The **M2ADS-112-R** is a specific model within the series of Miniature Power Relays, typically manufactured by companies like **Goodsky** (a subsidiary of ECE). It is a high-performance, compact electromagnetic switch used to control high-power circuits with a low-power signal. --- ### 1. Technical Specifications Below are the primary electronic characteristics of the M2ADS-112-R: | Feature | Specification | | :--- | :--- | | **Coil Voltage** | 12V DC | | **Contact Form** | SPST-NO (1 Form A) | | **Contact Material** | AgSnO2 (Silver Tin Oxide) | | **Max Switching Current** | 12A | | **Max Switching Voltage** | 250V AC / 30V DC | | **Coil Power Consumption** | Approx. 200mW (Sensitive Type) | | **Dielectric Strength** | 4,000V AC (between coil and contact) | | **Termination Style** | PCB Mount (Through-Hole) | --- ### 2. Key Internal Components The relay consists of four main electronic/mechanical parts: 1. **The Coil (Electromagnet):** A copper wire winding around an iron core. When 12V DC is applied, it creates a magnetic field. 2. **The Armature:** A moving lever that responds to the magnetic field created by the coil. 3. **Spring Mechanism:** Ensures the contacts return to their original position (Open) once power is removed from the coil. 4. **Contacts:** The "switch" points. In this model, they are usually made of Silver Tin Oxide to resist "welding" and electrical erosion during high-current switching. --- ### 3. Part Number Breakdown Understanding the nomenclature helps identify its specific electronic behavior: * **M2A:** Series designation (Miniature Power Relay). * **D:** Sealed Type (Wash tight, protected against environment). * **S:** High Sensitivity (lower power required to trigger the coil). * **112:** "1" indicates the number of poles; "12" indicates the **12V DC** coil rating. * **R:** Specific contact material or RoHS compliance designation (standard for modern components). --- ### 4. Applications Because of its small footprint and 12A switching capacity, the M2ADS-112-R is commonly found in: * **Home Appliances:** Microwave ovens, dishwashers, and HVAC controllers. * **Industrial Controls:** PLC output modules and timers. * **Automotive Electronics:** Power windows or lighting control modules.