Phase Monitoring Relay

Compact 3-phase protective relay designed to continuously monitor power supply quality and protect industrial motors and machinery from electrical faults. It operates by detecting phase sequence (reverse phase) and phase loss at power-on or during operation, automatically opening its output relay contacts to isolate downstream equipment when an anomaly occurs. Featuring a slim 17.5mm DIN-rail footprint, it prevents motor reversal, overheating, and phase-unbalance damage, ensuring safe and reliable operation in pump, HVAC, and industrial control systems.