Ensure reliable voltage monitoring and protection with this advanced Voltage Monitoring Relay, designed for precise performance and versatile applications. Featuring true RMS voltage measurement and eight adjustable rated voltage settings, this relay provides accurate monitoring with a voltage measurement error of less than 1%. Its compact design allows easy mounting on a standard 35mm DIN rail, making it ideal for efficient integration into various electrical control systems. Key Features: · True RMS Voltage Measurement: Accurately monitors the working voltage with high precision to protect your equipment effectively. · Eight Adjustable Rated Voltages: Customize the relay to fit your application needs with selectable rated voltages ranging from 127V to 265V (P-N). · High Voltage Measurement Accuracy: Ensures measurement error is within 1%, delivering reliable and stable monitoring performance. · LED Status Indicators: Green LED power indicator and red LED relay output indicator provide clear visual feedback of operational status. · Compact and Space-Saving Design: Super small volume with easy 35mm DIN rail mounting for convenient installation in limited spaces. · Comprehensive Protection Functions: Includes phase failure protection, phase sequence protection, undervoltage and overvoltage detection, and unbalanced voltage protection for dynamic load safety. · Adjustable Parameters: Features adjustable voltage threshold (2%-20%), action delay time (0.1-10s), and reset time (1s) to suit specific protection requirements. · Robust Relay Output: Equipped with a single-pole double-throw (SPDT) relay output, rated at 10A/250VAC or 24VDC, supporting switching of loads as low as 500mW. · Durable and Reliable: Designed for repeated operation with a mechanical life of 10 million cycles, ensuring long-lasting performance. Specifications: · Function: Monitor L-N voltage (3-phase 4-wire system) · Monitoring Terminal: L1-L2-L3-N · Power Supply: L1-N · Rated Working Voltage: 127-132-138-220-230-240-254-265 V (P-N) · Rated Power Frequency: 45Hz–65Hz · Measuring Range: 101V–318V · Voltage Threshold Range: 2%-20% (of rated voltage) · Voltage Fixed Lag Rate: 2% · Voltage Measurement Error: ≤1% · Power-On Delay Time: 0.5 seconds · Knob Setting Accuracy: ±10% · Reset Time: 1 second · Temperature Fluctuation Error: 0.05%/°C at 20°C · Output: 1 x SPDT relay, 10A/AC1, 250VAC/24VDC · Minimum Switching Power: 500mW · Overvoltage Protection: 2%-20% · Undervoltage Protection: -20%-2% · Unbalanced Voltage Protection: 8% · Action Delay Time: 0.1–10 seconds (adjustable) · Mounting Method: 35mm DIN rail · Mount Altitude: ≤2000m · Weight: Approx. 76g (2.7oz) Package Includes: · 1 x Voltage Monitoring Relay This Voltage Monitoring Relay is an essential component for equipment protection and control systems, ideal for tower cranes, elevators, agricultural machinery, refrigerated trucks, and power supply switching applications. Its high accuracy, compact size, and multiple safety functions provide robust protection against voltage irregularities and phase issues, helping to prolong equipment lifespan and maintain operational safety.