The **YB225CWCKW01-5C-EB** is a specific part number for a high-quality, illuminated pushbutton switch manufactured by **NKK Switches**. This component belongs to the YB2 Series, known for being panel-seal rated and having a low profile. ### 1. Part Number Breakdown Understanding the specific electronics involves decoding the manufacturer's nomenclature: | Code Segment | Feature | Description | | :--- | :--- | :--- | | **YB2** | Series | YB2 Series Low Profile Pushbutton | | **25** | Circuit | DPDT (Double Pole, Double Throw) | | **CW** | Sealing | Panel Sealed (IP65 Rated) | | **CK** | Mounting | Bushing Mount (Round) | | **W01** | Terminals/Rating | Silver Contacts, 5A @ 125/250V AC | | **5C** | LED Color | Red LED Illumination | | **EB** | Cap/Bezel | Yellow Cap with White Filter/Diffuser | --- ### 2. Electrical Specifications The internal electronics are designed for power switching and visual feedback. * **Switching Mechanism:** * **Contact Type:** Silver (standard for power switching). * **Function:** Momentary (On-Mom). The circuit is only closed while the button is being pressed. * **Rating:** 5 Amps at 125V AC or 250V AC; 3 Amps at 30V DC. * **Illumination (LED):** * **Voltage/Current:** Typically requires a forward voltage ($V_f$) of ~2.0V for Red. * **Note:** This is a discrete LED; if your supply is higher (e.g., 12V or 24V), you must use an external current-limiting resistor. * **Insulation Resistance:** 200 Megohms minimum at 500V DC. * **Dielectric Strength:** 1,000V AC minimum between contacts; 1,500V AC minimum between contacts and case. --- ### 3. Mechanical & Environmental Features The "CW" designation indicates specific electronic protection against the environment. * **Ingress Protection:** **IP65** rated (Dust-tight and protected against water jets). This is achieved via an internal O-ring and a silicone rubber seal. * **Terminals:** Solder lug terminals (can also be used with Quick Connect if specified). * **Actuation Force:** 1.5 Newtons (Single Pole) to 3.0 Newtons (Double Pole). --- ### 4. Wiring Diagram Representation Because it is a **DPDT** switch, it has 6 terminals for the switch contacts and 2 for the LED. ```text Switch Terminals: LED Terminals: [ 1 ] [ 4 ] (NC) [ + ] (Anode) [ 2 ] [ 5 ] (COM) [ - ] (Cathode) [ 3 ] [ 6 ] (NO) ``` ---