The **R10S-R1W3AC** is a specialized electronic component, specifically a **high-sensitivity, low-profile electromagnetic relay** manufactured by TE Connectivity (Potter & Brumfield). Below is a detailed breakdown of its electronic specifications and internal parts. --- ### 1. General Specifications The R10 series is known for its versatility in multi-pole switching. This specific variant is optimized for AC operation and sensitive switching. | Feature | Specification | | :--- | :--- | | **Contact Arrangement** | 3 Form C (3PDT) | | **Coil Voltage** | 115V AC (Standard for 'AC' suffix) | | **Contact Rating** | 2A to 7.5A (depending on load type) | | **Termination** | Solder/Plug-in Terminals | | **Mounting** | Socket or PCB through-hole | --- ### 2. Internal Electronic Components The device consists of several critical sub-assemblies that work together to perform the switching action: #### A. The Coil Assembly * **Winding:** Fine copper wire wound around a core. In the "W3" variant, the coil is designed to operate efficiently with alternating current. * **Impedance:** Designed to limit current draw while providing enough electromagnetic force to pull the armature. #### B. Contact System (3PDT) * **3 Form C:** This means it has three independent sets of Changeover contacts. Each set has: * **Common (COM)** * **Normally Open (NO)** * **Normally Closed (NC)** * **Material:** Typically Silver-Cadmium Oxide or Gold-flashed Silver, designed to prevent "pitting" or oxidation during high-frequency switching. #### C. The Actuator Mechanism * **Armature:** A movable iron piece that responds to the magnetic field. * **Return Spring:** Ensures the contacts return to their original state (NC) once power is removed from the coil. * **Dust Cover:** A clear polycarbonate "crust" that protects the delicate internal contacts from environmental contaminants. --- ### 3. Part Number Decoder Understanding the "R10S-R1W3AC" string helps identify its specific electronic capabilities: * **R10:** Basic series designation (Multi-pole relay). * **S:** Super-sensitive version (requires less power to trigger the coil). * **R1:** Indicates the mounting/terminal style (usually solder/plug-in). * **W3:** Defines the contact rating and material (typically 2A - 5A sensitive). * **AC:** Indicates the coil is designed for **115V AC** input. --- ### 4. Technical Drawing Concept ```text [COIL] (Terminals) / \ | | <-- Electromagnetic Field \______/ || [Armature Bar] / | \ C1 C2 C3 <-- 3 Poles (Form C) ```