The ABB XT3N 250 TMD 200‑2000 3P FF is a three‑pole molded case circuit breaker (MCCB) from ABB’s SACE Tmax XT/T3N series, designed for protection and manual switching in industrial and commercial low‑voltage power systems. It features a thermo‑magnetic (TMD) trip unit with adjustable instantaneous/short‑circuit setting up to 2000 A, delivering reliable protection against overload and short‑circuit faults. The breaker’s front fixed terminals simplify panel mounting and wiring, and its robust design ensures dependable performance in power distribution and feeder protection applications.