C-curve trip for motor and lighting branch circuits
The 5SJ4332-7HG42: The C tripping characteristic means the magnetic trip activates at 5–10× rated current — the right profile for moderate inrush loads like small motors, pumps, and fluorescent lighting banks where a B-curve would nuisance-trip on startup. For a 3-pole 400 V AC panel, this MCB clears faults at 10 kA per EN 60898 and 15 kA per IEC 60947-2. The higher IEC figure is the one that governs SCCR coordination in an industrial panel — the EN 60898 rating applies to residential/commercial distribution boards.
Panel fit and environmental limits
Snaps onto standard DIN rail in any mounting position, occupying 3 modular width units — 54 mm wide with a 70 mm installation depth. The IP20 protection class with connected conductors and IP40 in the handle range means this is a dry-panel device: no washdown tolerance, so it belongs inside a sealed enclosure on a food-and-bev line, not in the splash zone. Ambient range -40 °C to 75 °C covers both cold storage and warm cabinet environments.
Active production — no lifecycle concern
Lifecycle stage is current — this is an active-production part from Siemens' SENTRON family.