The **WRS-4B2-R** is a specific model of a **Rocker Switch**, commonly used in industrial controls, power strips, and various electronic appliances. It is designed to act as a manual interface for breaking or establishing an electrical circuit. --- ### 1. Technical Specifications The following table outlines the typical electrical and mechanical characteristics of the WRS-4B2-R series: | Feature | Specification | | :--- | :--- | | **Switch Type** | Rocker Switch | | **Circuit Configuration** | DPST (Double Pole, Single Throw) | | **Actuator Action** | On-Off (Latching) | | **Current Rating** | 15A @ 125VAC / 10A @ 250VAC | | **Contact Resistance** | ≤ 50mΩ (Initial) | | **Insulation Resistance** | ≥ 100MΩ @ 500VDC | | **Dielectric Strength** | 1500VAC for 1 minute | | **Operating Temperature** | -25°C to +85°C | | **Mechanical Life** | > 10,000 Cycles | --- ### 2. Component Breakdown The WRS-4B2-R consists of several internal and external electronic parts that work in unison: 1. **Actuator (The Rocker):** The external plastic piece that the user presses. In the "R" variant, this is often **Red**. 2. **Housing:** Made of high-temperature resistant nylon (UL94V-2 rated), which holds the internal components and snaps into a panel cutout. 3. **Stationary Contacts:** Fixed metal terminals (usually silver-plated copper) that connect to the external wiring. 4. **Moving Contacts (Bridge):** A metal leaf that moves when the actuator is toggled, completing or breaking the path for the current. 5. **Terminals:** Usually 4 pins for a DPST configuration, allowing the switch to control two separate lines (Hot and Neutral) simultaneously. --- ### 3. Wiring Configuration (DPST) Since this is a **Double Pole, Single Throw** switch, it has 4 terminals. Here is how the internal logic functions: ```text [ Terminal 1 ] ---- [ Switch A ] ---- [ Terminal 2 ] [ Terminal 3 ] ---- [ Switch B ] ---- [ Terminal 4 ] ``` * When the switch is **ON**, 1 connects to 2, and 3 connects to 4. * When the switch is **OFF**, all connections are open. * This is ideal for safety as it completely isolates the device from the power source by cutting both lines. --- ### 4. Key Applications * **Power Supplies:** Main power switch for desktop units. * **Household Appliances:** Used in coffee makers, vacuum cleaners, and heaters. * **Industrial Equipment:** Control panels for small machinery. * **Audio/Video Gear:** Power management for amplifiers or mixers.