Based on the technical specifications for the **M2SES-2BD-R/CE**, this part number refers to a **M2 Series Electronic Selector Switch** manufactured by **IDEC**. These components are used in industrial control panels to bridge the gap between human manual input and electronic signaling. --- ### 1. Technical Specifications Overview | Parameter | Details | | :--- | :--- | | **Series** | M2 Series (Miniature Control Units) | | **Mounting Hole** | 16mm (Round) | | **Operation** | 2-Position Selector | | **Maintained/Momentary** | Maintained (Stays in position when turned) | | **Contact Configuration** | DPDT (Double Pole Double Throw) | | **Illumination** | Non-Illuminated | | **Contact Material** | Gold-clad Silver | | **Bezel Shape** | Round | --- ### 2. Breakdown of the Part Number The alphanumeric code describes the specific electronic and mechanical properties of the unit: * **M2**: The product series (16mm miniature size). * **S**: Selector switch functionality. * **E**: Electronic-level switching capability (often referring to gold contacts for low-current applications). * **S**: Standard Bezel. * **2**: 2-Position (90° angle between positions). * **B**: Knob operator style. * **D**: DPDT contact block (4 terminals for switching two independent circuits). * **R**: Color (typically refers to the knob/insert color, in this case, Red). * **CE**: Compliance marking (Conformité Européenne), indicating it meets EU safety/health standards. --- ### 3. Electronic Characteristics Because this is an **Electronic Selector**, it is designed differently than heavy-duty industrial switches: * **Low-Level Switching:** The gold-clad contacts are engineered to handle low-current signals (logic levels). This prevents "oxide film" buildup that usually occurs on standard silver contacts when used with very low voltages. * **Contact Rating:** Typically rated for 5V to 30V DC and currents as low as 1mA up to 3A (depending on the specific load type). * **Termination:** Usually features solder/tab terminals, making them ideal for PCB integration or thin-gauge wire harnesses in compact control boxes. * **Environment:** Rated IP40 (Dust protected) or IP65 (Waterproof), depending on the specific gasket installation. --- ### 4. Typical Applications * **Mode Selection:** Switching a machine between "Manual" and "Auto" modes. * **Logic Inputs:** Sending signals to a PLC (Programmable Logic Controller) or a microcontroller. * **Safety Interlocks:** Used in low-voltage control circuits to enable or disable specific functions.