The **YB216CWCKG01-24-FB** is a high-quality, illuminated pushbutton switch manufactured by **NKK Switches**. It belongs to the YB2 series, known for being tamper-resistant and splash-proof. --- ### 1. Part Number Breakdown To understand the electronic and physical characteristics, we can decode the part number: | Segment | Code | Description | | :--- | :--- | :--- | | **Series** | YB2 | YB2 Series Pushbutton Switches | | **Poles/Circuit** | 16 | SPDT (Single Pole Double Throw) | | **Mounting/Seal** | CW | Panel Seal (IP65 rated), Power Rated | | **Shape** | CK | Round Shape | | **Contacts** | G | Gold Contacts (Logic Level) | | **Termination** | 01 | Solder Lug Terminals | | **Voltage** | 24 | 24V DC LED Voltage | | **LED Color** | F | Green LED | | **Cap Color** | B | White Cap | --- ### 2. Electrical Specifications This specific model is designed for **low-energy (logic level)** applications rather than high-power switching, indicated by the gold contact plating. | Parameter | Specification | | :--- | :--- | | **Contact Rating** | 0.4VA maximum @ 28V AC/DC maximum | | **Contact Material** | Gold over Nickel over Copper Alloy | | **Insulation Resistance** | 1,000 Megohms minimum @ 500V DC | | **Dielectric Strength** | 1,000V AC minimum between contacts | | **LED Voltage** | 24V DC | | **Switch Action** | ON-ON (Latching/Maintained) | --- ### 3. Physical & Environmental Features * **Sealing:** Meets **IP65** standards of IEC60529 (dust-tight and protected against water jets). * **Mechanical Life:** 1,000,000 operations minimum. * **Electrical Life:** 100,000 operations minimum. * **Operating Temp:** -25°C through +50°C (with illumination). * **Tamper Resistance:** The "CW" designation indicates a low-profile bezel that resists prying. --- ### 4. Typical Connection Diagram Since this is an **SPDT** switch, it has three terminals for the switch circuit (Common, Normally Open, Normally Closed) and two for the LED. ```text LED Terminals: (+) L1 --- [24V DC] (-) L2 --- [GND] Switch Terminals: [1] --- Normally Closed (NC) [2] --- Common (COM) [3] --- Normally Open (NO) ```