Siemens JXD63B400 Sentron molded‑case circuit breaker is a 400 A, 3‑pole unit designed for 600 V AC (and 250 V DC) service, part of the Sentron JXD6 family. It features a thermal‑magnetic, non‑interchangeable trip unit and provides a 25 kA short‑circuit interrupting rating at 600 V, making it well suited for protecting feeders and motor circuits in industrial power distribution panels. This 3‑pole MCCB is intended for low‑voltage distribution applications within Siemens’ Sentron line, delivering robust overload and short‑circuit protection for demanding industrial environments.
