Eaton NZMN3-AE400-NA Molded Case Circuit Breaker

Eaton NZMN3-AE400-NA is a 400A, three-pole molded-case circuit breaker designed to protect electrical distribution circuits in commercial and industrial settings. It is part of Eaton’s NZMN3 series and is UL Listed, with listing noted for GA 30064. This device provides overcurrent protection for feeders and branch circuits in panelboards and switchgear, interrupting all three phases in a balanced fashion for reliable fault isolation in three‑phase power systems. The 400 A frame supports high‑current applications, while the three-pole configuration is suitable for standard 3‑phase installations. It is intended for installation in compatible Eaton panelboards and switchgear, supporting consistent protection across distribution equipment. The NZMN3-AE400-NA designation identifies the model and rating within Eaton’s NZMN3 family; for exact electrical characteristics, trip curves, interrupting rating, and panel compatibility, consult Eaton’s official specifications to ensure a proper fit with your installation.