The **YB215CWCKW01-5D-JB** is a high-quality, illuminated pushbutton switch manufactured by **NKK Switches**. It belongs to the YB series, known for its modular design and "power rated" reliability. Below is a detailed breakdown of its electronic and physical components. --- ### 1. Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Manufacturer** | NKK Switches | | **Circuit Type** | DPDT (Double Pole Double Throw) | | **Switch Function** | ON-ON (Maintained/Latching) | | **Contact Rating** | 5A @ 125/250V AC or 3A @ 30V DC | | **Illumination** | LED (Amber) | | **Actuator Style** | Round, Flush Mount | | **Panel Cutout** | 16mm Diameter | | **Ingress Protection** | IP65 (Dust tight and water-resistant) | | **Termination** | Solder Lug | --- ### 2. Breakdown of the Part Number The alphanumeric code describes the specific configuration of the switch: * **YB2**: Series identifier (YB2 Series Pushbuttons). * **15**: Switch operation (15 usually denotes DPDT, maintained contact). * **CW**: Environmental protection (denotes a "Splashproof" or "Waterproof" construction). * **CK**: Actuator shape (Circular/Round). * **W01**: Silver contacts (Standard power rating). * **5D**: LED Illumination Color (**Amber**). * **JB**: Cap/Lens finish (Clear lens with a white filter or specific insert). --- ### 3. Electronic Components & Features #### A. Internal Circuitry (DPDT) The **Double Pole Double Throw** configuration means the switch controls two separate circuits simultaneously. Each pole has a common terminal that can toggle between two separate outputs. This is ideal for safety systems or complex signal routing. #### B. Illumination System The "5D" suffix indicates an integrated **Amber LED**. * **Polarity:** The LED has dedicated terminals (usually marked with + and -). * **Resistor Requirement:** Because this is a standard LED, an external current-limiting resistor is typically required unless the specific model is pre-configured for a set voltage (check the datasheet for 2V vs 12V vs 24V variants). #### C. Contact Material The switch uses **Silver Contacts**. * **Pros:** High conductivity and excellent heat dissipation for power applications. * **Application:** Best suited for high-voltage (AC) or high-current (DC) loads where small "arcing" cleans the contact surface. #### D. Sealing and Protection (IP65) The "CW" designation indicates it is **Panel Sealed**. It features an internal O-ring and a rubber seal, making it suitable for industrial environments where moisture or dust may be present. --- ### 4. Typical Wiring Example ```cpp // Logic for a DPDT Switch (Simplified) Circuit 1: - Terminal 1 (NC): Device A is ON when switch is UP - Terminal 2 (COM): Power Source - Terminal 3 (NO): Device B is ON when switch is DOWN Circuit 2: - Terminal 4 (NC): Indicator Light A - Terminal 5 (COM): Power Source - Terminal 6 (NO): Indicator Light B ```