SIRIUS 3RV2011-1FA10-ZW97 — Motor Protection Circuit Breaker for the Route
This is a Siemens SIRIUS motor protection circuit breaker (order code 3RV2011-1FA10-ZW97), designed specifically to protect motors from overloads and short circuits. It's a CLASS 10 trip device, meaning it will disconnect within 10 seconds at a cold start under a locked-rotor condition — that's the standard for standard induction motors driving pumps, fans, and conveyors out here in the grease. It snaps onto a standard 35 mm DIN rail (DIN EN 60715) and screws down solid — no floating around in the panel. At 45 mm wide and 97 mm deep, it fits a standard motor starter combo footprint alongside a contactor. The mounting position is any, which helps when you're shoehorning it into an existing enclosure. Breaking capacity is a solid 100 kA at 400 V and 500 V, and 4 kA at 690 V. That means it can safely interrupt a fault current up to those levels without welding its contacts shut or blowing apart — important when the line feeds a big motor bank downstream. It also includes phase failure detection, so if you lose a leg on a three-phase motor, this breaker will trip and save the winding from single-phasing.
Mounting and Wiring — Panel Builder's Checklist
Fastens via screw and snap-on onto 35 mm DIN rail per DIN EN 60715. Clearance: 50 mm upwards and downwards, 30 mm to the side, 0 mm forwards and backwards — so you can pack it tight front-to-back but need breathing room top and bottom for wiring and cooling. Main circuit terminals are M3 screw-type, accepting 2x (0.75 to 2.5 mm²) solid or stranded, or 2x 4 mm². Strip length isn't given here, but standard practice is 8–10 mm for this terminal class. Torque to the manufacturer's spec when you land the wires. Operating temperature range is -20 to +60 °C, storage and transport from -50 to +80 °C.
How It Compares — 3RV2011 vs 3RV2021
The closest functional peer is the 3RV2021-1FA15. Both are SIRIUS motor protection breakers with CLASS 10 trip, but the 3RV2021 frame is physically larger — typically 55 mm wide vs this 45 mm. That extra width usually comes with a higher continuous current rating and larger terminal capacity. If your panel was laid out for a 3RV2021, this 3RV2011 won't drop in without a DIN rail re-spacing and possibly a terminal adapter. For a direct swap without rewiring, stick with the same frame size.