32 A, Curve C, 3-pole — the S400 panel protector
The ABB S403M-C32 is a 3-pole miniature circuit breaker from the S400 family, rated 32 A with a Trip Curve C characteristic and a 10 kA interrupting capacity at 240 VAC. Curve C means it trips between 5 and 10 times rated current — the standard choice for protecting general-purpose loads like lighting, socket outlets, and small motor circuits where moderate inrush is expected. The 10 kA SCCR at 240 VAC is sufficient for most commercial and light industrial distribution panels; it safely clears a fault up to that level without requiring an upstream current-limiting device.