### RGC2A60..25 Electronic Specifications and Features The **RGC2A60..25** is a high-performance **3-phase Solid State Contactor (SSC)** (typically switching 2 of the 3 phases) designed for industrial automation and heating control. It is part of the RGC series by Carlo Gavazzi. --- ### 1. Key Technical Specifications The model name "RGC2A60D25KKE" (as an example) breaks down into specific electronic parameters: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Switching Type** | Zero Cross | Switches ON when voltage is near zero to reduce EMF. | | **Operational Voltage** | 42 - 600 VAC | Suitable for standard industrial power grids. | | **Rated Current** | 25 Amps AC | Rated at $40^\circ \text{C}$ (ambient temperature). | | **Number of Poles** | 2-Pole Switching | Switches 2 phases; the 3rd phase is a direct link. | | **Control Voltage** | 5-32 VDC or 20-275 VAC | Depends on the specific sub-model (D = DC, A = AC). | | **Peak Voltage** | 1200 Vp | Protection against transient voltage spikes. | --- ### 2. Internal Electronic Architecture The RGC2A60..25 utilizes specific semiconductor components to manage high-power loads: * **Thyristors (SCRs):** It uses back-to-back thyristors for each switching pole. This provides higher robustness compared to TRIACs, especially for inductive loads. * **Integrated Heat Sink:** The "RGC" designation indicates the heat sink is built-in, meaning the thermal management electronics are already optimized for the 25A rating. * **Overvoltage Protection:** Includes internal **Varistors (MOV)** to protect the internal thyristors from line surges. * **Isolation:** Features optical isolation between the low-voltage control input and the high-voltage load output (typically up to 4000 Vrms). --- ### 3. Connection and Terminal Layout The device uses a specific terminal configuration to ensure safe electronic installation: 1. **Input (Control):** Labeled as **A1 (+)** and **A2 (-)**. This is where the PLC or Temperature Controller sends the signal. 2. **Output (Load):** * **L1, L2, L3:** Incoming mains power. * **T1, T2, T3:** Outgoing power to the motor or heater. 3. **Status Indication:** A green LED on the front face provides visual feedback on the control input status. --- ### 4. Circuit Protection Requirements To protect the sensitive electronic thyristors inside the RGC2A60..25, the following external parts are recommended: * **High-Speed Fuses:** To prevent short-circuit damage, $I^2t$ rated semiconductor fuses must be used. * **RCCB:** Residual Current Circuit Breakers for ground fault protection. ---