The Siemens SIRIUS 3RV2011-1EA25-ZW97 is a motor protection circuit breaker designed for the main current circuit of a motor starter combination. It provides Class 10 trip protection, meaning it will trip within 10 seconds at 7.2x the thermal setting — standard for protecting standard induction motors during start-up. This unit carries a 100 kA breaking capacity at 400 V, which means it can safely interrupt a fault current up to that level without needing an upstream fuse or breaker to clear first, simplifying panel coordination. Phase failure detection is built in, so the breaker will trip if one phase drops out — a common cause of motor burnouts on lightly loaded conveyors or pumps. The spring-loaded terminals accept 2x (0.5... 2.5 mm²) solid or stranded wire, which saves panel wiring time compared to screw terminals. Mounting is screw and snap-on onto 35 mm standard mounting rail per DIN EN 60715, in any orientation. This is a current-production part. Availability is confirmed at quote time against an RFQ through independent distribution channels.
DIN rail fit and spacing
The 3RV2011-1EA25-ZW97 measures 45 mm wide, 106 mm tall, and 97 mm deep. That 45 mm width is three standard 15 mm module slots on a DIN rail — a common footprint for a motor protection breaker in this class. For side-by-side mounting, the minimum clearance to adjacent devices is 30 mm at the side, 50 mm upwards, and 50 mm downwards. Zero clearance forwards and backwards means it can sit flush against a back panel or enclosure wall.
Breaking capacity and selectivity
The 100 kA breaking capacity at 240 V, 400 V, and 500 V is the headline number for panel coordination. At 690 V the capacity drops to 4 kA — still sufficient for most 690 V motor circuits in industrial plants, but worth noting if the fault current at that voltage exceeds 4 kA. For comparison, the 3RV1011-1HA10 carries a lower 55 kA at 400 V, so the 3RV2011-1EA25-ZW97 offers more headroom in high-fault installations without an upstream current-limiting device.
Environmental limits
Operating temperature range is -20 to +60 °C, with temperature compensation active across that same span. Storage and transport range is -50 to +80 °C. The auxiliary contact ratings cover 24 V at 1 A, 60 V at 0.15 A, 120 V at 0.5 A, 125 V at 0.5 A, and 230 V at 0.5 A — useful for feeding a PLC input or a status lamp.