ABB SACE XT4N250 Main Breaker

ABB SACE Tmax XT4N 250 Main Breaker is a fixed, three‑pole molded‑case circuit breaker designed for 480–600 V installations, serving as the main protective device in industrial switchgear and distribution panels. It features a 250 A frame with front‑terminal wiring and uses a thermomagnetic release (TMA) to provide reliable overcurrent protection. The XT4N 250 configuration delivers a short‑circuit current rating (I3) in the approximate range of 1,125 to 2,250 A, depending on the exact version, making it suitable for feeder protection and main switching duties in commercial and industrial networks. As part of ABB’s SACE Tmax XT family, this device combines a compact XT4N form factor with robust protection technology for durable operation in demanding environments.