Analog monitoring relay for phase loss and sequence, 3 x 160...690 V AC, 50...60 Hz, 1 changeover contact. The SIRIUS 3UG4 network monitoring relay with fixed function is designed to monitor phase sequence, loss, and asymmetry, for example, in mobile applications such as air conditioning compressors, refrigerated containers, construction site compressors, or cranes. It is globally applicable due to international certifications. Different variants allow for application-specific product selection. The reduced space requirement in the control cabinet is achieved through a narrow design width. All versions feature removable connection terminals. In addition to screw connection technology, the devices are also available with spring-loaded terminals for quick, maintenance-free, and vibration-resistant connections. Variants with a wide voltage range without auxiliary voltage can be used in all networks worldwide. The comprehensive accessories, such as device identification labels, insertion tabs, and cover caps, are uniform for all relays. SIRIUS relays - a program for all cases.