Siemens 3RV2011-4AA10 — SIRIUS 3RV20 motor protection circuit breaker, frame size S00. Rated 0.11 to 16 A adjustable, up to 100 kA short-circuit breaking, IEC 60947-4-1 type-2 coordination with paired 3RT2 contactor. SIRIUS 3RV 14-20A. Siemens genuine. Siemens motor protection for industrial and marine service. DIN rail standard mount. Installed as the primary motor branch-circuit protection device between the incoming feeder and the contactor.