The **W2SP-2CC-R/UL** is a high-performance **Electromagnetic Relay** (often categorized under Power Relays) manufactured by **World Components (WTC)**. This specific part is designed for industrial automation, PCB mounting, and power switching applications. --- ## 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Feature | Specification | Details | | :--- | :--- | :--- | | **Contact Form** | 2C (DPDT) | Double Pole Double Throw (2 Changeover contacts) | | **Mounting Type** | PCB Mount | Designed for through-hole soldering on circuit boards | | **Contact Material** | Silver Alloy | Typically AgNi or AgSnO2 for arc resistance | | **Coil Voltage** | Varies (e.g., 12VDC, 24VDC) | Depends on the specific sub-model suffix | | **Max Switching Current** | 5A to 10A | Varies based on load type (Resistive vs. Inductive) | | **Safety Approval** | UL/cUL Recognized | Meets North American safety standards | --- ## 2. Key Components and Construction The internal "electronic parts" of this relay consist of several mechanical and electrical elements: ### A. The Coil System * **Copper Winding:** A fine copper wire coil that creates an electromagnetic field when energized. * **Iron Core:** Concentrates the magnetic flux to move the armature. ### B. The Contact System * **Stationary Contacts:** Fixed points connected to the output terminals. * **Movable Armature:** A spring-loaded metal piece that toggles between the Normally Closed (NC) and Normally Open (NO) positions. * **Bifurcated Design:** Often used in this series to ensure high contact reliability even at low signal levels. ### C. Insulation & Housing * **PBT/Polycarbonate Case:** Provides heat resistance and electrical isolation. * **Sealing:** Usually "R" (Flux Tight) or "S" (Sealed), allowing the part to withstand wave soldering and cleaning processes. --- ## 3. Application Use-Cases Because of its **DPDT (2 Form C)** configuration, it is commonly used for: 1. **Motor Reversing:** Switching the polarity of small DC motors. 2. **Signal Routing:** Switching between two different audio or data paths. 3. **Safety Interlocks:** Ensuring one circuit is OFF when the other is ON. 4. **PLC Outputs:** Acting as an interface between low-power controllers and high-power loads. --- ## 4. Part Number Breakdown * **W2SP:** Series designation (Miniature Power Relay). * **2C:** Number of poles (2 Changeover). * **C:** Dust-protected/Shielded type. * **R:** RoHS Compliant / High-capacity version. * **UL:** Underwriters Laboratories certified.