Siemens AG Monitor - Relay Output 3UG4631-1AA30

The 3UG4631-1AA30 is a digital voltage monitoring relay for AC/DC voltages from 0.1 to 60 V, powered by 24 V AC/DC. It has a single change-over contact, an LCD display, and adjustable response delays from 0.1 to 20 seconds. It detects undervoltage and overvoltage in single-phase and DC systems. The device measures 22.5 mm wide, 92 mm high, and 91 mm deep, with snap-on mounting and screw terminals for 0.5 to 4 mm² solid or 0.5 to 2.5 mm² stranded conductors. It offers galvanic isolation between input and output, operates from -25 to +60 °C, and withstands 4 kV surge voltage. It is rated for 100,000 electrical switching cycles at AC-15 and 10 million mechanical cycles. The relay complies with IEC 61000-4-2, IEC 61000-4-4, and IEC 61000-4-5 for electromagnetic compatibility.