The Siemens SIRIUS 3RV2011-1BA15-0BA0 is a motor protection circuit breaker designed for Class 10 trip characteristics, meaning it disconnects within 10 seconds at 7.2x the thermal setting — the standard for protecting standard induction motors during locked-rotor starts. It carries a 100 kA breaking capacity at 400 V AC, which drops to 10 kA at 690 V AC, so verify your available fault current at the line voltage. Phase failure detection is built in, and the unit mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715.
Compared to the 3RV2021-1FA15, the 3RV2011-1BA15-0BA0 shares the same 45 mm width and DIN rail footprint but is the current-production Class 10 variant with screw terminals. The 3RV2021-1FA15 is a different frame size — verify panel cutout dimensions before assuming a drop-in swap.
Panel integration: 45 mm wide, 97 mm deep, 97 mm tall. Screw terminals accept 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²). Mounting position is any orientation. Clearance: 50 mm above and below, 30 mm at the sides, zero front/back. Operating temperature range -50 to +60 °C; storage and transport -50 to +80 °C.