The 3RV2011-1GA20 is a 1-pole thermal-magnetic motor protection circuit breaker from Siemens' SIMATIC 3RV2 series. Rated at 1 A (adjustable 0.63–1 A) for 230 V AC (50/60 Hz), it combines thermal overload protection (delayed trip) with magnetic short-circuit protection (instantaneous trip), offering 6 kA breaking capacity at 230 V AC.