Siemens AG Monitor - Relay Output 3UG46182CR20

The 3UG4618-2CR20 is a digital monitoring relay for three-phase AC voltage, providing undervoltage, overvoltage, phase failure, phase sequence, and asymmetry detection with automatic phase correction. It operates from 90 to 400 V AC at 50 to 60 Hz with a spring-type connection system and snap-on mounting. The device features two changeover contacts for phase correction and line supply fault signaling, with a thermal current rating of 5 A and output relay ratings of 3 A at 250 V AC and 1 A at 24 V DC. Its dimensions are 103 mm in height, 22.5 mm in width, and 91 mm in depth. The relay meets IP20 protection, operates from -25 to +60 °C, and has an insulation voltage of 690 V for overvoltage category III. Galvanic isolation is provided between input, output, and supply circuits.