The ABB S202P-C2 is a 2-pole miniature circuit breaker rated 2 A with a Trip Curve C characteristic, meaning it trips at 5–10× rated current — the standard choice for protecting general-purpose loads like lighting, control transformers, and small motor circuits where moderate inrush is expected. DIN rail mounting means it snaps into the standard 35 mm rail inside an enclosure, so panel layout and replacement are straightforward.
This breaker occupies two DIN-rail module widths (about 36 mm). In a 277/480 V panel, it protects a single-phase 277 V branch circuit — common for lighting contactor feeds, small UPS inputs, or control power transformers. The Curve C characteristic handles the inrush from a 50 VA control transformer or a bank of LED drivers without nuisance tripping, yet clears a hard short fast enough to coordinate with a 10 kA-rated upstream main.