What the 6 A rating and Curve B mean for your branch circuit
Rated 6 A continuous, this ABB S202-B6 protects a branch circuit against sustained overloads and short circuits up to 6 kA at 277 VAC phase-to-neutral. The 2-pole configuration switches both the line and neutral conductors, which is required for 240 V split-phase or 277/480 V wye circuits where a single-pole break on neutral leaves a shock hazard.
Panel fit and DIN-rail integration
Occupies two modular 18 mm pole widths (36 mm total), so it fits the same grid as any ABB System Pro M compact or S200-series MCB.