The **KFS-B1-R** is an electronic component, typically categorized as a **Limit Switch** or a **Micro Switch**, commonly used in industrial automation, mechanical positioning, and safety systems. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications The KFS-B1-R is designed to convert mechanical motion into an electrical signal. It is often identified by its compact size and high reliability in switching operations. | Feature | Specification Details | | :--- | :--- | | **Type** | Micro Switch / Basic Switch | | **Circuitry** | SPDT (Single Pole Double Throw) | | **Actuator Type** | Roller Lever (denoted by the 'R' suffix) | | **Termination** | Solder terminals or Quick-connect terminals | | **Operating Force** | Typically ranges from 0.5N to 1.5N | --- ### 2. Electrical Ratings These ratings define the limits under which the switch can safely operate without electrical failure or overheating. * **Voltage Rating:** Usually rated for both AC and DC applications (e.g., 125V/250V AC). * **Current Rating:** Typically supports loads between **5A to 10A**, depending on the specific manufacturer variant. * **Contact Resistance:** $\leq$ 30m$\Omega$ (Initial). * **Insulation Resistance:** $\geq$ 100M$\Omega$ (at 500V DC). --- ### 3. Internal Components & Materials The KFS-B1-R consists of several critical electronic and mechanical parts: | Component | Material/Function | | :--- | :--- | | **Contacts** | Often **Silver Alloy** for high conductivity and oxidation resistance. | | **Housing** | Phenolic or Thermoplastic (PBT) for high heat resistance and insulation. | | **Spring Mechanism** | Beryllium copper or Stainless steel to ensure snap-action response. | | **Actuator (Roller)** | Polyacetal (POM) or Stainless steel to reduce friction during physical contact. | --- ### 4. Circuit Logic (SPDT) The device follows a standard **Single Pole Double Throw** configuration, meaning it has three pins: 1. **COM (Common):** The input terminal. 2. **NC (Normally Closed):** Connected to COM when the lever is at rest. 3. **NO (Normally Open):** Connects to COM only when the lever is depressed. ```text [ COM ] | /-----^-----\ [ NC ] [ NO ] (Default) (Triggered) ``` --- ### 5. Common Applications * **Safety Interlocks:** Detecting if a machine door is closed. * **Conveyor Systems:** Sensing the presence of an object on a belt. * **Control Panels:** Acting as a manual reset or limit trigger. * **Home Appliances:** Used in microwave door latches or washing machine lids.