The **W2PP-122N-R** is a specific model within the series of high-performance **Water-Proof (IP67/IP68) Push Button Switches**. These components are widely used in industrial, automotive, and outdoor applications where environmental sealing and durability are critical. --- ### 1. Technical Specifications The following table outlines the primary electronic and mechanical characteristics of the W2PP-122N-R: | Feature | Specification | | :--- | :--- | | **Switch Function** | Off-(On) / Momentary | | **Contact Configuration** | SPST (Single Pole Single Throw) | | **Current Rating** | 400mA @ 32VAC / 100mA @ 50VDC | | **Dielectric Strength** | 1,000 VAC rms | | **Insulation Resistance** | 1 GΩ min. at 500VDC | | **Contact Resistance** | 50 mΩ max. (Initial) | | **Operating Temperature** | -30°C to +85°C | | **Ingress Protection** | IP67 (Dust tight, Waterproof) | --- ### 2. Key Electronic Components & Materials The reliability of the W2PP-122N-R is derived from its high-quality internal construction: * **Contacts:** Usually made of **Gold over Silver plating**. Gold prevents oxidation at low currents, while the silver base provides excellent conductivity. * **Terminal Type:** Solder terminals or PC terminals (depending on the specific "R" sub-variant), designed for secure electrical connection. * **Housing/Bezel:** Constructed from Polyamide (Nylon 6/6), providing high thermal resistance and electrical insulation. * **Sealing:** Includes an internal O-ring and a silicone boot (or epoxy seal at the base) to prevent moisture from reaching the electrical contacts. --- ### 3. Part Number Breakdown (W2PP Series) Understanding the nomenclature helps identify the specific electronic behavior: 1. **W2PP:** Series designation (Waterproof Push Button). 2. **1:** Number of poles (1 = Single Pole). 3. **22:** Circuit function (Typically signifies Momentary Normally Open). 4. **N:** Bushing/Actuator style (Non-illuminated or standard flat). 5. **R:** RoHS Compliance or specific packaging/terminal orientation. --- ### 4. Application Examples Because of its IP67 rating and momentary action, this part is ideal for: * **Reset Buttons:** For outdoor telecommunications equipment. * **Control Panels:** In maritime or heavy machinery environments. * **Medical Equipment:** Devices requiring frequent sanitization or exposure to liquids.