The **F2VS-63-R/Q** is a high-performance, compact **Voltage and Current Protection Relay** (also known as a self-resetting over-under voltage protector). It is designed to safeguard electrical equipment from power surges, voltage drops, and overcurrent conditions in single-phase AC circuits. --- ### 🛠️ Key Technical Specifications | Parameter | Specification Details | | :--- | :--- | | **Rated Voltage** | 220V/230V AC (50/60Hz) | | **Max Current (Imax)** | 63A (Adjustable range usually 1A-63A) | | **Overvoltage Protection** | 230V ~ 300V (Default: 270V) | | **Undervoltage Protection** | 140V ~ 210V (Default: 170V) | | **Recovery Delay Time** | 1s ~ 500s (Default: 30s) | | **Installation** | 35mm DIN Rail Mount | --- ### 🧩 Electronic Components & Features The F2VS-63-R/Q consists of several critical electronic sub-systems that allow it to function as a "smart" circuit breaker: 1. **Microcontroller (MCU) Core:** Unlike traditional thermal breakers, this device uses a digital processor to sample incoming voltage and current in real-time. This allows for high precision and adjustable threshold settings. 2. **Dual LED Display:** * **Top Display:** Shows real-time **Voltage (V)**. * **Bottom Display:** Shows real-time **Current (A)**. * *Note: In some sub-models, the 'Q' suffix indicates additional measurement functions like kWh (Energy consumption).* 3. **Magnetic Latching Relay:** The internal switching mechanism is a heavy-duty relay capable of handling up to 63A. It disconnects the load physically when parameters exceed the safety limits. 4. **Auto-Reset Logic:** One of its primary "electronic" advantages is the automatic recovery feature. Once the power grid stabilizes for a set duration (Recovery Delay), the electronic logic triggers the relay to reconnect power without manual intervention. --- ### ⚠️ Protection Logic * **Overvoltage:** If $V > Set Point$, the device trips within < 0.1s to prevent PCB damage in connected appliances. * **Undervoltage:** If $V < Set Point$, the device trips to prevent motor burnout or brownout damage. * **Overcurrent:** If $I > Set Point$, the device trips to prevent wiring fires or short-circuit damage. --- ### 📝 Wiring Diagram Representation ```text [ LINE ] [ LOAD ] (L) ---- [ 1 ] [ 3 ] ---- (L) (N) ---- [ 2 ] [ 4 ] ---- (N) | | [ F2VS-63 ] ```