz | | **Bearing Type** | Dual Ball Bearing (indicated by "B") | | **Frame Material** | Die-cast Aluminum (painted black) | | **Impeller Material** | Thermoplastic (PBT) / UL 94V-0 | --- ### 2. Key Electronic Components & Design The internal electronics of the W2AC-A43B-R are engineered for reliability and continuous operation: * **Shaded Pole Motor:** This is a self-starting induction motor. It is preferred in AC fans because it has no brushes to wear out, reducing electromagnetic interference (EMI). * **Dual Ball Bearing System:** The "B" in the part number signifies ball bearings. Unlike sleeve bearings, these allow the fan to be mounted in any orientation (horizontal or vertical) and offer a significantly longer lifespan (approx. 50,000+ hours). * **Impedance Protection:** The motor windings are designed to withstand the heat generated if the rotor is locked (stalled), preventing the fan from catching fire if it becomes obstructed. * **Termination:** Usually features lead wires or terminal lugs (faston terminals) for direct connection to AC power sources. --- ### 3. Performance Metrics Based on the standard configuration for this series: | Metric | Estimated Value | | :--- | :--- | | **Size** | 120mm x 120mm x 38mm | | **Airflow** | ~90 to 110 CFM (Cubic Feet per Minute) | | **Static Pressure** | ~0.30 - 0.40 in-H2O | | **Noise Level** | 40 - 45 dB(A) | | **Operating Temp** | -10°C to +70°C | --- ### 4. Safety and Compliance The "-R" suffix often denotes **RoHS Compliance**, meaning the electronic parts and soldering processes are free from hazardous substances like lead, mercury, and cadmium. It also typically carries certifications such as: * **UL/cUL Recognized** * **TUV / CE Marking**