The Siemens SIRIUS 3RV1021-1AA10-0FJ0-ZX95 is a motor-protection circuit breaker rated for 1.6 A continuous current with a CLASS 10 trip characteristic, meaning it will trip within 10 seconds at 7.2× rated current — fast enough to protect standard induction motors during stall or overload without nuisance tripping on normal starting inrush.
Compared to the 3RV1011-0GA10 (a physically smaller frame in the same SIRIUS family), the 3RV1021-1AA10-0FJ0-ZX95 offers the same CLASS 10 trip and 100 kA SCCR but at a higher continuous current rating — 1.6 A versus 0.4 A — and with a wider conductor range (up to 6 mm² vs 2.5 mm²). The 45 mm width is identical, so a panel designed around the 3RV1011 frame accepts this unit without rewiring the DIN rail.
IP20 finger-safe on the front; no special clearance needed at the sides or rear. Ground fault detection is not included — this is a motor-overload and short-circuit device, not a GFCI.