Integrator's note on the S202-C13
The ABB S202-C13 is a 2-pole miniature circuit breaker rated at 13 A with a Trip Curve C characteristic, meaning it trips at 5 to 10 times the rated current for short-circuit protection — the standard curve for general-purpose loads like lighting, small motors, and control transformers where moderate inrush is expected. The 6 kA interrupting rating at 277 VAC (line-to-neutral on a 480Y/277 V system) is sized for branch-circuit protection in a panelboard or sub-distribution board. DIN-rail mount snaps into the standard 35 mm rail; the 2-pole form factor occupies two module widths (about 36 mm).
The 2-pole width (two 18 mm modules) leaves room alongside other S200-series breakers, contactors, or terminal blocks on the same rail. Rated for 277 VAC phase-to-neutral, so it fits 480Y/277 V distribution panels where each pole protects one phase conductor.
Trip Curve C — what it means for the load
Curve C (5–10× In) is the default choice for circuits with moderate inrush: lighting banks, small motor starters, control transformers, and general receptacle loads. It avoids nuisance tripping on the inrush of a 13 A load while still clearing a hard short within the 6 kA rating. If the load is purely resistive with no inrush, Curve B would be tighter; if it is a large motor or welder with high inrush, Curve D would be preferred. For a 13 A general-purpose branch, Curve C is the standard fit.