The **M2AS1-A424-R/CE** is a specific model of an **Industrial Limit Switch** (often categorized under Position Switches), typically manufactured by brands like **Pizzato Elettrica** or similar industrial automation firms. These components are designed to convert mechanical motion into an electrical control signal. --- ## 1. Technical Specifications Breakdown The alphanumeric code describes the specific electronic and physical configuration of the part: | Feature | Specification | Description | | :--- | :--- | :--- | | **Contact Block** | 1NO + 1NC | One Normally Open and One Normally Closed contact. | | **Contact Type** | Snap Action | Fast switching regardless of the actuator speed. | | **Housing Material** | Metal/Technopolymer | High impact resistance for industrial environments. | | **Actuator Type** | Roller Lever | A rotating wheel on a lever, used for cam-track sensing. | | **Protection Class** | IP67 | Fully protected against dust and temporary immersion in water. | | **Connector/Entry** | M12 / PG13.5 | Standardized electrical connection point. | --- ## 2. Electronic Contact Configuration The internal electronics of this switch are designed for safety and logic control. Most variants follow this logic: ### Contact Diagram ```text Snap Action (1NO + 1NC) (13) NO o---/ ---o (14) (21) NC o---\ ---o (22) ``` ### Electrical Ratings * **Rated Insulation Voltage ($U_i$):** 500V (or 250V depending on the specific series). * **Thermal Current ($I_{th}$):** Typically 10A. * **Utilization Category:** Usually AC15 (Control of electromagnetic loads) and DC13 (Control of solenoids). --- ## 3. Key Electronic Features ### Snap Action Mechanism Unlike "Slow Action" switches, the **Snap Action** mechanism in this part ensures that the contacts transition at a constant speed, even if the physical plunger is moving very slowly. This prevents "arcing" (electrical sparks) and ensures a crisp signal for the PLC (Programmable Logic Controller). ### Positive Opening ($\Theta$) The "CE" or safety markings usually indicate that the NC (Normally Closed) contact is a **Positive Opening** type. This means that even if the internal spring fails or the contacts weld, the mechanical force of the actuator is guaranteed to push the contacts apart for safety. ### Reliability Data * **Mechanical Life:** Up to 20 million operations. * **B10d Value:** Often rated at 40 million cycles (used for calculating Functional Safety / SIL levels). --- ## 4. Common Applications * **Conveyor Systems:** Detecting the presence of a box or pallet. * **Safety Gates:** Ensuring a machine guard is closed before the motor starts. * **CNC Machinery:** Identifying the "Home" position of a moving axis.