The **W2AC-AC1C-R** is a specific part number typically associated with **Delta Electronics** or industrial power component distributors. It refers to a **Power Entry Module (PEM)**, specifically an AC power inlet designed for industrial and medical electronic equipment. --- ## 1. Component Overview The W2AC-AC1C-R serves as the interface between an external AC power cord and the internal circuitry of a device. It integrates multiple functions into a single housing to save space and reduce electromagnetic interference (EMI). ### Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Connector Type** | IEC 60320 C14 (Male Inlet) | | **Rated Voltage** | 115V / 250V AC | | **Rated Current** | 1A - 10A (Model dependent, typically 1A or 3A for this suffix) | | **Operating Frequency** | 50/60 Hz | | **Mounting Type** | Snap-in or Screw Mount (Panel Mount) | | **Termination** | Solder Lug or Quick Connect terminals | --- ## 2. Integrated Electronic Parts This module is not just a plastic plug; it contains several critical electronic sub-components: ### A. EMI/RFI Filter The "heart" of this part is the internal filter circuit designed to suppress electrical noise. * **Common Mode Chokes:** Inductors that block high-frequency noise common to both power lines. * **X-Capacitors:** Placed across the line and neutral to suppress differential mode noise. * **Y-Capacitors:** Placed between the line/neutral and the ground to divert noise to the earth. ### B. Fuse Holder The module usually includes a compartment for a **5x20mm glass or ceramic fuse**. This provides overcurrent protection for the entire device. ### C. Power Switch The "AC1C" portion of the code often signifies the inclusion of a **DPST (Double Pole Single Throw)** rocker switch, allowing the user to completely disconnect both the Live and Neutral lines for safety. --- ## 3. Applications Due to its integrated filtering, the W2AC-AC1C-R is found in: 1. **Medical Equipment:** Low leakage current versions for patient safety. 2. **Test & Measurement:** Oscilloscopes and signal generators requiring clean power. 3. **Industrial Automation:** Powering PLCs or sensitive controllers in noisy factory environments. 4. **Audio/Video:** Preventing "hum" or visual artifacts caused by power line interference. --- ## 4. Wiring Diagram (Conceptual) ```text AC LINE IN (C14) -> [ FUSE ] -> [ SWITCH ] -> [ EMI FILTER ] -> DC POWER SUPPLY | [GROUND] ```