The **W2RS-141-R2** is a specific part number typically associated with high-performance **Cooling Fans**, specifically AC axial fans used in industrial or server environments. It is often manufactured by brands like **Nidec** (formerly Nidec Servo). Below is a breakdown of its electronic and mechanical specifications. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Component Type** | AC Axial Cooling Fan | | **Input Voltage** | 100V - 115V AC | | **Frequency** | 50 / 60 Hz | | **Power Consumption** | Approx. 14W - 16W | | **Airflow Capacity** | ~90 - 110 CFM (Cubic Feet per Minute) | | **Bearing Type** | Dual Ball Bearing (for longevity) | | **Frame Material** | Die-cast Aluminum | | **Impeller Material** | Plastic (UL 94V-0 Rated) | --- ### 2. Internal Electronic Design The "Electronic Parts" of this fan are integrated into its motor hub: * **Shaded Pole or Capacitor-Run Motor:** Unlike DC fans that use a PCB with a controller chip, this AC fan typically uses a shaded-pole induction motor or a permanent split capacitor motor. This makes it robust against electromagnetic interference (EMI). * **Impedance Protection:** The "R" in the suffix often indicates that the motor is **Impedance Protected**. This means if the fan blades are obstructed (locked rotor), the internal resistance of the windings prevents the temperature from rising to a point that would cause a fire. * **Thermal Cutoff (Optional):** Some variations include a thermal fuse that permanently breaks the circuit if the internal coil temperature exceeds a safe limit (usually 120°C+). --- ### 3. Physical & Wiring Configuration * **Dimensions:** Usually **120mm x 120mm x 38mm**. This is the standard "Square" industrial size. * **Termination:** * **Lead Wire Version:** Two wires (Line and Neutral). * **Terminal Version:** Two flat spade terminals for quick-connect plugs. * **Rotation:** Typically counter-clockwise when looking at the rotor face. --- ### 4. Common Applications Because of its AC power input and rugged aluminum frame, it is commonly found in: 1. **Server Racks:** Exhausting heat from high-density computing units. 2. **Power Supplies:** Cooling large industrial UPS systems. 3. **Control Cabinets:** Preventing overheating in CNC or PLC enclosures. ---