Siemens SIEM mains monitoring relay

Monitoring relay phase sequence monitoring 3x 160-690 V AC, 15-70 Hz, 2 changeover contacts screw connection. Network monitoring relay with fixed function SIRIUS 3UG5 for monitoring phase sequence, failure, and asymmetry, e.g., for mobile installations such as air conditioning compressors, refrigerated containers, construction site compressors, cranes, or solar and wind power plants. Worldwide use due to international certifications. Reduced space requirement in the control cabinet thanks to a narrow design width. All versions come with removable connection terminals. In addition to screw connection technology, the devices are also available with spring-loaded terminals 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 labeling plates, 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.