Breaking capacity decides the fault-handling margin
The 5SJ4232-7HG41: This 2-pole MCB carries two interrupting ratings: 10 kA per EN 60898 for residential/commercial branch circuits, and 15 kA per IEC 60947-2 for industrial panel duty. That suits motor-starting and transformer inrush loads where a B-curve would nuisance-trip on the magnetizing current peak.
DIN-rail footprint and environmental range
The 70 mm depth fits flush in enclosures. Rated for ambient operation from -40 °C to 75 °C with up to 95 % humidity, and vibration resistance to 50 m/s² at 25–150 Hz. The IP20 rating is typical for enclosed panels; the handle area reaches IP40 when the cover is closed.