### Overview of the RXM2AB2JD The **RXM2AB2JD** is a high-performance **Miniature Intermediate Relay** belonging to the Schneider Electric *Zelio Relay* (Harmony) range. It is designed to act as an interface between PLC controllers (or other low-power control circuits) and higher-power electrical loads. --- ### Technical Specifications The following table highlights the core electronic and mechanical parameters of the device: | Feature | Specification | | :--- | :--- | | **Coil Voltage** | 12 V DC | | **Contact Configuration** | 2 C/O (DPDT - Double Pole Double Throw) | | **Thermal Current (Ith)** | 12 A at -40…55 °C | | **Control Type** | Lockable test button | | **Status LED** | Included (Indicates coil energization) | | **Mounting Type** | Plug-in (compatible with RXZE sockets) | | **Switching Voltage** | 250 V AC / 28 V DC | --- ### Key Electronic Components & Features #### 1. The Control Coil (12V DC) The "JD" suffix indicates a **12V DC** coil voltage. When current flows through this coil, it creates a magnetic field that moves the mechanical armature to switch the contact states. * **Average consumption:** ~0.9 W. * **Drop-out voltage threshold:** $\ge 0.1 Uc$ (1.2V DC). #### 2. Contact Material and Power The contacts are typically made of **Silver Alloy (AgNi)**. This provides a balance between conductivity and resistance to "pitting" or welding under electrical arcs. * **Maximum Switching Power:** 3000 VA (AC) / 336 W (DC). * **Minimum Switching Capacity:** 170 mW at 10 mA, 17 V. #### 3. Protection and Indicators * **LED Indicator:** A built-in green LED lights up when the coil is energized, allowing for quick visual troubleshooting. * **Mechanical Flag:** A physical indicator shows the position of the contacts. * **Test Button:** A manual lockable lever allows for testing the circuit without needing to energize the coil. --- ### Pin Configuration (Wiring) The RXM2AB2JD uses a standardized pin layout for plug-in sockets. 1. **Coil Terminals (A1, A2):** Used to apply the 12V DC control signal. 2. **Common Terminals (11, 21):** The input side of the switches. 3. **Normally Closed (12, 22):** Contacts that are closed when the relay is OFF. 4. **Normally Open (14, 24):** Contacts that close when the relay is ON. --- ### Environmental and Durability Limits * **Mechanical Durability:** 10,000,000 cycles. * **Electrical Durability:** 100,000 cycles for resistive loads. * **Operating Temperature:** -40°C to +55°C. * **Degree of Protection:** IP40.