Siemens SIEM mains monitoring relay

Digital adjustable monitoring relay for phase failure, phase sequence, asymmetry, frequency, over- and undervoltage monitoring with phase sequence correction 3x 90-690 V AC, 15-70 Hz, 2 changeover screw terminals SIL 1/PL c. The digital adjustable network monitoring relay SIRIUS 3UG5 monitors phase sequence, failure, and asymmetry, undervoltage and overvoltage, as well as frequency, for example, in unstable networks or mobile installations such as air conditioning compressors, refrigerated containers, construction site compressors, cranes, or solar and wind power plants. It is suitable for worldwide use due to its wide voltage supply and international certifications. The relay can be variably set for over, under, or window monitoring. Delay times and RESET behavior are freely parameterizable. It requires less space in the control cabinet thanks to its narrow width. Reliable diagnostics are provided through the display of actual values and types of network faults. All versions feature removable terminal blocks. In addition to screw connection technology, the devices are also continuously available with spring-loaded connections for quick, maintenance-free, and vibration-resistant connections. An automatic rotation direction correction is available upon request. For communication connectivity, a variant with IO-Link is available. Additionally, devices with SIL 1/PL c certification are available. The comprehensive accessories, such as device identification labels, replacement terminals, and sealing covers, are uniform for all relays. The network monitoring relays 3UG5 replace the proven series 3UG4. SIRIUS relays - a program for all cases.