The **R10S-R1W1AC** is a specific part number typically associated with **Potter & Brumfield (TE Connectivity)** R10 series relays. These are versatile, multi-pole electromechanical relays often used in industrial control, communication, and medical equipment. Below is a breakdown of the electronic specifications and characteristics based on the standard nomenclature for this series. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Relay Type** | General Purpose / Low Profile | | **Coil Voltage** | AC Voltage (typically 120V or 240V depending on suffix) | | **Contact Arrangement** | 1 Form W (SPDT-NO-DM) or similar | | **Contact Current Rating** | 2 Amps to 7.5 Amps (depending on load) | | **Mounting Type** | Socketable / Plug-in | | **Termination** | Solder/Plug-in terminals | --- ### 2. Part Number Deciphering To understand the electronic internals, we break down the alphanumeric code: * **R10**: The series designation (Cradle-style relay). * **S**: Indicates the sensitivity or coil adjustment (Sensitive). * **R1**: Indicates the mounting and terminal style (Solder/Plug-in with 6-32 tapped hole). * **W1**: Represents the contact rating and material (typically Silver-Cadmium Oxide or similar, designed for power switching). * **AC**: Specifies that the coil is designed to operate on **Alternating Current**. --- ### 3. Internal Components & Operation #### A. The Coil (Electromagnet) The "AC" designation indicates the coil includes a **shading ring** (a small copper loop on the core). This prevents "chatter" or humming by creating a secondary magnetic field that stays active even when the AC sine wave crosses zero volts. #### B. Contact System The **W1** contacts are engineered for medium-duty power. * **Switching Life:** Typically 100,000 operations at full rated load. * **Material:** Often Silver-Cadmium Oxide, which provides a good balance between conductivity and resistance to "welding" under high-inrush currents. #### C. Mechanical Structure * **Dust Cover:** Usually encased in a clear polycarbonate (plastic) shell to protect the delicate leaf springs from environmental contaminants. * **Return Spring:** A high-tension spring ensures the contacts return to the "Normally Closed" state quickly once the coil is de-energized. --- ### 4. Typical Applications Due to its reliability and compact size for a multi-pole relay, it is found in: 1. **Industrial Timers:** Used as the switching element. 2. **Logic Control:** Interfacing between low-power sensors and high-power motors. 3. **Test Equipment:** Signal routing where low contact resistance is required. ---