The **YB225CWCKG01-24-JS** is a high-quality, illuminated push-button switch manufactured by **NKK Switches**. It belongs to the YB series, known for its tamper-resistant design and sleek aesthetics. --- ### 1. Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Manufacturer** | NKK Switches | | **Circuit Type** | DPDT (Double Pole Double Throw) | | **Switch Function** | ON-ON (Maintained/Latching) | | **Current Rating** | 0.4VA Max @ 28V AC/DC (Logic Level) | | **Illumination Type** | LED (Bi-color or Single) | | **LED Voltage** | 24V DC | | **Cap Color/Style** | Yellow (J), Silver Frame (S) | | **Mounting Type** | Panel Mount, Threaded (16mm) | | **Ingress Protection** | IP65 (Dust tight, Water resistant) | --- ### 2. Breakdown of the Part Number Understanding the internal electronic and physical components can be done by deconstructing the part number: * **YB225**: Represents the series and the DPDT circuit. DPDT means it can control two separate electrical circuits simultaneously. * **CW**: Indicates a "Circular" shape with a "Waterproof" (IP65) rating. * **CK**: Refers to the mounting and terminal style (usually solder lug). * **G**: This is a critical electronic detail. It signifies **Gold Contacts**. Gold is used for "Logic Level" applications where the voltage and current are very low, preventing oxidation. * **01**: Standard hardware/construction code. * **24**: Specifies the internal LED resistor is rated for **24 Volts**. * **JS**: The aesthetic finish. **J** stands for the Yellow insert color, and **S** stands for the metallic Silver bezel. --- ### 3. Electronic Characteristics #### Contact Mechanism The switch utilizes a **snap-action mechanism**. This ensures that the transition between "ON" and "OFF" is crisp and reduces the risk of electrical arcing, which extends the life of the gold-plated contacts. #### Illumination (LED) The internal LED is integrated into the switch housing. Because it is rated at 24V, it includes a built-in current-limiting resistor. This allows you to connect it directly to a 24V power supply without burning out the LED. #### Application Environment Because of the **0.4VA rating**, this switch is designed for **signal switching** (PLC inputs, logic gates, or microcontrollers) rather than high-power loads like motors or large heaters. ---