Samwha PMR-44 Phase Monitoring Relay is a high-voltage protective device that monitors a three-phase mains supply and delivers a control output when a phase fault is detected. It is rated for 240-480 VAC operation at 50/60 Hz, making it suitable for motor protection and interlock circuits in industrial equipment. The unit weighs approximately 1.0 lb, and the PMR-44 is listed as discontinued by the manufacturer, so remaining stock is typically found through distributors or refurbishers.
