What the ratings mean for fit
The Siemens 3RV2011-1CA10-0BA0 is a SIRIUS motor protection circuit breaker in size S00, designed for motor protection with Trip Class 10. The Trip Class 10 rating means it will trip within 10 seconds at 7.2× the thermal setting — critical for protecting standard induction motors during locked-rotor starts without nuisance tripping on normal acceleration. It carries a 100 kA breaking capacity at 400 V AC, which is the short-circuit current it can safely interrupt at the panel's main bus level; this is the figure that determines whether the breaker coordinates with upstream fuses or a molded-case switch. At 690 V AC the breaking capacity drops to 10 kA, so verify the available fault current at that voltage if the circuit runs at 690 V. The part mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, in any mounting position. Clearance requirements: 50 mm upward and downward, 30 mm at the side, 0 mm forward and backward — meaning it can sit flush against a backplane or enclosure wall with no rear gap. The 45 mm width and 97 mm depth match the standard S00 footprint, so it drops into any panel already laid out for the SIRIUS S00 family without re-drilling or re-spacing.
Integration notes
Terminals are M3 screw-type for the main current circuit, accepting 2x (0.75 to 2.5 mm²) solid or stranded, or 2x 4 mm². Use a Pozidriv size 2 screwdriver tip or a 5 to 6 mm diameter shaft. Phase failure detection is built in; ground fault detection is not. The rated operational voltage spans 20 to 690 V, so it covers 230/400/500/690 V line-to-line systems. At 230 V the motor power rating is 0.4 kW. The gG fuse backup values are 25 A at 400 V and 500 V, and 20 A at 690 V.