Insulation monitoring relay for ungrounded (IT) networks up to 400 V AC, 50-60 Hz measuring range 1-100 kOhm supply voltage AC/DC 24-240V 22.5 mm, 1 changeover contact screw connection Analog adjustable insulation monitoring relay SIRIUS 3UG4 for monitoring ungrounded (IT) networks for insulation faults, e.g. in systems with high availability requirements (chemical industry, automotive engineering, printing works), in the shipping and rail sector or in emergency power supplies. Worldwide use thanks to wide voltage supply and internationally validated. New predictive measuring principle enables the fastest response times. The relay enables permanent self-monitoring and manual testing options. Reliable system diagnostics thanks to clear error messages and switchable error memory.In addition to devices for monitoring the insulation of ungrounded AC voltage networks, devices for monitoring ungrounded DC and AC voltage networks are also available, each with screw and spring-loaded connections.SIRIUS Relay - a program for all situations.
| Property | Value |
| Number of contacts as changeover contacts: | 1 |
| Rated frequency: | 15 to 400 Hz |
| Width: | 22.5 mm |
| Height: | 78 mm |
| Depth: | 100 mm |
| With removable terminals: | no |
| Function: | for three-phase networks |
| Insulation value display: | no |
| Fault storage possible: | yes |
| Rated control supply voltage Us at AC 50 Hz: | 24 to 240 V |
| Rated control supply voltage Us at AC 60 Hz: | 24 to 240 V |
| Rated control supply voltage Us at DC: | 24 to 240 V |
