The 10 kA breaking capacity at 400 V AC per EN 60898 tells you it can safely interrupt a fault current up to 10,000 A without welding contacts or cascading upstream — critical for coordination studies in a panel fed by a transformer of that fault level. The part carries a railway-design designation, which typically adds vibration resistance and extended temperature range testing beyond the standard industrial MCB.
This MCB snaps onto a DIN rail via the quick-assembly mounting system — standard 35 mm rail, 4 width units (72 mm wide, 90 mm tall, 76 mm deep). Terminals accept solid or stranded copper from 0.75 mm² up to 35 mm², with a tightening torque of 2.5 to 3.5 N·m. Combined terminals top and bottom simplify busbar or ring-tongue wiring.