Digital monitoring relay current monitoring, 22.5 mm from 2-500 mA AC/DC overshoot and undershoot AC/DC 24 to 240 V DC and AC 50 to 60 Hz start-up and interference peak delay 0, 1 to 20 s hysteresis 0.1 to 250 mA 1 changeover contact with or without error memory screw connection successor product for 3UG3521-1AL20, 3UG3521-1AG20 and 3UG3521-1AC48-0AA1 Digitally adjustable current monitoring relay SIRIUS 3UG4 for monitoring currents for overshoot and undershoot, e.g. to ensure the functionality of electrical consumers or for wire break monitoring. Validated for worldwide use by international standards. The relay can be variably set to overshoot, undershoot 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 status messages. 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.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 |
| Number of contacts as changeover contacts: | 1 |
| Max. permissible response delay time: | 20 s |
| Min. adjustable response delay time: | 0.1 s |
| Max. permissible release delay time: | 20 s |
| Min. adjustable release delay time: | 0.1 s |
| Width: | 22.5 mm |
| Height: | 92 mm |
| Depth: | 91 mm |
| 1-phase undercurrent possible: | yes |
| 3-phase undercurrent possible: | no |
| 1-phase overcurrent possible: | yes |
| 3-phase overcurrent possible: | no |
| 1-phase window possible: | no |
| 3-phase window possible: | no |
| Includes DC voltage undercurrent function: | yes |
| Includes DC voltage overcurrent function: | yes |
| DC window function: | yes |
| Current measuring range: | 0.003 to 0.6 A |
| Rated control supply voltage Us at AC 50 Hz: | 20.4 to 264 V |
| Rated control supply voltage Us at AC 60 Hz: | 20.4 to 264 V |
| Rated control supply voltage Us at DC: | 20.4 to 264 V |
