The **W2AC-A4CC-R2** is a specific part number belonging to the **NKK Switches** WR Series. It is a high-capacity, environmentally sealed rocker switch designed for demanding industrial applications. ### 1. Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Manufacturer** | NKK Switches | | **Circuit Type** | DPST (Double Pole Single Throw) | | **Switch Function** | ON-OFF | | **Current Rating** | 15A @ 125/250V AC | | **Ingress Protection** | IP67 (Dust tight and Water immersion) | | **Termination Style** | Wire Leads (Custom harness style) | | **Actuator Style** | Concave Rocker | | **Mounting Type** | Panel Mount, Snap-in | --- ### 2. Electronic & Mechanical Breakdown #### Circuitry: DPST The "Double Pole Single Throw" configuration means the switch controls two separate circuits simultaneously. When flipped, it connects or disconnects both lines at once. This is commonly used to disconnect both the **Hot** and **Neutral** lines in AC applications for safety. #### Environmental Sealing (IP67) The "W" in the series prefix denotes its **waterproof** capabilities. * **Outer Seal:** A silicone rubber boot or integrated gasket protects the actuator. * **Inner Seal:** The base is epoxy-sealed to prevent moisture, oil, or dust from entering the contact chamber through the wire leads. #### Contact Material These switches typically utilize **Silver Alloy** contacts. Silver provides excellent conductivity and can handle the "arcing" that occurs when switching 15-amp inductive loads without welding the contacts together. #### Wiring (The "CC" Suffix) The suffix **-A4CC-R2** indicates a specific wire lead configuration rather than standard solder lugs or quick-connect terminals. * **Wire Leads:** It comes pre-wired with 18AWG or 16AWG leads. * **Connectors:** Often features a specific housing/connector (like a Molex or Deutsch style) for "plug-and-play" integration into industrial harnesses. --- ### 3. Key Applications Due to its rugged construction and high amperage rating, this part is typically found in: 1. **Marine Equipment:** Dashboards and control panels exposed to salt spray. 2. **Construction Machinery:** External controls for heavy-duty vehicles. 3. **Food Processing:** Equipment that requires frequent wash-downs. 4. **Medical Equipment:** Devices requiring high reliability and fluid resistance. ---