Rated for a 30 A branch circuit, curve C response
The S803UE-K30 is a 3-pole miniature circuit breaker from the ABB S800UE series, rated 30 A with a trip curve C characteristic. The 6 kA interrupting rating at 277 VAC means it can safely clear a fault up to that level on a 277/480 V wye system — typical for lighting panels, small motor branch circuits, and general-purpose distribution in commercial or light industrial panels. The curve C trip (5–10× In) handles moderate inrush from small transformers or capacitor banks without nuisance tripping, while still protecting downstream wiring.
Snaps onto DIN rail, fits standard distribution boards
DIN rail mounting per means this breaker clips directly onto a 35 mm top-hat rail inside a panel or enclosure. No tools needed for installation or removal — the latch releases with a screwdriver slot. The 3-pole footprint occupies three modular units (each 17.5 mm wide), so it fits standard 18 mm pitch distribution boards. Wire terminals accept up to 35 mm² conductors for the 30 A rating.