What the C25 rating means for your panel
The ABB S801S-C25 is a miniature circuit breaker (MCB) from the S801S series, carrying a C-trip curve and a 25 A rated current. The C-curve means the magnetic trip threshold is set at 5–10× In (125–250 A instantaneous), which is the standard choice for motor and transformer branch circuits where inrush currents are moderate — common in industrial control panels.