Siemens - Fasebewakingsrelais Siem 3Ug55121Ar20 - 3UG55121AR20

monitoring relay phase failure, phase sequence and asymmetry monitoring 3x 160-690 V AC, 15-70 Hz 1 changeover contact screw terminal for monitoring phase sequence, phase failure and phase asymmetry, e. g. with mobile systems such as A/C compressors, refrigerated containers, construction site compressors, cranes or photovoltaic systems and wind turbines Worldwide use thanks to international certificates. Less space required in the control cabinet thanks to slim design. All versions with removable terminals. In addition to screw terminals, all the devices are also available with spring-loaded terminals for fast, maintenance-free and vibration-proof connection. Versions with a wide voltage range and without auxiliary voltage can be used in any networks worldwide. In addition, devices with SIL 1/PL c certification are available.