Siemens AG Monitor - Relay Output 3UG46172CR20

The 3UG4617-2CR20 is a digital 3-phase voltage monitoring relay for AC supply voltages from 160 to 690 V at 50 or 60 Hz, detecting undervoltage, overvoltage, phase failure, phase sequence, and voltage asymmetry. It has two changeover (CO) relay contacts for phase correction and fault signaling, with adjustable delay times from 0.1 to 20 s and hysteresis from 1 to 20 V. The relay uses spring-type terminals for conductor cross-sections of 0.25 to 1.5 mm² and is mounted via snap-on installation. It measures 94 mm high, 22.5 mm wide, and 91 mm deep, with IP20 protection. Output contacts carry 3 A at 250 V AC and 1 A at 24 V DC. Operating temperature ranges from -25 to +60 °C. Galvanic isolation is provided between input, output, and supply circuits. The device meets IEC 60664 for insulation up to 690 V and IEC 61000-4 for electromagnetic compatibility.