Based on the part number **W2AC-ACBC-R/Q**, this component belongs to the **W2 Series** of Miniature Rocker Switches manufactured by **NKK Switches**. --- ### 1. Part Number Breakdown The alphanumeric code identifies specific electrical and physical characteristics of the switch: | Segment | Code | Description | | :--- | :--- | :--- | | **Series** | **W** | Miniature Rocker Switch (Washable/Waterproof) | | **Circuit** | **2** | DPDT (Double Pole, Double Throw) | | **Function** | **A** | ON - NONE - ON (Maintained) | | **Actuator** | **C** | Standard Rocker Actuator | | **Bushing** | **AC** | PC Mount with Threaded or Snap-in options (Series Specific) | | **Terminals** | **BC** | Straight PC Terminals with specific spacing | | **Contact Material**| **R** | Gold Contacts (Low Logic Level) | | **Certification** | **Q** | UL and CSA Recognized (General Safety Standards) | --- ### 2. Electrical Specifications As indicated by the **"R"** suffix (Gold), this switch is designed for low-energy logic circuits rather than high-power applications. * **Contact Rating:** Maximum 0.4VA at 28V AC/DC. * **Operating Range:** 0.1mA to 100mA. * **Contact Resistance:** 50 milliohms maximum. * **Insulation Resistance:** 500 Megohms minimum at 500V DC. * **Dielectric Strength:** 500V AC minimum between contacts for at least one minute. --- ### 3. Physical & Environmental Features The W2 series is specifically engineered for reliability in harsh or industrial environments. * **Sealing:** These switches are generally **IP67 rated**, meaning they are dust-tight and protected against temporary immersion in water. This makes them "washable" during PCB soldering processes. * **Mechanical Life:** Typically rated for 50,000 to 100,000 operations. * **Temperature Range:** -30°C to +85°C (-22°F to +185°F). * **Mounting:** Designed for through-hole mounting on a Printed Circuit Board (PCB). --- ### 4. Typical Applications Because of the **DPDT** configuration and **Gold** contacts, this part is commonly used in: 1. **Handheld Devices:** Where space is limited and moisture protection is required. 2. **Medical Equipment:** Requiring reliable, low-power signal switching. 3. **Industrial Controls:** Used as a logic-level input for PLCs or microcontrollers. 4. **Telecommunications:** Signal routing in outdoor or high-humidity environments.