The **W2AC-A3BA-R** is a specific part number associated with high-performance **AC Axial Fans**, typically manufactured by brands like **Sanyo Denki** (San Ace line) or similar industrial cooling suppliers. These fans are designed for heavy-duty thermal management in server racks, industrial cabinets, and power supplies. --- ### Technical Specifications Below is a breakdown of the typical electronic and mechanical characteristics for this series: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 100V - 115V AC (Single Phase) | | **Frequency** | 50 / 60 Hz | | **Frame Size** | 120mm x 120mm x 38mm (Standard) | | **Bearing Type** | Dual Ball Bearing (High Reliability) | | **Material** | Aluminum Frame / Plastic Impeller (UL94V-0) | | **Termination** | Lead Wires or Terminals (R-suffix often denotes Lead Wires) | | **Protection** | Impedance Protected or Thermal Protected | --- ### Key Component Analysis #### 1. The Motor Structure The "AC" in the part number signifies an **Induction Motor**. Unlike DC fans that use electronic commutation (ESC), this part utilizes the AC line frequency to create a rotating magnetic field. * **Stator:** Wound copper coils. * **Rotor:** Permanent magnet or squirrel-cage design integrated into the blade hub. #### 2. Bearing System (Ball Bearing) The "B" in many naming conventions refers to **Ball Bearings**. * **Longevity:** Rated for 40,000 to 70,000 hours of continuous operation. * **Orientation:** Can be mounted vertically or horizontally without affecting lifespan. #### 3. Safety and Reliability Features * **Class B Insulation:** Designed to withstand internal temperatures up to 130°C. * **Impedance Protection:** The motor is designed so that if the fan blade is stalled (locked rotor), the internal resistance of the coils prevents the device from catching fire. --- ### Typical Applications * **Enclosure Cooling:** Dissipating heat from electrical control panels. * **Network Gear:** Cooling high-density network switches. * **Industrial Machinery:** Providing airflow for CNC machines or laser power supplies. --- ### Part Number Decoder (Typical) While naming conventions vary slightly by manufacturer, here is how the code is generally structured: * **W2:** Series identifier (Wide airflow/High static pressure). * **AC:** Power type (Alternating Current). * **A3:** Voltage code (Often representing 100-115V range). * **BA:** Bearing and Speed designation. * **R:** RoHS compliant (or specific lead-wire configuration).