The **YB226CWCKW01-5D-JS** is a high-quality, industrial-grade illuminated pushbutton switch manufactured by **NKK Switches**. This specific part number belongs to the YB2 Series and features a tamper-resistant, flush-mount design. ### 1. Part Number Breakdown To understand the electronic and mechanical characteristics, we can decode the nomenclature: | Component Code | Meaning | Specifications | | :--- | :--- | :--- | | **YB2** | Series Name | 22mm panel-mount pushbutton | | **26** | Circuitry | DPDT (Double Pole Double Throw) | | **CW** | Sealing/Style | Splashproof / Tamper Resistant | | **CK** | Mounting | Bushing mount, metallic bezel | | **W01** | Contact Rating | Silver Contacts (5A @ 125/250V AC) | | **5D** | Illumination Color | Amber LED (2-Volt typical) | | **JS** | Cap Type | Rectangular, Clear lens with Yellow insert | --- ### 2. Electrical Specifications The switch is designed for power-rated applications, capable of handling significant AC/DC loads. * **Contact Rating:** * 5A @ 125V AC * 3A @ 250V AC * 3A @ 30V DC * **Circuit Configuration:** DPDT (On-On). This means it has two sets of contacts that switch simultaneously between two positions. * **Contact Resistance:** 50 milliohms maximum. * **Insulation Resistance:** 200 Megohms minimum @ 500V DC. * **Dielectric Strength:** 1,000V AC minimum between contacts for at least one minute. --- ### 3. LED Characteristics (5D - Amber) The LED is a separate circuit from the switch contacts, allowing it to be wired for different logic (e.g., "Always On" or "On when Pressed"). | Parameter | Specification | | :--- | :--- | | **LED Color** | Amber | | **Forward Voltage ($V_f$)** | 2.0V DC (Typical) | | **Forward Current ($I_f$)** | 20mA | | **Polarity** | Polarized (Cathode/Anode marked on housing) | > **Note:** Since the LED operates at ~2V, a current-limiting resistor is required if you are using a 12V or 24V power supply to prevent burning out the LED. --- ### 4. Mechanical & Environmental Features * **Actuation:** Momentary (the switch returns to its original position after being released). * **Panel Cutout:** 22mm diameter. * **Ingress Protection:** Rated **IP65** (Dust-tight and protected against water jets), making it suitable for harsh environments. * **Terminals:** Solder lug / Quick connect terminals.