ABB S203-K2 DIN Rail Mounted Circuit Breakers

ABB S203-K2 is a three-pole System Pro M Compact S200 miniature circuit breaker designed for DIN rail mounting in control panels and electrical distribution boards. It is rated for 2 A and features a Type K thermal-magnetic trip characteristic, providing protection for three-phase circuits up to 440 V AC and 110 V DC, with a breaking capacity up to 20 kA. The 2CDS253001R0277 part number identifies this specific S203-K2 variant within ABB’s S200 family. This DIN-rail mounted protective device is suitable for branch circuits in industrial panel assemblies, including loads such as motors and conveyors, where compact, reliable overcurrent protection is required. By combining the System Pro M Compact lineage with the S200 family’s compact form factor, it helps maximize space inside crowded enclosures while delivering predictable trip behavior under overload and short‑circuit conditions.