3RB3 Electronic Overload RelayOverview
SIRIUS 3RU and 3RB overload relays
Tripping when things get tough:
The overload relays of the SIRIUS family, available as either thermal or solid-state versions, protect loads connected to the main circuit, as a function of the current, and also protect other switching and protective devices in the particular load feeder. The solid-state SIRIUS 3RB2 overload relays guarantee seamless motor and plant protection from 0.1 A to 630 A. Due to the wide set-ting ranges, the current range is covered with a minimum number of versions.
- SIRIUS Modular Systems Brochure (13.52MB)
- Configuring SIRIUS Innovations - Selection data for Fuseless and Fused Load Feeders (2.54MB)