The **R13-R** designation typically refers to a specific series of **Round Rocker Switches**. These are electromechanical components used to connect or disconnect an electrical circuit by "rocking" the actuator. The most common manufacturer for this series is **Shin Chin Industrial (SCI)**, though the part number is widely used as an industry standard by various generic manufacturers. --- ### 1. Key Technical Specifications The R13-R series generally adheres to the following electrical and physical parameters: | Feature | Specification (Typical) | | :--- | :--- | | **Contact Rating** | 10A 125VAC / 6A 250VAC | | **Circuitry** | SPST (Single Pole Single Throw) | | **Mounting Hole** | Ø 20mm (Snap-in) | | **Contact Resistance** | 50mΩ Max | | **Insulation Resistance** | DC 500V 100MΩ Min | | **Dielectric Strength** | AC 1500V 1 minute | | **Operating Temp** | -20°C to +85°C | --- ### 2. Physical Components The R13-R switch consists of four primary internal and external parts: 1. **Actuator (The Rocker):** The round plastic part the user presses. Often marked with "I" and "O" symbols. 2. **Housing:** The outer plastic shell (usually Nylon 66) that snaps into the panel. 3. **Terminals:** Usually 4.8mm (0.187") quick-connect tabs or solder lugs. 4. **Contact Mechanism:** A silver-plated copper alloy "rocker" arm inside that creates the electrical bridge. --- ### 3. Variations and Suffixes The full part number often includes suffixes that define specific features: * **R13-112A:** Basic SPST (On-Off) switch. * **R13-112B:** SPDT (On-On) switch. * **Illumination (L):** If the part number ends in "L" (e.g., R13-112L), it contains an internal **Neon lamp** (for AC) or **LED** (for DC) to indicate when the switch is ON. * **Waterproof:** Some versions come with a rubber "boot" or cap for IP65 protection. --- ### 4. Simple Wiring Diagram (SPST) ```text [ Power Source ] --- (Terminal 1) [ Switch ] (Terminal 2) --- [ Load/Device ] ``` *If the switch is illuminated, a 3rd terminal (usually gold-colored) is used to connect to the Neutral/Ground to power the internal light.* ---