ABB SACE S5N-400A-600V-3P Three-Phase Circuit Breaker

ABB SACE S5N-400A-600V-3P is a three-pole molded‑case circuit breaker rated for 400 A at up to 600 V, built to protect three‑phase power circuits in industrial switchgear. As a member of ABB’s S5N Isomax family, it delivers a short‑circuit breaking capacity of 35 kA at 480 V and 415 V and is configured for bolt‑on mounting. This unit includes auxiliary and shunt‑trip options for remote tripping, and it provides long‑time and instantaneous trip functions to tailor protection to the application. It uses load‑side lug terminals for secure, easy connections in distribution panels, and is designed to support reverse‑feed configurations in complex electrical installations. The S5N line is known for robust protection of feeders, motors, and other heavy‑duty loads in demanding industrial environments.