Monitoring relay for phase failure, phase sequence, and asymmetry monitoring 3x 160-690 V AC, 15-70 Hz, 1 changeover contact with spring terminal connection. The SIRIUS 3UG5 network monitoring relay is designed to monitor phase sequence, failure, and asymmetry, for example, in mobile applications 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 international certifications. The compact design requires less space in the control cabinet thanks to its narrow width. All versions come with removable connection terminals. In addition to screw connection technology, the devices are also available with spring terminal connections for quick, maintenance-free, and vibration-resistant connections. Variants with a wide voltage range that do not require auxiliary voltage can be used in all networks worldwide. Additionally, devices with SIL 1/PL c certification are available. The comprehensive accessories, such as device labeling plates, replacement terminals, and sealing covers, are uniform for all relays. The 3UG5 network monitoring relays replace the proven 3UG4 series. SIRIUS relays - a program for all applications.