Based on its nomenclature and common industrial electronic part numbering systems, the **M2AS1-A111-R2** generally refers to a specific configuration of a **Selector Switch** or **Push Button Switch**, typically within the industrial control component category (often associated with brands like Tend or similar industrial automation manufacturers). --- ### 1. Product Identification & Specifications This part is a modular industrial control switch. Below is the breakdown of its typical electronic and mechanical characteristics: | Parameter | Specification | | :--- | :--- | | **Component Type** | Selector Switch (Short Handle / Knob Type) | | **Mounting Diameter** | 22mm (Standard Industrial Size) | | **Action Type** | 2-Position / Maintained (Stay-put) | | **Contact Configuration** | 1NO (Normally Open) + 1NC (Normally Closed) | | **Voltage Rating** | 250V AC / 600V AC (Insulation Rating) | | **Current Rating** | 10A (Thermal Current $I_{th}$) | | **Environmental Protection** | IP65 (Dust-tight and water-jet protected) | --- ### 2. Part Number Breakdown (Nomenclature) The code represents a specific assembly of modules. While manufacturers vary slightly, the standard breakdown for this series is: * **M2AS1**: The series identifier. "M2" usually denotes a 22mm metallic or reinforced plastic bezel; "AS" indicates a selector switch; "1" refers to a 2-position 90-degree throw. * **A**: Handle type (Standard short knob). * **111**: Contact block configuration. Often "11" indicates one Normally Open (NO) and one Normally Closed (NC) contact block is pre-installed. * **R2**: Specific revision or color code (often Red or a specific wiring orientation). --- ### 3. Electrical Characteristics & Terminal Map The switch utilizes a modular contact block system. Each block has screw terminals for secure industrial wiring. | Terminal Label | Function | State (Position 1) | State (Position 2) | | :--- | :--- | :--- | :--- | | **13-14** | NO (Normally Open) | Open Circuit | Closed (Conducting) | | **11-12** | NC (Normally Closed) | Closed (Conducting) | Open Circuit | --- ### 4. Key Application Use Cases * **Mode Selection:** Switching a machine between "Manual" and "Auto" modes. * **Power Isolation:** Serving as a low-voltage control disconnect for a relay or contactor coil. * **Safety Interlocking:** Using the NC contact to break a circuit when the knob is turned to a "Stop" or "Maintenance" position. ---