The **M2AS1-A313-R** is a specific part number belonging to the **M2AS series** of industrial-grade rotary switches manufactured by **Nidec Components** (formerly Copal Electronics). These components are typically used in logic switching applications where high reliability and manual input are required. --- ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Component Type** | Rotary Selector Switch | | **Number of Positions** | 3 Positions | | **Actuator Type** | Lever (Standard) | | **Mounting Type** | PCB Through-Hole (Right Angle) | | **Contact Rating** | 0.4 VA max. @ 28V AC/DC | | **Electrical Life** | 25,000 ~ 50,000 cycles | | **Operating Force** | 0.1 ~ 0.5 N·m | | **Operating Temp** | -25°C to +85°C | --- ## Part Number Breakdown The alphanumeric code follows a specific naming convention used by Nidec: * **M2AS**: Series designation (Subminiature Rotary Switch). * **1**: Number of poles (1 Pole). * **A**: Actuator style (Standard lever). * **3**: Number of switching positions (3 positions). * **13**: Terminal configuration (likely right-angle PCB terminals). * **R**: RoHS compliance / Packaging suffix. --- ## Key Features ### 1. Miniature Footprint Designed for space-constrained PCB designs. The subminiature size allows it to be used in handheld devices or dense control panels. ### 2. Logic Level Switching The gold-plated contacts ensure high reliability when switching low-current signals (0.4VA), preventing oxidation that commonly affects standard silver contacts in low-power applications. ### 3. Environmental Sealing Most units in this series feature a "washable" construction, meaning they are sealed to withstand soldering processes and board washing without internal contamination. --- ## Typical Applications * **Industrial Controls:** Setting modes of operation on a machine. * **Telecommunications:** Channel or route selection. * **Medical Equipment:** Configuration settings for diagnostic tools. * **Test & Measurement:** Range selection on handheld multimeters or oscilloscopes.