## Technical Overview: YB2-25CWCKS1 The **YB2-25CWCKS1** is a high-quality, professional-grade pushbutton switch manufactured by **NKK Switches**. It belongs to the YB2 Series, which is known for its tamper-resistant design and space-saving features. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Circuitry** | DPDT (Double Pole Double Throw) | | **Switch Function** | ON-(ON) / Momentary (Spring Return) | | **Current Rating** | 5A @ 125VAC / 250VAC; 3A @ 30VDC | | **Terminal Type** | Solder Lug / Quick Connect | | **Mounting Type** | Panel Mount, Threaded (16mm hole) | | **Illumination** | Non-Illuminated (in this specific configuration) | | **Protection Rating** | IP65 (Dust tight and water jet protected) | --- ### 2. Physical Design & Construction The YB2 series is designed for durability and tactile feedback. The parts of this specific model include: * **Actuator (Button):** Square-shaped with a metallic "Silver" finish (CWC). It features a flush mount design to prevent accidental activation. * **Housing:** Short body design, which is ideal for shallow panels where behind-panel depth is limited (1.122" or 28.5mm). * **Contacts:** Silver alloy contacts provide high reliability and a long electrical life cycle. * **Sealing:** Includes an internal o-ring and external rubber washer to achieve the **IP65 rating**, making it suitable for harsh environments. --- ### 3. Electrical Functionality (DPDT Momentary) * **DPDT (Double Pole Double Throw):** This switch controls two separate circuits simultaneously. Each "pole" can toggle between two different "throws" (outputs). * **Momentary Action:** The switch only stays in the "Active" position while it is being pressed. Once released, it springs back to its default state. * **Mechanical Life:** Rated for approximately 1,000,000 operations. * **Electrical Life:** Rated for approximately 100,000 operations at full load. --- ### 4. Component Part Number Breakdown To understand the specific features, the part number is decoded as follows: | Code | Meaning | | :--- | :--- | | **YB2** | Series Name (Square/Round Pushbutton) | | **25** | Circuit Configuration (DPDT) | | **CW** | Tamper Resistant / Shorter Body | | **CK** | Silver Contacts / Solder Lug Terminals | | **S1** | Square Cap with Metallic Finish | ---