The **M2AMS-153-R/UL** is a specific electronic component typically categorized as a **Limit Switch** or **Micro Switch**, often utilized in industrial control systems, security devices, or appliance interlocks. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and mechanical characteristics of the M2AMS-153-R/UL: | Characteristic | Specification | | :--- | :--- | | **Switch Type** | Snap Action / Micro Switch | | **Actuator Type** | Long Lever (often with a roller or straight leaf) | | **Contact Configuration** | SPDT (Single Pole Double Throw) | | **Current Rating** | Typically 15A at 125/250VAC | | **Voltage Rating** | 250V AC / 125V DC (nominal) | | **Safety Certification** | UL (Underwriters Laboratories) Recognized | | **RoHS Compliance** | Yes (R suffix denotes RoHS compliance) | --- ### 2. Physical Construction The part is composed of several critical electronic and mechanical sub-components: * **Contacts:** Usually made of silver alloy to ensure high conductivity and resistance to arcing during high-current switching. * **Snap-Action Mechanism:** Uses a spring-loaded internal leaf to ensure the contacts switch positions rapidly, regardless of the speed of the external actuator. * **Terminals:** Typically features **Quick Connect** (spade) terminals or solder lugs for wiring. * **Housing:** Made of high-temperature thermoplastic (Phenolic or PBT) to meet UL flame retardancy standards. --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying specific features: 1. **M2AMS:** The series identifier, usually indicating a medium-sized micro switch housing. 2. **15:** Refers to the amperage rating (15 Amps). 3. **3:** Often designates the terminal style or specific lever length. 4. **R:** Indicates **RoHS** compliance (Restriction of Hazardous Substances). 5. **UL:** Signifies that the part has been tested and certified by Underwriters Laboratories for safety in the US and Canada. --- ### 4. Common Applications * **Industrial Automation:** Detecting the position of moving machine parts. * **Safety Interlocks:** Ensuring a cabinet door is closed before a machine can start. * **Consumer Appliances:** Used in microwave door latches or washing machine lids. * **HVAC Systems:** Airflow proving switches or limit controls.