The **KWTS-1CD-R** is a specific model of a **Miniature Micro Switch** (often referred to as a "Snap Action Switch"). These components are widely used in home appliances, automotive electronics, and industrial equipment due to their reliability and rapid switching capabilities. --- ### 1. Technical Specifications The "KWTS" series typically follows a standard set of electrical and mechanical parameters: | Parameter | Typical Value | | :--- | :--- | | **Circuit Configuration** | SPDT (Single Pole Double Throw) | | **Rated Voltage** | 125V / 250V AC | | **Rated Current** | 1A to 5A (varies by sub-model) | | **Contact Resistance** | ≤ 50mΩ | | **Insulation Resistance** | ≥ 100MΩ (500VDC) | | **Operating Temperature** | -25°C to +85°C | | **Electrical Life** | ~100,000 Cycles | --- ### 2. Component Structure and "R" Suffix The model number breakdown typically signifies the physical configuration of the switch: * **KWTS-1:** The series identifier for the miniature body style. * **CD:** Refers to the terminal type (usually solder terminals or quick-connect). * **-R (The Actuator):** The **"R"** usually designates a **Short Roller Lever**. * Unlike a standard plunger, the roller reduces friction when the switch is triggered by a cam or a sliding mechanical part. --- ### 3. Pinout Configuration As an SPDT switch, the KWTS-1CD-R features three connection points: 1. **COM (Common):** The main power input terminal. 2. **NC (Normally Closed):** Connected to COM when the lever is at rest. 3. **NO (Normally Open):** Connected to COM only when the roller lever is pressed. --- ### 4. Common Applications Because of the roller lever design, this part is ideal for: * **Microwave Ovens:** Detecting if the door is fully latched. * **3D Printers:** Used as an "End-stop" limit switch for the X, Y, or Z axis. * **Vending Machines:** Detecting the passage of a coin or product. * **Safety Interlocks:** Ensuring a machine cover is closed before operation begins. --- ### 5. Schematic Symbol In electronic design software (like Altium or KiCad), the switch is represented as follows: ```text (COM) | / <-- Lever / o o (NO) (NC) ```