Based on the part number **M2AS1-4244-R2/CE**, this component belongs to the **M2AS1 series** of industrial-grade relay modules, typically manufactured by companies like **Dold** or similar European automation component suppliers. Below is a breakdown of the electronic specifications and characteristics of this specific unit. --- ## 1. Technical Specifications | Parameter | Specification | | :--- | :--- | | **Product Category** | Relay Module / Interface Relay | | **Control Voltage** | 24V DC (Common for this series) | | **Contact Configuration** | 4 Changeover (CO) / SPDT contacts | | **Contact Rating** | Usually 6A to 8A at 250V AC | | **Mounting Type** | DIN Rail Mounting | | **Termination** | Screw Terminals | | **Safety Certification** | CE Marked (indicated by /CE suffix) | --- ## 2. Part Number Breakdown Understanding the nomenclature helps identify the specific features: * **M2AS1**: The base series designation (Standard housing width/type). * **4244**: This code typically defines the contact material and the specific internal wiring configuration (e.g., AgNi contacts for general-purpose switching). * **R2**: Refers to the revision or a specific variant involving the input circuit (often includes an integrated LED and protection diode). * **CE**: Confirms compliance with European Health, Safety, and Environmental protection standards. --- ## 3. Key Electronic Features ### Input Side (Coil) * **Polarity Protection**: Usually contains an integrated free-wheeling diode to protect against voltage spikes when the coil is de-energized. * **Status Indication**: Features a high-visibility LED to show the excitation state of the relay. ### Output Side (Contacts) * **Multi-Channel Switching**: Provides 4 independent sets of contacts, allowing one input signal to trigger four separate circuits. * **Low Contact Resistance**: Designed for high reliability in industrial control loops. ### Mechanical / Environmental * **IP Protection**: Usually rated IP20 for finger safety. * **Housing**: Flame-retardant plastic designed for high-density DIN rail clusters. --- ## 4. Typical Applications 1. **PLC Interfacing**: Isolating sensitive PLC outputs from high-voltage field actuators. 2. **Signal Multiplication**: Taking a single logic signal and branching it to multiple safety or feedback circuits. 3. **Galvanic Isolation**: Ensuring there is no electrical path between the control logic and the power load.