Siemens SIRIUS 3RV2011-1BA25-ZX95 is a motor protection circuit breaker, size S00, CLASS 10 trip. It protects motors up to 2 A full-load current. Rated operational current is 2 A, adjustable thermal overload release covers 1.4 to 2 A. Instantaneous short-circuit release is fixed at 26 A. Breaking capacity is 100 kA at 240 V, 400 V, and 500 V AC, derating to 10 kA at 690 V AC. That 100 kA rating at common distribution voltages (240/400 V) means this breaker can be installed on high-fault-capacity panels without needing upstream current-limiting fuses — it handles the full prospective fault current itself.
Termination and Mounting
This variant uses spring-type terminals on the main circuit, accepting 2×(0.5 to 1.5 mm²) solid/stranded or 2×(0.75 to 2.5 mm²) with ferrule. The spring cage eliminates screw-torque verification during panel build — strip to 8 mm, push the conductor in, done. Mounts via snap-on to 35 mm DIN rail per EN 60715; side-by-side spacing is 0 mm, so breakers pack tightly without derating. The built-in transverse auxiliary switch block provides 1 NO + 1 NC contact, rated C300 / R300 per UL. This covers remote status feedback or interlocks without adding a separate auxiliary module.