It combines thermal overload protection with magnetic short-circuit protection in a single 45 mm wide package that snaps onto standard 35 mm DIN rail per DIN EN 60715. The Trip Class 10 rating means it trips within 10 seconds at 7.2× the thermal setting — fast enough to protect standard induction motors during locked-rotor conditions without nuisance tripping on normal starts.
Rated breaking capacity of 25 kA at 400 V AC and 100 kA at 240 V AC. At 690 V the capacity drops to 2 kA, so verify the available fault current if you're running a 690 V line.
Clearance requirements: 50 mm upward and downward, 30 mm at the side. Main contact terminals accept M4 screws; the control circuit terminals accept 2× (0.5 to 1.5 mm²) solid or stranded, or 2× (0.75 to 2.5 mm²) — strip length per standard practice.
The lifecycle stage is listed as current — meaning Siemens still lists this as an active catalog number with no announced end-of-life. That said, the SIRIUS 3RV2 series has been through several revision cycles, and while this code remains orderable, the supply chain for Siemens industrial components can tighten without notice.
Environmental and operational limits
Operates from -20 °C to +60 °C ambient; storage and transport range is -50 °C to +80 °C. Rated voltage range 20 to 690 V AC. No ground fault detection on this variant.