ABB SACE PR221DS Three Phase Molded Case Circuit Breaker

ABB SACE Tmax T4H PR221DS is a fixed, three-pole molded‑case circuit breaker in ABB’s Tmax SACE lineup, engineered for reliable overcurrent protection in industrial power distribution panels. The PR221DS‑LS/I variant uses a solid‑state release for AC control and comes in a front‑terminal, three‑pole configuration suitable for copper feeders; regional listings show multiple current ratings for this family, with observed examples including In=100 A, In=250 A, and In=320 A. A Brazilian ABB listing specifies an Icu of 70 kA at 380 V for the PR221DS‑LS/I 3P model, reflecting its high‑fault‑level protection. The PR221DS line supports compatibility with current transformers for CT‑based protection and can be configured in plug‑in or withdrawable installations, facilitating panel integration and testability. Typical applications include distribution boards, motor control centers, and other industrial switchgear where fixed‑trip protection and fast, reliable interrupting performance are needed. As part of the Tmax T4H family, PR221DS combines robust mechanical design with ABB’s engineering for molded‑case breakers, delivering consistent tripping behavior in demanding environments and straightforward wiring through front terminals.