The **M2TT-55-R/N** is a specific model of a **Miniature Toggle Switch** manufactured by **NKK Switches**. These components are widely used in industrial equipment, medical devices, and high-end consumer electronics due to their reliability and compact footprint. --- ### 1. Key Technical Specifications The model number "M2TT-55-R/N" provides specific details about the electrical and physical characteristics of the part: | Feature | Specification | | :--- | :--- | | **Switch Type** | Toggle Switch | | **Circuit Type** | DPDT (Double Pole, Double Throw) | | **Switch Function** | ON-OFF-ON (Three positions) | | **Current Rating** | 6A @ 125V AC / 3A @ 250V AC | | **Mounting Type** | PC Board (Through-hole) | | **Actuator Style** | Standard Bat Lever | | **Termination Style** | Straight PC Terminals | --- ### 2. Breakdown of the Part Number NKK Switches uses a standardized nomenclature to define their parts: * **M2**: Refers to the **M2 Series**, which are process-sealed, miniature toggle switches designed for longevity. * **TT**: Designates the **Toggle** actuator type (usually the standard metal or plastic lever). * **55**: Indicates the **DPDT** circuit with an **ON-OFF-ON** sequence (the center position is "Off"). * **R**: Typically refers to the **Actuator length or style** (Standard length). * **N**: Usually indicates **Silver Contacts** (standard power ratings). --- ### 3. Electrical & Mechanical Properties #### Electrical Performance * **Contact Resistance:** Typically 10 milliohms maximum. * **Insulation Resistance:** 1,000 Megohms minimum at 500V DC. * **Dielectric Strength:** 1,000V AC minimum between contacts for at least one minute. #### Durability * **Mechanical Life:** Designed for approximately 100,000 operations. * **Electrical Life:** Approximately 25,000 to 50,000 operations at full load. * **Operating Temperature:** Generally ranges from **-30°C to +85°C**, making it suitable for harsh environments. --- ### 4. Typical Applications Because this is a DPDT switch with a center-off position, it is commonly used for: 1. **Motor Polarity Reversal:** Changing the direction of a small DC motor. 2. **Input Selection:** Switching between two different power sources or signal paths. 3. **Control Panels:** Standard user interface toggles for industrial machinery. ---