The **10VS-4B0-R** is a specific part number belonging to a series of **Power Line EMI Filters** (Electromagnetic Interference filters), typically manufactured by companies like Delta Electronics. These components are designed to suppress electromagnetic noise in electrical power lines. --- ### Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Feature | Specification | Description | | :--- | :--- | :--- | | **Rated Voltage** | 115/250 VAC | Compatible with standard global AC mains. | | **Rated Current** | 10 Amperes | Maximum continuous current at 40°C. | | **Operating Frequency** | 50/60 Hz | Standard AC grid frequency. | | **Termination Style** | Solder Lug / Fast-on | Typical "4" series uses spade or solder terminals. | | **Leakage Current** | Standard | Designed for general purpose industrial/commercial use. | | **Mounting Type** | Flange Mount | Designed to be bolted onto a chassis. | --- ### Core Components Internal to the Filter The "10VS" series is generally a **single-stage filter**. It contains the following internal electronic components arranged in a "Pi" or "LC" network: 1. **X-Capacitors (Line-to-Line):** These suppress **differential mode** interference (noise between the hot and neutral wires). 2. **Y-Capacitors (Line-to-Ground):** These suppress **common-mode** noise (noise between the power lines and the equipment chassis/earth). 3. **Common-Mode Choke (Inductor):** A dual-wound coil on a single core that provides high impedance to common-mode signals while allowing the 50/60Hz power to pass. 4. **Bleeder Resistor:** A high-value resistor connected across the capacitors to discharge stored energy when power is disconnected for safety. --- ### Key Applications This specific filter is used in environments where electronic "noise" could disrupt sensitive equipment or where the device must comply with FCC/CE emissions standards: * **Industrial Automation:** Protecting PLCs and sensors from motor drive noise. * **Medical Equipment:** (Note: "VS" is general-purpose; medical versions usually have lower leakage "M" suffixes). * **Power Supplies:** Integrated into the input stage of switched-mode power supplies (SMPS). * **Office Equipment:** Copiers, printers, and large-scale computing hardware. --- ### Mechanical Dimensions (Typical) * **Housing:** Metal casing (acts as a shield against radiated EMI). * **Weight:** Approximately 60-100 grams. * **Mounting:** Two-hole flange for secure grounding to the metal chassis.