The C-curve means it holds through brief inrush up to 5–10× rated current, then trips on sustained overload; for the 6 A rating, that translates to a magnetic trip threshold between 30 A and 60 A. Breaking capacity is 4.5 kA per EN 60898 and 6 kA per IEC 60947-2, with a DC rating of 15 kA at 72 V per IEC 60947-2 and 5 kA per UL 1077 / CSA C22.2 No. 235 — so it covers most branch-circuit fault levels in a 400 VAC panel.
Integration & wiring
Approvals & compliance
Rated per EN 60898 (4.5 kA) and IEC 60947-2 (6 kA AC, 15 kA DC at 72 V), with additional UL 1077 / CSA C22.2 No. 235 listing at 5 kA. Overvoltage category III, energy limiting class 3. Touch protection is built in. The product designation and design (5SY3) are consistent across the SENTRON range, and the part carries the F designation per DIN EN 61346-2 and DIN EN 81346-2 for circuit protection.