Based on the part number **M2RTS-R-21-R2/Q**, this component belongs to the **M2 series** of miniature toggle switches, typically manufactured by companies like **NKK Switches**. Below is a detailed breakdown of the electronic and mechanical specifications for this specific part. --- ## 1. Part Number Deciphering | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **M2** | Series | Miniature Process Sealed Toggle Switches | | **RTS** | Actuator | Round Toggle (Standard Short) | | **R** | Bushing | Threaded Bushing (Standard) | | **21** | Circuit | **DPST** (Double Pole Single Throw) | | **R2** | Terminals | Right Angle PC Mount (0.150" pitch) | | **/Q** | Rating/Material | Silver Contacts (High Power Rating) | --- ## 2. Technical Specifications These switches are designed for PCB mounting where space and environmental sealing are critical. ### Electrical Characteristics * **Contact Rating:** 6A @ 125V AC or 3A @ 250V AC. * **Contact Resistance:** 10 milliohms maximum. * **Insulation Resistance:** 1,000 Megohms minimum @ 500V DC. * **Dielectric Strength:** 1,000V AC minimum between contacts for at least one minute. * **Mechanical Life:** 100,000 operations minimum. ### Physical Construction * **Sealing:** These units are often "Process Sealed," meaning they feature an internal O-ring and ultrasonic welding to withstand automated wave soldering and cleaning processes. * **Mounting Type:** Right-Angle PC (Printed Circuit) terminals, meaning the switch sits horizontally on the board while the toggle sticks out the side. * **Material:** Silver (indicated by /Q) provides high conductivity and handles higher current loads compared to gold-plated logic-level versions. --- ## 3. Circuit Configuration: DPST The **21** designation indicates a **Double Pole, Single Throw** configuration. | Position | UP | CENTER | DOWN | | :--- | :--- | :--- | :--- | | **State** | ON | None | OFF | | **Action** | Connects 1-3 & 4-6 | N/A | Disconnects | --- ## 4. Key Applications * **Industrial Control:** Panels requiring rugged, sealed switching. * **Medical Equipment:** Devices that require frequent cleaning/disinfecting (due to the sealed nature). * **Telecommunications:** Signal switching in high-density rack environments.