The **M2RTS-R-21-R/UL** is a specific model within the **M2 series** of miniature toggle switches manufactured by **NKK Switches**. These components are widely used in industrial, medical, and aerospace applications due to their high reliability and compact footprint. --- ## 1. Component Specification Overview Below is a breakdown of the technical specifications for this specific part number: | Feature | Specification | | :--- | :--- | | **Switch Type** | Miniature Toggle Switch | | **Circuit Configuration** | DPDT (Double Pole, Double Throw) | | **Switching Function** | ON - (ON) / Momentary | | **Contact Rating** | 6A @ 125V AC; 3A @ 250V AC | | **Terminal Type** | Right-Angle PC Mount | | **Actuator Style** | Standard Bat Lever | | **Safety Approval** | UL (Underwriters Laboratories) Recognized | --- ## 2. Key Electronic Features ### A. Circuitry: DPDT This part features a **Double Pole, Double Throw** configuration. This means it controls two separate electrical circuits simultaneously. Each "pole" has a common terminal that can switch between two different output paths. ### B. Momentary Action The "(ON)" in the specification denotes a **momentary** position. When the user toggles the switch to that side, it completes the circuit; once released, a spring mechanism automatically returns the lever to the center or the opposite resting position. ### C. Right-Angle PC Terminals The suffix `-R` indicates a **right-angle orientation**. This is designed for mounting on a Printed Circuit Board (PCB) where the actuator needs to protrude from the side of an enclosure rather than the top. ### D. Construction & Durability * **Contacts:** Usually silver-plated or gold-plated to ensure low contact resistance and prevent oxidation. * **Dielectric Strength:** Typically rated for 1,000V AC minimum between contacts, ensuring safety against high-voltage spikes. * **Mechanical Life:** Designed for over 50,000 to 100,000 cycles. --- ## 3. Part Number Breakdown The nomenclature provides specific details about the component's build: | Segment | Meaning | | :--- | :--- | | **M2** | Series Designation (Miniature Toggle) | | **RTS** | Right Angle, Threaded Bushing, Standard Actuator | | **R** | Right Angle PCB Mounting | | **21** | DPDT Circuitry | | **R/UL** | RoHS Compliant and UL Safety Standards Certified | --- ## 4. Typical Applications * **Control Panels:** Reset switches or mode selection. * **Medical Equipment:** High-reliability user interfaces. * **Telecommunications:** Signal routing and power switching in rack-mounted hardware. * **Test & Measurement:** Calibration or momentary pulse triggering. ---