The 600VPR-310/520 Voltage Protection Relay is a reliable three-phase, three-wire monitoring device designed to protect electrical systems from voltage fluctuations and phase faults. It continuously monitors under-voltage, over-voltage, phase sequence, and phase failure conditions to ensure equipment safety and performance. The unit features a trip delay adjustable from 0.2 to 10 seconds, automatic reset once the fault is cleared, and clear LED indicators for power and relay status. Built with a slim, space-saving DIN rail mount design, it offers easy installation in control panels. The device operates with high precision, maintaining a trip voltage accuracy of ±0.5% and trip time accuracy of ±5%. It supports a nominal input voltage of 415V AC with an operating range from 310V to 520V AC and a maximum power consumption of 20VA. The relay output provides a single SPDT contact rated at 5A (NO) and 3A (NC) at 250V AC. Designed for industrial reliability, it performs efficiently within an operating temperature range of 0°C to 50°C and can withstand up to 95% non-condensing humidity. With a robust build, IP20 protection, and compliance with international standards including IEC 61326-1 and IEC 61010-1, the 600VPR-310/520 ensures dependable voltage monitoring and protection for motors, control panels, and electrical systems.