The **W2RS-3C1-R2** is a specific part number typically associated with **Industrial Interface Relays** (often manufactured by brands like **WAGO** or similar industrial electronics suppliers). This specific model is a slim-style relay module designed for signal isolation and switching in automation systems. --- ### 1. Key Technical Specifications The part number breaks down into specific electrical characteristics: | Feature | Specification | | :--- | :--- | | **Relay Type** | Electromechanical Interface Relay | | **Input Voltage (Coil)** | 24V DC (Standard for R2 series) | | **Contact Configuration** | 1 Changeover (SPDT - Single Pole Double Throw) | | **Max Switching Current** | 6A | | **Max Switching Voltage** | 250V AC / 30V DC | | **Mounting Style** | DIN-rail (TS 35) | | **Connection Technology** | Push-in or Screw CAGE CLAMP® | --- ### 2. Core Electronic Components The device is not just a mechanical switch; it contains several internal electronic parts to ensure safety and longevity: * **Electromagnetic Coil:** The actuator that creates a magnetic field when 24V DC is applied, pulling the contacts to close the circuit. * **AgSnO2 Contacts:** The internal switch is usually made of Silver Tin Oxide, which provides high arc resistance and prevents welding under load. * **Freewheeling Diode (Flyback Diode):** Integrated to suppress the inductive voltage spikes (back EMF) generated when the relay coil is de-energized, protecting the driving PLC or controller. * **LED Status Indicator:** A green or red LED positioned on the front to provide visual confirmation that the input circuit is energized. * **Isolation Barrier:** Provides physical and electrical separation (usually up to 4kV) between the low-voltage control side (PLC) and the high-voltage load side (Motors/Solenoids). --- ### 3. Application Use Cases The W2RS-3C1-R2 is primarily used in control cabinets for: 1. **Signal Doubling:** Taking one PLC output to trigger a higher-power device. 2. **Galvanic Isolation:** Protecting sensitive electronic controllers from electrical noise or surges on the field side. 3. **Voltage Level Conversion:** Using a 24V DC signal to switch a 230V AC motor or lamp. --- ### 4. Wiring Diagram Representation ```mermaid graph LR A[Input +24V] --> B((Coil)) C[Input 0V] --> B D[Common] --- E{Contact} E --> F[Normally Open] E --> G[Normally Closed] ```