The **M2AS1-A343-R/N** is a specialized electronic component, typically categorized as a **Magnetic Proximity Sensor** or a **Reed Switch Assembly**, often used in industrial automation for position sensing. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. Component Overview The device functions as a non-contact switch that changes state (Open or Closed) when it detects a magnetic field. | Feature | Specification | | :--- | :--- | | **Type** | Magnetic Proximity / Reed Switch | | **Output Type** | SPST (Single Pole Single Throw) | | **Contact Form** | Normally Open (N.O.) or Normally Closed (N.C.) depending on suffix | | **Actuation** | Magnetic Field (Permanent Magnet) | | **Mounting** | Threaded Barrel (M12 or similar) | --- ### 2. Key Electronic Parts & Construction The internal anatomy of this part consists of three primary elements: 1. **The Reed Capsule:** A hermetically sealed glass tube containing two ferromagnetic flexible metal contacts (reeds). These are often plated with rhodium or ruthenium to ensure high electrical durability. 2. **Protection Circuitry:** Many "-R" or "-N" variants include an internal resistor or a varistor to protect the delicate reed contacts from "arcing" during inductive load switching. 3. **Housing:** Usually a nickel-plated brass or stainless steel threaded body, which provides electromagnetic shielding and physical protection against harsh industrial environments. --- ### 3. Technical Specifications (Typical) While exact specs can vary by the specific manufacturer (such as Misumi or CHR), these are the standard electrical parameters: | Parameter | Value | | :--- | :--- | | **Max Switching Voltage** | 100V - 250V AC/DC | | **Max Switching Current** | 0.5A - 1.0A | | **Contact Resistance** | < 150 mΩ | | **Operating Temperature** | -10°C to +70°C | | **Response Time** | < 1.0 ms | --- ### 4. Part Number Breakdown * **M2AS1:** Series designation (typically refers to a specific body style or magnetic sensitivity). * **A343:** Specific configuration code (length of lead wire, thread pitch, or sensitivity range). * **R/N:** * **R:** Often indicates a specific **Reed** switch type or a specific **Resistor** inclusion. * **N:** Typically denotes **NPN** output (if it's a Hall Effect sensor) or a **Normally Open** configuration. --- ### 5. Common Applications * **Pneumatic Cylinders:** Detecting the end-of-stroke position of a piston. * **Safety Interlocks:** Ensuring a machine guard is closed before operation. * **Pulse Counting:** Measuring the RPM of a rotating shaft by sensing a magnet on the gear.