The **RG1-112S-R15** is a specific model of a **Miniature Intermediate Power Relay**, typically manufactured by brands like **Goodsky** (a subsidiary of ECE). It is widely used in industrial control, home appliances, and HVAC systems due to its compact size and high switching capacity. Below is a detailed breakdown of its electronic parts and technical specifications. --- ### 1. General Specifications This relay is designed for PCB mounting and features a standard footprint. | Feature | Specification | | :--- | :--- | | **Relay Type** | Electromechanical Relay | | **Contact Form** | SPDT (1 Form C) - Single Pole Double Throw | | **Coil Voltage** | 12V DC | | **Switching Current** | 12A to 15A (Load dependent) | | **Mounting Type** | Through-Hole (PCB) | | **Construction** | Flux Tight (Standard) or Sealed | --- ### 2. Internal Electronic Components The RG1-112S-R15 consists of four primary internal assemblies: #### A. The Coil (Actuator) * **Part:** Copper wire wound around a core. * **Function:** When 12V DC is applied, it creates a magnetic field. * **Characteristic:** The "112" in the part number signifies **12V DC**. The coil typically consumes about 400mW of power. #### B. The Contacts (Switching Element) * **Material:** Usually Silver Alloy (AgSnO2 or AgNi). * **Function:** The physical points that open or close the circuit. * **Rating:** Rated for high inrush currents, making it suitable for motor or capacitive loads. #### C. The Armature & Spring * **Part:** A moving metal piece held by a return spring. * **Function:** The magnetic field pulls the armature to toggle the contacts; the spring pulls it back when power is removed. #### D. The Housing (Casing) * **Material:** High-temperature plastic (UL 94V-0 rated). * **Function:** Provides electrical insulation and protection from the environment. --- ### 3. Decoding the Part Number The alphanumeric code provides specific details about the component's build: | Code Segment | Meaning | | :--- | :--- | | **RG1** | Series designation (Miniature Power Relay) | | **1** | Number of Poles (1 Pole) | | **12** | Coil Voltage (12 Volts DC) | | **S** | Sealing Type (S: Sealed/Wash Tight) | | **R15** | Contact Rating/Version (Refers to 15A switching capability) | --- ### 4. Technical Performance * **Contact Resistance:** Max 100mΩ (initial). * **Operate Time:** Max 15ms (The time it takes to close the circuit). * **Release Time:** Max 5ms (The time it takes to open the circuit). * **Dielectric Strength:** 5,000V AC between coil and contacts (provides excellent isolation). ---