The **MA75TCA-R** is an industrial-grade AC axial fan manufactured by **Fulltech Electric**. These fans are designed for high-performance cooling in enclosures, cabinets, and electronic racks. --- ### 1. Technical Specifications The "75" in the part number typically refers to the depth of the fan (75mm), which allows for higher static pressure compared to standard slim fans. | Feature | Specification (Typical) | | :--- | :--- | | **Input Voltage** | 230V AC (50/60Hz) | | **Dimensions** | 172mm x 150mm x 75mm (Oval Shape) | | **Bearing Type** | Dual Ball Bearing | | **Power Consumption** | ~35W to 45W | | **Airflow** | High Volume (approx. 200-240 CFM) | | **Material** | Aluminum Die-Cast Frame / PBT Thermoplastic Impeller | | **Termination** | Terminals (T) or Lead Wires | --- ### 2. Electronic Components & Construction The MA75TCA-R consists of several key electronic and mechanical parts that ensure its longevity and efficiency: #### A. The Shaded Pole Motor Unlike DC fans that use complex PCB controllers, this AC fan typically uses a **Shaded Pole** or **Capacitor Run** induction motor. * **Stator:** Laminations of silicon steel with copper windings. * **Rotor:** A squirrel-cage design that reacts to the electromagnetic field generated by the AC input. #### B. Thermal Protection The "R" in the suffix often denotes specific protection or revision features. Most units in this series include **Impedance Protection** or a **Thermal Cutoff**. This prevents the motor windings from burning out if the fan blades become obstructed (locked rotor). #### C. Bearing System It utilizes a **Dual Ball Bearing** system. * **Electronics context:** Ball bearings are preferred in industrial electronic cooling because they handle high temperatures better than sleeve bearings and allow the fan to be mounted in any orientation (horizontal, vertical, or angled). #### D. Connection Interface The **"T"** in the part number stands for **Terminal**. Instead of pre-attached wires, it features two flat metal spade terminals. This allows for: * Easy replacement without cutting wires. * Secure connection using quick-disconnect crimp connectors. --- ### 3. Application Use-Cases Because of its high static pressure and AC power drive, it is commonly found in: * **Server Racks:** Moving air through densely packed blades. * **Industrial Control Panels:** Cooling high-voltage transformers and VFDs (Variable Frequency Drives). * **Power Supplies:** Large-scale UPS systems. ---