The Siemens 3RV2011-0HA40 is a SIRIUS motor protection circuit breaker in the compact Size S00 frame. It is designed to protect motor feeders against overload and short-circuit, with a Trip Class 10 characteristic that matches standard induction motor starting curves — meaning it will hold through a normal start but trip before the motor windings overheat during a stall or locked-rotor condition. Rated for operational voltages from 20 V to 690 V AC, this breaker delivers a 100 kA breaking capacity at 400 V AC and 690 V AC — sufficient for most industrial distribution panels with high fault current potential. The phase failure detection ensures the motor drops out on a lost phase, preventing single-phasing damage. Mounting is straightforward: screw-fixed or snap-on onto 35 mm standard mounting rail per DIN EN 60715. The 45 mm width and 97 mm depth mean it fits a standard 45 mm module slot on the rail. Clearance requirements are 50 mm upwards and downwards, 30 mm to the side, and zero forwards/backwards — so it can be packed tight against the back panel or enclosure door.
Breaking capacity and selectivity
The 100 kA breaking capacity at 400 V AC and 690 V AC is the headline number for panel coordination. For a feeder with a transformer impedance giving 50 kA available fault current, this breaker clears without needing an upstream current-limiting fuse — it's self-protecting at that level. The gL/gG backup fuse rating of 6 A at 690 V is only relevant if you need to coordinate with a specific upstream fuse for selectivity; otherwise the breaker's own interrupting rating covers the fault.
Environmental and installation notes
Operating temperature range is -20 to +60 °C with temperature compensation active across that same span, so the thermal trip curve stays accurate even in a warm cabinet near a drive or transformer. Storage and transport range extends to -50 to +80 °C. Mounting position is any, which helps when panel layout forces a horizontal or inverted orientation — just verify the clearance distances are maintained. Main circuit connections use ring cable lugs with M3 screws. The screwdriver shaft should be 5 to 6 mm diameter, tip size 2 or Pozidriv 2. For control wiring, the auxiliary contact block (if fitted) shares the same terminal size. Strip length for ring lugs is not specified here, but standard practice for M3 is 6-7 mm stripped before crimping.