The **SVB-A0-R/Q** is a specific part number typically associated with **Safety Interlock Switches** or **Emergency Stop (E-Stop)** control components, often manufactured by companies like IDEC or similar industrial automation providers. --- ### 1. General Specifications This part is a modular component designed for industrial safety circuits. Below is a breakdown of its primary electronic and physical characteristics: | Feature | Specification | | :--- | :--- | | **Component Type** | Safety Command Switch / E-Stop Base | | **Contact Configuration** | 2NC (Normally Closed) + 1NO (Normally Open) | | **Illumination** | Non-Illuminated (Standard) | | **Mounting Size** | 16mm or 22mm (Model specific) | | **Protection Rating** | IP65 / IP66 (Dust and Water resistant) | | **Terminal Type** | Solder / Tab terminals or PC Board pins | --- ### 2. Breakdown of the Part Number (Nomenclature) Industrial parts use alphanumeric codes to define specific features. For the **SVB-A0-R/Q** series: * **SVB**: Refers to the series type (often the "X6" or "XA" series sub-family for safety). * **A0**: Indicates the contact block structure (Direct Opening Action). * **R**: Typically stands for **Red** (the color of the actuator/button). * **Q**: Often denotes a specific terminal type (Quick-connect) or a regional safety certification standard. --- ### 3. Key Electronic Functions * **Positive Action (Force Opening):** The "A0" configuration ensures that if the contacts weld together, the physical force of pressing the button is enough to break the circuit, ensuring safety. * **Redundancy:** By using multiple NC (Normally Closed) contacts, the electronic system can verify the state of the switch across two separate channels to prevent a single point of failure. * **Low Contact Resistance:** Designed for low-voltage safety logic circuits (typically 24V DC), ensuring high signal integrity for PLCs or Safety Relays. --- ### 4. Typical Connection Diagram In a standard safety integration, the wiring follows this logic: ```mermaid graph LR A[Power Supply 24V] --> B[NC Contact 1 - Pin 1-2] B --> C[Safety Relay Channel A] A --> D[NC Contact 2 - Pin 3-4] D --> E[Safety Relay Channel B] F[NO Contact - Pin 5-6] --> G[PLC Status Input/Indicator] ``` ---