Panel fit and DIN-rail integration
The Siemens 5SJ4216-7HG41 is a 2-pole miniature circuit breaker from the SENTRON 5SJ4 series, occupying 2 modular width units (36 mm) on a standard DIN rail.
Breaking capacity and trip curve
Rated 10 kA per EN 60898 and 15 kA per IEC 60947-2 at 400 V AC, this C-curve breaker handles moderate inrush from motor starters and transformer banks without nuisance tripping. On the DC side, the rating drops to 60 V — sufficient for control-circuit isolation in a 48 VDC panel but not for a 125 VDC battery bank. The overvoltage category is 3, and the pollution degree is 3, matching the environment inside an unsealed industrial enclosure.
The SENTRON 5SJ4 series is the established line for European-spec panel builds. If your BOM calls for a UL 489-listed equivalent, note that this breaker carries EN/IEC approvals (EN 60898, IEC 60947-2) — verify the project's listing requirements before specifying.