63 Amp DIN rail breaker — what the C-curve means for your panel
The S272-C63 is a 63 Amp miniature circuit breaker from ABB's S272 series, designed for DIN rail mounting in distribution panels and control cabinets. The 'C' trip curve means it handles inrush currents typical of motor starters and lighting ballasts — it will hold through a short surge without nuisance tripping, but clears fast on a hard fault.