ABB S201-K20A-1 Circuit Breaker

ABB S201-K20A-1 is a 1-pole miniature circuit breaker from ABB's S200 family, configured with a K-curve trip for precise overload protection and a nominal rating of 20 A. It is designed for single-phase protection in 230/400 V AC systems and is intended for DIN-rail mounting in standard electrical panels. The device's interrupting capacity is 6 kA (Icu) at 230/400 V, making it suitable for typical branch-circuit protection in commercial and industrial installations. This ABB component complies with IEC 60898-1/60947-2 family standards, is commonly wired for one-pole protection, and is used to protect lighting, outlets, and other branch circuits within distribution boards and control panels. The S201-K20A-1 variant aligns with the 1P configuration in ABB's S200 lineup and is frequently catalogued as S201-K20, reflecting the same electrical characteristics.