Digital monitoring relay for 3-phase voltage with N conductor automatic phase sequence correction phase failure 3 x 90 to 400 V AC 50 to 60 Hz undervoltage and overvoltage 90-400 V hysteresis 1-20 V switch-off delay 0-20 s asymmetry 0-20% 1 W for phase correction 1 W for mains error screw connection Digitally adjustable mains monitoring relay SIRIUS 3UG4 for monitoring phase sequence, phase failure and phase asymmetry as well as undervoltage and overvoltage, e.g. in unstable networks or mobile systems such as air conditioning compressors, refrigerated containers, construction site compressors or cranes. Worldwide use thanks to wide voltage supply and internationally validated. The relay can be variably set to overvoltage, undervoltage or window monitoring. Delay times and RESET behavior can be freely parameterized. Less space required in the control cabinet thanks to a narrow width. Reliable diagnostics through display of actual value and type of mains error. All versions with removable connection terminals.In addition to screw connection technology, the devices are also available with spring-loaded connections for quick, maintenance-free and vibration-proof connection. They are also available in different voltages, optionally with IO-Link or with automatic direction of rotation correction.The comprehensive range of accessories, such as device identification plates, push-in tabs and cover caps, is standard for all relays.SIRIUS relays - a program for all occasions.
