The **M2AS1-A142-R** is a specific electronic component, typically categorized as a **Micro-Switch** or a **Limit Switch**. These parts are commonly used in industrial control systems, automotive mechanisms, and home appliances to detect the presence or absence of an object through physical contact. --- ### 1. Key Technical Specifications Based on the standard nomenclature for this series, here are the primary electronic and physical characteristics: | Property | Description | | :--- | :--- | | **Component Type** | Snap Action Micro-Switch | | **Actuator Style** | Standard Pin Plunger (usually) | | **Contact Configuration** | SPDT (Single Pole Double Throw) | | **Current Rating** | Typically 0.1A to 5A (depending on voltage) | | **Voltage Rating** | 125V / 250V AC | | **Termination Style** | Solder or Quick-Connect terminals | | **Operating Force** | Low to Moderate (measured in grams/newtons) | ### 2. Internal Mechanism The "Snap Action" mechanism is the core electronic feature of this part: * **Rapid Switching:** Regardless of how slowly the external lever is pressed, the internal contacts snap between positions at a constant, high speed. * **Arc Reduction:** The fast movement minimizes electrical arcing between contacts, which extends the life of the switch. * **Reliability:** It provides distinct tactile feedback and a precise "trip point" (the exact position where the circuit closes or opens). ### 3. Circuit Configuration (SPDT) The M2AS1-A142-R functions as a Single Pole Double Throw switch, meaning it has three terminals: 1. **COM (Common):** The power input. 2. **NC (Normally Closed):** The circuit is complete when the switch is *not* pressed. 3. **NO (Normally Open):** The circuit completes only when the switch *is* pressed. ### 4. Common Applications * **Door Interlocks:** Ensuring a microwave or industrial machine door is shut before operation. * **Limit Sensing:** Detecting when a printer carriage or CNC head has reached the end of its track. * **Safety Cut-offs:** Automatically shutting down a system if a panel is removed. ---