The **M2AS1-4141-R2/N** is a specific part number belonging to a series of **Automotive Relays**, typically manufactured by companies like **Song Chuan** (or similar manufacturers in the automotive electronic component sector). These relays are designed for high-reliability switching in vehicle environments. --- ### 1. General Specifications Below is a breakdown of the typical technical characteristics for this specific model: | Parameter | Specification | | :--- | :--- | | **Relay Type** | Mini ISO Automotive Relay | | **Coil Voltage** | 12V DC (Standard) | | **Contact Arrangement** | 1 Form C (SPDT - Single Pole Double Throw) | | **Contact Material** | Silver Alloy (often AgSnO2) | | **Current Rating** | 40A (Normally Open) / 30A (Normally Closed) | | **Enclosure** | Flux Tight / Plastic Sealed (Weather resistant) | | **Mounting Style** | Plug-in / PCB Terminals (Standard ISO footprint) | --- ### 2. Part Number Breakdown The nomenclature "4141-R2/N" provides specific details about the internal circuitry: * **M2AS1**: The series designation (Micro/Mini Automotive Series). * **4141**: Refers to the contact configuration and terminal type (1 Form C, Plug-in). * **R2**: This suffix usually indicates an **Internal Resistor** connected in parallel with the coil. This is used for **Suppression** to protect the vehicle's ECU from voltage spikes (back-EMF) when the relay is turned off. * **N**: Often signifies the specific housing material or a "No-bracket" version depending on the specific manufacturer catalog. --- ### 3. Electronic Features * **Coil Suppression:** The "R2" designation is critical. Without a resistor or diode, a collapsing magnetic field in the coil can send a high-voltage spike back into the circuit. The integrated resistor dissipates this energy. * **High Current Handling:** Designed to switch high-power loads like headlights, cooling fans, fuel pumps, and horn circuits. * **Durability:** Built to withstand high temperatures (-40°C to +125°C) and mechanical vibrations common in engine compartments. --- ### 4. Typical Applications This relay is commonly used in the following automotive systems: 1. **Engine Cooling Fans:** Managing high-current DC motors. 2. **Fuel Pump Control:** Ensuring reliable power delivery to the pump. 3. **Lighting Systems:** Switching high-beam or fog light circuits. 4. **Blower Motors:** Controlling HVAC fan speeds.