SIRIUS motor protection circuit breaker, Class 10, 100 kA
The Siemens 3RV2011-1EA20-ZW96 is a SIRIUS-branded motor protection circuit breaker designed for motor protection. Its Class 10 trip characteristic means it clears a fault within 10 seconds at 7.2× the thermal setting — fast enough to protect standard induction motors during locked-rotor starts without nuisance tripping on normal acceleration. Rated breaking capacity hits 100 kA at 400 V, 480 V, and 500 V — sufficient for high-fault panels where upstream breakers are sized for 65 kA or less. At 690 V it derates to 4 kA, which still covers most industrial motor branch circuits. Mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715. The 45 mm width and 97 mm depth fit standard panel layouts; any mounting position is allowed, which simplifies retrofit into existing enclosures. Main circuit connections use spring-loaded terminals accepting 2×(0.5…4 mm²) solid or stranded wire — no screw torque to verify, which speeds panel wiring. Phase failure detection is built in; ground fault detection is not.
Sourcing and lifecycle
The SIRIUS 3RV2 family is the established motor protection platform; no formal replacement or phase-out notice is on record. If you are freezing a BOM for a multi-year run, this code is a safe anchor.
Backup fuse coordination
For installations requiring backup fuse protection, the 3RV2011-1EA20-ZW96 coordinates with gL/gG fuses rated 32 A at 400 V and 500 V, and 25 A at 690 V. This matters when the available fault current exceeds the breaker's own interrupting rating — the fuse clears before the breaker fails.