The **WRPPB-A1ANN-R** is a specific part number typically associated with **Industrial Pushbutton Switches**, specifically from manufacturers like **Weller/Walsin** or similar industrial control component providers. Below is a breakdown of its electronic and mechanical specifications. --- ### 1. General Specifications This component is an **Illuminated Pushbutton Switch** designed for panel mounting in industrial control systems. | Feature | Specification | | :--- | :--- | | **Type** | Pushbutton Switch | | **Action** | Momentary (Non-locking) | | **Illumination** | Integrated LED | | **Mounting Size** | ~16mm to 22mm (Standard Panel Cutout) | | **Contact Form** | SPST or DPST (Depending on internal configuration) | | **Termination** | Solder Lug or Quick Connect terminals | --- ### 2. Breakdown of Part Number Components While naming conventions vary slightly by manufacturer, the code generally breaks down as follows: * **WR / PB**: Series prefix (Water-Resistant / Push Button). * **A1**: Size or Mounting style (often indicates a circular bezel). * **A**: Contact configuration (e.g., 1NO / 1NC). * **NN**: No specific custom engraving or standard marking. * **R**: **Red** color (Refers to either the LED light or the physical cap). --- ### 3. Electronic Characteristics To integrate this part into a circuit, the following electronic limits must be respected: #### **A. Contact Rating** * **AC Voltage:** Typically rated up to 250V AC at 3A to 5A. * **DC Voltage:** Typically rated for 12V or 24V DC. #### **B. LED Parameters** * **Forward Voltage:** Red LEDs usually operate at **1.8V to 2.2V**. * **Current:** Standard 20mA. * *Note: If the switch is rated for 12V/24V usage, it likely contains an internal current-limiting resistor.* #### **C. Environmental Protection** * **IP Rating:** Usually **IP65 or IP67**, making it resistant to dust and water splashes. * **Material:** Often features a stainless steel or chrome-plated brass body to prevent corrosion. --- ### 4. Typical Applications These switches are commonly found in: 1. **Industrial Control Panels:** As "Start" or "Emergency Reset" buttons. 2. **Medical Equipment:** Due to their durability and ease of cleaning. 3. **Kiosks and Vending:** Where rugged, vandal-resistant buttons are required. 4. **Custom Automotive/Marine Dashboards:** For lighting or pump controls.