Monitoring relay for phase sequence monitoring 3x 160-690 V AC, 15-70 Hz 1 changeover contact spring terminal connection. The SIRIUS 3UG5 network monitoring relay with fixed function is designed for monitoring phase sequence, failure, and asymmetry, for example, in mobile installations such as air conditioning compressors, refrigerated containers, construction site compressors, cranes, or solar and wind power plants. It can be used worldwide due to international certifications. It requires less space in the control cabinet thanks to its narrow design. All versions come with removable terminal blocks. In addition to screw connection technology, the devices are also available with spring terminal connections for a quick, maintenance-free, and vibration-resistant connection. Variants with a wide voltage range without 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 identification labels, 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 cases.