Rated 60 A, Curve K — what it means on the panel
On a DIN-rail panel, that 60 A rating carries motor and inductive loads where the inrush is higher than a resistive heater but lower than a transformer — Curve K trips between 8 and 12 times rated current, so a 60 A breaker holds through a 480–720 A peak long enough for a motor start but clears a hard short before the cable insulation melts. The interrupting capacity is 6 kA at 277 VAC and 10 kA at 250 VDC. That 6 kA AC figure is standard for downstream distribution in a panel fed by a larger upstream device — it clears a bolted fault within its rating without welding the contacts, but needs coordination with the branch feeder if the available fault current exceeds 6 kA.
Single-pole footprint saves one module width over a 2-pole equivalent — relevant when filling a sub-distribution board or a control panel where every 18 mm slot counts.