Digital monitoring relay asymmetry 0-20% switchable phase sequence phase failure 3 x 160 to 690 V AC 50 to 60Hz undervoltage 160-690 V hysteresis 1-20 V switch-on and switch-off delay 0-20 s 2 changeover contacts spring-loaded technology Digitally adjustable mains monitoring relay SIRIUS 3UG4 for monitoring phase sequence, failure and 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 over-, under- 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 diagnosis through display of actual value and type of network 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 connections. 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 standardized for all relays.SIRIUS relays - a program for all occasions.
| Property | Value |
| Min. adjustable response delay time: | 0.1 s |
| Max. permissible release delay time: | 20 s |
| Number of contacts as changeover contacts: | 2 |
| Min. adjustable release delay time: | 0.1 s |
| Max. permissible response delay time: | 20 s |
| Width: | 22.5 mm |
| Height: | 94 mm |
| Depth: | 91 mm |
| Overvoltage detection function: | no |
| Rated control supply voltage Us at AC 50 Hz: | 160 to 690 V |
| With removable terminals: | yes |
| Phase sequence monitoring function: | yes |
| Phase failure detection function: | yes |
| Undervoltage detection function: | yes |
| Asymmetry detection function: | yes |
| Voltage measuring range: | 160 to 690 V |
| Rated control supply voltage Us at AC 60 Hz: | 160 to 690 V |
