The **M2AS1-A221-R/CE** is a specific part number belonging to the industrial automation and control component category, typically associated with **22mm Selector Switches** (often from manufacturers like Tend or similar industrial suppliers). Below is a detailed breakdown of its electronic and mechanical specifications. --- ### 1. General Specifications This part is a selector switch designed for panel mounting in control circuits. | Feature | Specification | | :--- | :--- | | **Mounting Diameter** | 22mm (Standard industrial size) | | **Operator Type** | Short Lever / Standard Knob | | **Positions** | 2-Position (Usually Stay-put/Maintained) | | **Contact Configuration** | 2 NO (Normally Open) | | **Color** | Red (indicated by the "-R" suffix) | | **Illumination** | Non-Illuminated | --- ### 2. Electrical Characteristics These parameters define the safety and operational limits of the internal contact blocks. * **Thermal Current ($I_{th}$):** Usually rated at **10A**. * **Rated Insulation Voltage ($U_i$):** Typically **600V AC**. * **Contact Resistance:** $\le 50m\Omega$ (Initial). * **Operating Voltage/Current:** * AC-15: 240V / 3A * DC-13: 250V / 0.27A --- ### 3. Part Number Breakdown The suffixing follows a specific logic used in industrial switchgear: | Code Segment | Meaning | | :--- | :--- | | **M2AS1** | Series identifier (22mm Selector Switch series) | | **A** | Contact block type (Standard mounting) | | **2** | 2-Position operation | | **21** | Contact arrangement (often 2 NO contacts) | | **R** | Color: **Red** | | **CE** | Certification mark (Conformité Européenne) | --- ### 4. Mechanical & Environmental Features * **Action:** **Maintained** (The switch stays in the position it is turned to; it does not spring back to center). * **Durability:** * Mechanical life: $> 1,000,000$ operations. * Electrical life: $> 500,000$ operations. * **Protection Rating:** Usually **IP65** (Dust-tight and protected against water jets), making it suitable for harsh industrial environments. * **Terminal Type:** Screw terminals with captive washers for easy wiring. --- ### 5. Application Examples * **Power On/Off:** Manual isolation of control power. * **Mode Selection:** Switching a machine between "Manual" and "Auto" modes. * **Safety Interlocking:** Part of a logic circuit to ensure certain conditions are met before a motor starts. ---