The ABB S203M-C16 is a 3-pole miniature circuit breaker from the S200 series, rated for C-curve tripping at 16 A per pole.
What the C-curve means for your application
The C-curve characteristic means the breaker trips magnetically at 5 to 10 times rated current (80 to 160 A instantaneous per pole). That range suits mixed loads with moderate inrush — think control transformers, small motor circuits, or general lighting panels where you need selectivity against downstream fuses or smaller MCBs.
