The **YB215CWCKW01-05-EB** is a specific part number for a high-quality, illuminated pushbutton switch manufactured by **NKK Switches**. This part belongs to the YB Series, which is known for its modularity and robust environmental sealing. --- ### Technical Specifications Breakdown The part number is a coded string where each segment represents a specific physical or electrical characteristic. | Code Segment | Feature Category | Description | |:---|:---|:---| | **YB** | Series | Compact, modular pushbuttons (15mm size). | | **2** | Circuitry | **DPDT** (Double Pole, Double Throw). | | **15** | Function | **Momentary** (On) operation (springs back when released). | | **CW** | Sealing/Shape | **Circular** face with a **Water-Tight** (IP65) seal. | | **CK** | Terminals | Silver contacts with **Solder Lug** terminals. | | **W01** | Rating | High capacity: **3A @ 125V AC** or **3A @ 250V AC**. | | **05** | Illumination | **5V DC** Incandescent lamp (integrated). | | **EB** | Cap/Color | **Yellow** cap with a **Yellow** filter. | --- ### Key Electronic Components #### 1. Switching Mechanism (DPDT) The Double Pole, Double Throw configuration allows the switch to control two separate electrical circuits simultaneously. This is often used for: * Redundancy (safety). * Switching both power and a signal/indicator light at once. #### 2. Illumination (Incandescent Lamp) Unlike many modern switches that use LEDs, this specific model (code "05") uses a **5V Incandescent lamp**. * **Voltage:** 5 Volts DC. * **Characteristics:** Provides a warm, consistent glow across the yellow cap. * **Maintenance:** These lamps are generally replaceable within the YB series housing. #### 3. Contact Ratings & Materials * **Materials:** Silver contacts are used to handle higher current loads compared to gold-plated contacts. * **Electrical Life:** Rated for approximately 50,000 operations at full load. * **Mechanical Life:** Rated for 1,000,000 operations. --- ### Physical and Environmental Attributes * **Ingress Protection:** Rated **IP65** (Dust-tight and protected against water jets), making it suitable for industrial control panels or outdoor-facing equipment. * **Mounting:** Designed for panel mounting with a standard 16mm (0.630") hole diameter. * **Tactile Feedback:** Provides a distinct "click" or snap-action feel to confirm actuation to the user. ---