The part number **W2AC-AZBA-R/N** belongs to the **W2 Series** of AC Axial Fans, manufactured by **ebm-papst**. These components are critical for thermal management in industrial equipment, server racks, and power supplies. --- ### 1. Technical Specifications Table Below are the primary electrical and mechanical characteristics for this series: | Parameter | Specification (Typical) | | :--- | :--- | | **Input Voltage** | 230 VAC | | **Frequency** | 50 / 60 Hz | | **Power Consumption** | ~11 W to 15 W | | **Airflow** | ~20 to 30 CFM (Cubic Feet per Minute) | | **Bearing Type** | Ball Bearing (Long life, multi-orientation) | | **Motor Type** | Shaded pole motor | | **Frame Material** | Die-cast aluminum | | **Impeller Material** | Plastic (PA composite) | | **Termination** | Lead wires or Terminal lugs (N-version) | --- ### 2. Part Number Breakdown The suffixing in ebm-papst models indicates specific electronic and physical configurations: * **W2AC:** Identifies the series (AC axial fan, small form factor). * **AZBA:** Specific internal motor winding and airflow characteristics (Pressure vs. Volume). * **R/N:** * **R:** Often denotes compliance with specific environmental standards (like RoHS) or specific moisture protection. * **N:** Typically indicates a specific connection type (e.g., standard lead wires or flat plugs) or a revised internal electrical insulation class. --- ### 3. Key Electronic Components & Features * **Shaded Pole Motor:** This is a simple, robust AC motor type that does not require a starting capacitor. It is highly reliable for continuous operation. * **Impedance Protection:** The motor is "impedance protected." If the fan blades are blocked (locked rotor), the internal resistance of the coils prevents the motor from drawing enough current to catch fire or melt the insulation. * **Ball Bearing System:** Unlike sleeve bearings, the ball bearings in this part allow the fan to be mounted in **any orientation** (horizontal, vertical, or angled) without affecting its 50,000+ hour lifespan. * **EMC Compliance:** Designed to minimize electromagnetic interference, making it suitable for sensitive laboratory or telecommunications environments. --- ### 4. Typical Applications 1. **Enclosure Cooling:** Preventing heat buildup in small electrical cabinets. 2. **Medical Devices:** Used in equipment requiring quiet, reliable airflow. 3. **Power Supplies:** Active cooling for high-wattage AC/DC converters.