The **LCS-03-R** is an electronic component primarily classified as a **Limit Switch** or **Subminiature Microswitch**. It is widely used in industrial controls, robotics, and consumer electronics to detect position or travel limits. --- ## 1. Technical Specifications The electrical characteristics define how the switch handles power and its physical durability. | Feature | Specification | | :--- | :--- | | **Switch Type** | Subminiature Microswitch | | **Actuator Style** | Simulated Roller Lever | | **Contact Configuration** | SPDT (Single Pole Double Throw) | | **Current Rating** | 3A or 5A (model dependent) at 125/250 VAC | | **Operating Force** | ~150gf (Grams-force) | | **Termination** | PCB Solder Terminals (Right Angle) | | **Mechanical Life** | 1,000,000 Cycles | --- ## 2. Pinout Configuration As an SPDT switch, the LCS-03-R features three primary terminals: 1. **COM (Common):** The input terminal where the signal or power enters. 2. **NC (Normally Closed):** The circuit is complete when the lever is at rest. 3. **NO (Normally Open):** The circuit completes only when the lever is depressed. --- ## 3. Key Electronic Components & Materials * **Contacts:** Usually made of **Silver Alloy** to ensure high conductivity and resistance to oxidation/arcing during high-frequency switching. * **Housing:** Constructed from high-temperature **Thermoset Plastic** (often PBT or Nylon) to prevent melting during soldering or high-load operation. * **Internal Spring:** A precision leaf spring (usually Beryllium Copper) provides the "snap-action" mechanism, ensuring a rapid transition between contacts to minimize electrical noise. --- ## 4. Typical Applications * **3D Printers:** Used as "Endstops" to determine the X, Y, or Z axis home positions. * **Safety Interlocks:** Detecting if a door or panel is closed before a machine starts. * **Office Equipment:** Detecting paper jams or tray presence in printers and photocopiers. ---