Phase Sequence Relay for Three-Phase Power Safety [Instant Fault Detection]

The phase loss protection relay from Yueqing Huilong safeguards three-phase electrical systems against catastrophic failures caused by phase loss or imbalance. This relay uses microprocessor-based detection technology to monitor phase voltages in real-time with ±1% accuracy, triggering an alarm or shutdown within 0.1 seconds of detecting a fault. It features adjustable trip settings for phase loss (1-5 seconds) and voltage unbalance (5-15%), allowing customization for different systems. The relay’s DIN rail-mount design (48mm width) fits easily in control panels, while LED indicators provide clear fault diagnosis. Constructed with flame-retardant materials (UL94 V-0), it withstands temperatures from -20℃ to +70℃ and meets IEC 60255 standards, making it essential for motors, pumps, and compressors in manufacturing plants.