Siemens AG Monitor - Relay Output 3UG4512-1BR20

The 3UG4512-1BR20 is a phase failure and sequence monitoring relay for AC voltages from 160 to 690 V at 50/60 Hz, with two change-over contacts and screw terminals. It measures 22.5 mm wide, 92 mm high, and 91 mm deep, and mounts snap-on in any position. The relay detects phase loss and sequence, has LED indication, and an output rating of 3 A at 250 V AC. It operates with a control supply voltage of 160-690 V AC, has IP20 protection, and galvanic isolation between input, output, and supply. Thermal current is 5 A. Mechanical life is 10 million cycles, electrical endurance 100,000 cycles at AC-15. Operating temperature is -25 to +60 °C, with a maximum installation altitude of 2,000 m. It complies with IEC 60664 and IEC 61000-4-4/5/3 for interference immunity.