The **W2TG0-4A4-R2** is a specific technical part number, typically associated with high-performance cooling solutions, specifically **AC Axial Fans** manufactured by companies like **eBM-papst**. Below is a detailed breakdown of the electronic and mechanical specifications for this component. --- ### 1. Technical Specifications The following table summarizes the core electronic and physical attributes of the W2TG0-4A4-R2: | Feature | Specification | | :--- | :--- | | **Component Type** | AC Axial Fan | | **Voltage Rating** | 115 VAC (Typical for this series) | | **Frequency** | 50/60 Hz | | **Power Consumption** | ~20 - 30 Watts | | **Bearing Type** | Ball Bearing (Long life) | | **Housing Material** | Die-cast aluminum | | **Impeller Material** | Sheet steel / Plastic (depending on sub-batch) | | **Termination** | Lead wires or Terminal lugs | --- ### 2. Key Electronic Features #### A. Motor Construction The unit uses a **Shaded Pole Motor** or a **Capacitor Motor** (depending on the exact revision). These motors are brushless, which reduces electromagnetic interference (EMI) and increases the lifespan of the electronic assembly. #### B. Thermal Protection * **Impedance Protection:** The motor windings are designed so that if the fan is stalled (locked rotor), the internal resistance prevents the temperature from rising high enough to cause a fire or melt the insulation. * **Insulation Class:** Usually Class B or F, allowing it to operate in high-temperature environments (up to 70°C). #### C. Power Management Because it operates on alternating current (AC), it does not require an external DC driver. However, it is sensitive to frequency shifts; running a 60Hz rated fan on a 50Hz circuit will result in lower RPM and reduced cooling efficiency. --- ### 3. Application Use-Cases This part is commonly found in industrial and telecommunications equipment due to its robustness: 1. **Server Racks:** High airflow to prevent CPU overheating. 2. **Power Supplies:** Heat dissipation for large-scale industrial PSUs. 3. **Control Cabinets:** Ensuring airflow through automated PLC enclosures. --- ### 4. Wiring Identification *Typically, these units follow a standard color-coding or terminal marking:* * **L (Line):** Connection to the hot wire. * **N (Neutral):** Connection to the neutral wire. * **PE (Ground):** Usually a screw terminal on the metal housing for safety grounding. ---