The **WRS2-5BA-R** is a specific model of a **Rotary Switch**, typically manufactured by companies like Alcoswitch (TE Connectivity) or similar industrial component brands. It is designed for PCB mounting and is used to select different electrical paths by rotating a central shaft. --- ## 1. Technical Specifications Below are the primary electrical and physical characteristics typically associated with this part: | Characteristic | Specification | | :--- | :--- | | **Type** | Rotary Switch | | **Number of Positions** | 5 Positions | | **Number of Poles** | 2 Poles | | **Mounting Type** | Through-Hole (PCB) | | **Contact Material** | Silver or Gold plated | | **Actuator Type** | Flush or Extended Shaft | | **Termination Style** | PC Pin | --- ## 2. Key Component Details ### A. Poles and Throws (2P5T) The "2-5" in the part number indicates a **2-Pole, 5-Position** configuration. * **2-Pole:** There are two independent "common" circuits inside the switch. * **5-Position:** Each pole can connect to five different output terminals. * Rotating the switch moves both poles simultaneously to their respective output pins (1 through 5). ### B. Electrical Ratings These switches are generally low-power signal switches: * **Voltage:** Usually rated for 125VAC or 28VDC. * **Current:** Typically rated between 250mA to 500mA. * **Contact Resistance:** Low (usually <20mΩ) to ensure signal integrity. ### C. Mechanical Build * **Indexing:** The switch features a "detent" mechanism, providing tactile feedback (a "click") at each of the 5 positions. * **Stop Mechanism:** Most versions have a fixed stop at position 5, meaning it cannot rotate 360 degrees continuously. --- ## 3. Applications The WRS2-5BA-R is commonly found in: 1. **Audio Equipment:** Selecting between different input sources (CD, Aux, Phono). 2. **Test Equipment:** Selecting measurement ranges (Voltage, Amperage, Resistance). 3. **Industrial Controls:** Mode selection for machinery (Manual, Auto, Service, Off). 4. **Consumer Electronics:** Fan speed controls or lighting mode selectors. --- ## 4. Part Number Breakdown (Typical) While naming conventions vary slightly by manufacturer, the code usually breaks down as follows: * **WRS:** Series identifier (Waterproof or Washable Rotary Switch). * **2:** Number of Poles. * **5:** Number of Positions. * **BA:** Actuator/Bushings style (specific dimensions). * **R:** RoHS Compliant.