SIRIUS 3RV2021-4BA10-0BA0 motor-protection circuit breaker
Rated breaking capacity hits 100 kA at 240 V AC, 55 kA at 400 V AC, and 10 kA at 500 V AC. At 690 V AC it clears 4 kA. These figures cover most industrial distribution fault levels downstream of a transformer.
Required clearance: 50 mm upward, 50 mm downward, 30 mm at the sides. Zero clearance needed forward or backward — tight panel layouts work. Terminals accept 2× (1 to 2.5 mm²) or 2× (2.5 to 10 mm²) solid or stranded copper.
Operates from -50 to +60 °C; temperature compensation active from -20 to +60 °C. Stores and ships from -50 to +80 °C.