Based on the part number provided, the **YB2-26CWCPG4** belongs to the **YB2 Series** manufactured by **NKK Switches**. This specific component is a high-quality, tamper-resistant, illuminated pushbutton switch. --- ### 1. Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Manufacturer** | NKK Switches | | **Series** | YB2 Series (Panel Seal) | | **Circuit** | DPDT (Double Pole Double Throw) | | **Switch Function** | On-On (Alternate Action / Latching) | | **Contact Rating** | 3A @ 125V AC / 3A @ 250V AC | | **Illumination** | LED (Bi-color or Single) | | **Bezel/Cap Material** | Metallic / Polycarbonate | | **Mounting Type** | Panel Mount, Front Threaded | | **Ingress Protection** | IP65 (Dust tight and water-resistant) | --- ### 2. Breakdown of the Part Number The alphanumeric code defines the specific mechanical and electrical characteristics of the component: * **YB2**: The series identifier (Panel Seal Pushbuttons). * **26**: Indicates the electrical capacity and circuit (DPDT). * **CW**: Refers to the "C" series housing, typically involving a splash-proof or panel-seal design. * **CP**: Defines the cap type and color (often a clear/white or metallic cap depending on the sub-catalog). * **G**: Indicates the contact material (usually gold or gold over silver for low-level or standard power). * **4**: Represents the illumination voltage or LED color configuration (Standardly indicates a specific LED brightness or color). --- ### 3. Key Electronic Features #### A. DPDT Circuitry As a **Double Pole Double Throw** switch, it can control two separate circuits simultaneously. It has six terminals: two commons, two normally open (NO), and two normally closed (NC). #### B. Alternate Action (Latching) The "On-On" function means this is a **maintained** switch. When you press it, it stays in the depressed position (latching) until you press it again to release it. #### C. Environmental Protection The "CW" designation indicates it is designed for harsh environments. It features a panel-seal construction using an O-ring, making it **IP65 rated**, which protects the internal electronic contacts from moisture and dust. #### D. Gold Contacts ("G") The use of gold-plated contacts is critical for electronic reliability. Gold does not oxidize, making this switch ideal for **low-energy logic-level applications** where even slight resistance from oxidation could interfere with the signal. --- ### 4. Common Applications * Industrial control panels. * Medical equipment interfaces. * Communication transition systems. * Outdoor kiosks (due to IP65 rating).