Motor protection circuit breaker for panel integration
The Siemens SIRIUS 3RV2011-1BA10-ZW97 is a motor protection circuit breaker designed for Class 10 trip response, meaning it will open within 10 seconds at 7.2× the thermal setting — fast enough to protect standard induction motors during a locked-rotor event without nuisance tripping on normal starts. Rated breaking capacity hits 100 kA at 400 V and 500 V AC, and 10 kA at 690 V, so it can interrupt high fault currents upstream of a motor starter without cascading damage to downstream contactors or overloads. Mounts via screw and snap-on onto standard 35 mm DIN rail per DIN EN 60715, with a 45 mm width that fits a single modular device slot — no extra panel space needed beyond the contactor it pairs with.