The **W2CE-11D-R2/UL** is a specific model of a **Compact Power Relay**, typically manufactured by companies like Omron (specifically the G2R or G6B series derivatives, though the W2CE prefix is often used in specialized industrial sourcing). Below is the detailed breakdown of its electronic components and technical specifications. --- ### 1. General Overview The W2CE-11D-R2/UL is an electromechanical relay designed for PCB mounting. It functions as an electrically operated switch, using an electromagnet to mechanically operate a set of contacts. ### 2. Technical Specifications | Feature | Specification | Description | | :--- | :--- | :--- | | **Contact Form** | SPDT (1 Form C) | Single Pole Double Throw (Changeover) | | **Coil Voltage** | 12V DC or 24V DC | Standard operating voltage (check specific suffix) | | **Contact Rating** | 5A to 10A | Maximum current the contacts can handle at 250VAC | | **Mounting Type** | PCB Through-Hole | Designed to be soldered directly onto a circuit board | | **Safety Standard** | UL Recognized | Certified for safety in US/Canadian markets | | **Construction** | Sealed/Flux Protection | Prevents solder flux or dust from entering the mechanism | --- ### 3. Key Electronic Components A relay of this type consists of four primary internal parts: 1. **The Coil (Electromagnet):** A copper wire wound around an iron core. When current flows through it, it creates a magnetic field. 2. **The Armature:** A moving part that is attracted by the magnetic field of the coil. 3. **Spring:** Returns the armature to its original position when the current to the coil is cut off. 4. **Contacts:** The actual switching points. In a **1 Form C** configuration: * **Common (COM):** The moving contact. * **Normally Closed (NC):** Touches COM when the relay is OFF. * **Normally Open (NO):** Touches COM when the relay is ON. --- ### 4. Circuit Symbol and Operation In a schematic, the relay is represented by a coil symbol and a switch symbol. ```text Coil Terminals Contact Terminals (Input) (Output) ____ / ---|____|--- -----/ (NO) | -----O (COM) | ----- (NC) ``` ### 5. Application Areas * **Industrial Controls:** Interfacing between low-power logic (PLCs) and high-power loads. * **Home Appliances:** Switching heaters, motors, or fans. * **Power Supplies:** Used for inrush current protection or output selection. ---