The **R10S-R1W2AC** is a specific part number typically associated with an **Electromechanical Relay** manufactured by TE Connectivity (formerly Potter & Brumfield). Below is a detailed breakdown of its electronic components, specifications, and structure. --- ## 1. Technical Specifications This relay is designed for low-to-medium power switching applications, often used in industrial control circuits. | Feature | Specification | | :--- | :--- | | **Relay Type** | Electromechanical (Dry Contact) | | **Coil Voltage** | Typically 115V - 120V AC | | **Contact Arrangement** | 2 Form C (DPDT - Double Pole Double Throw) | | **Contact Rating** | 2A to 7.5A (Depending on load type) | | **Mounting Type** | Socketable / Plug-in or PCB Mount | | **Enclosure** | Clear Plastic Dust Cover | --- ## 2. Key Electronic Components The internal construction of the R10S-R1W2AC consists of four main functional sections: ### A. The Electromagnetic Coil * **Function:** Converts electrical energy into a magnetic field. * **Winding:** Composed of fine copper wire wrapped around a core. * **Sensitivity:** The "S" in the part number often indicates a **Sensitive Coil**, meaning it requires very low power to actuate compared to standard relays. ### B. The Armature and Spring * **Armature:** A balanced metal lever that moves when the coil is energized. * **Spring:** Provides the "restoring force" to return the contacts to their original position once power is removed. ### C. Contact Set (2 Form C / DPDT) * **Material:** Usually Silver-Cadmium Oxide or Gold-flashed Silver. * **Configuration:** * **Common (COM):** The moving part. * **Normally Closed (NC):** Connected to COM when the coil is OFF. * **Normally Open (NO):** Connects to COM when the coil is ON. ### D. The Header/Base * **Pin Layout:** Features a multi-pin configuration (usually 8 or 14 pins depending on the specific R10 series sub-type). * **Insulation:** High-dielectric plastic base to prevent arcing between pins. --- ## 3. Part Number Decoding (R10 Series) To understand the "electronic DNA" of this part, we look at the naming convention: | Code | Meaning | | :--- | :--- | | **R10** | Basic Series Number (General purpose relay) | | **S** | Sensitive Coil (Lower power requirement) | | **R1** | Contact rating/material (Specifies current capacity) | | **W** | Mounting/Terminal style (e.g., Solder/Plug-in) | | **2** | Number of Poles (2 = DPDT) | | **AC** | Coil Type (Alternating Current) | --- ## 4. Application Context Because of the **2 Form C** configuration and the **Sensitive Coil**, this part is commonly used in: * **Logic Control:** Interfacing between a low-power controller and a higher-power motor or lamp. * **Signal Switching:** Routing two independent signals simultaneously. * **Legacy Maintenance:** Replacing relays in older industrial machinery or elevator control panels.