The **W2AC-A4CA-R2** is a specific part number typically associated with high-performance **AC Axial Fans**, often manufactured by companies like **Sanyo Denki** (San Ace series) or similar industrial thermal management providers. Below is a breakdown of its technical specifications, electronic components, and physical characteristics. --- ### 1. Technical Specifications The following table outlines the typical electrical and mechanical parameters for this component: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 200V - 240V AC (50/60Hz) | | **Frame Size** | 120mm x 120mm x 38mm (Standard Square) | | **Bearing Type** | Dual Ball Bearing (High Durability) | | **Power Consumption** | ~15W - 20W (Varies by frequency) | | **Speed** | 2,700 - 3,100 RPM | | **Airflow** | ~90 - 110 CFM | | **Material** | Aluminum Die-cast Frame / Plastic Impeller (UL94V-0) | --- ### 2. Key Electronic Components & Features The W2AC-A4CA-R2 is not just a simple motor; it incorporates several internal electronic safety and efficiency features: * **Shaded Pole or Capacitor-Run Motor:** These fans typically utilize an induction motor design. The "AC" designation indicates it runs directly off mains power without needing an external DC rectifier. * **Impedance Protection:** The internal windings are designed to limit current flow even if the rotor is locked (stalled). This prevents the fan from catching fire if it becomes obstructed. * **Insulation Class:** Usually rated as **Class B or Class F**, meaning the internal wiring can withstand temperatures up to 130°C–155°C without the insulation breaking down. * **Termination:** The "R2" suffix often denotes the lead-wire configuration (usually 2 wires for power) or a specific connector type used for industrial integration. --- ### 3. Application Use-Cases Because of its robust construction, this part is commonly found in: 1. **Server Racks:** Cooling high-density computing hardware. 2. **Industrial Control Panels:** Preventing overheating in PLC and motor drive enclosures. 3. **Power Supplies:** Large-scale AC/DC converters that require constant thermal regulation. 4. **Medical Equipment:** Devices requiring long-term reliability and low failure rates. --- ### 4. Wiring Diagram Representation The electrical connection is straightforward for AC fans: ```text [ AC Power Source ] | +---- (Brown/Black Wire) ----> [ L - Live ] | +---- (Blue/White Wire) ----> [ N - Neutral ] | +---- (Green/Yellow) ----> [ PE - Earth Ground ] (If Metal Frame) ```