Eaton NZMH4-AE1000-S1 Molded Case Circuit Breaker - UL Listed

High current rating and short-circuit capacity provide robust protection for large distribution panels, reducing downtime and equipment damage while enabling reliable coordination with upstream protection systems. In practice, users see improved system availability and lower resilience risk when protecting feeders to motors and MCCs, especially in manufacturing lines and processing plants. The NZMH4-AE1000-S1 delivers 1000 A protection in a compact NZM4 frame, supporting scalable layouts and easier panel design for new builds or retrofits. The 85 kAIC short-circuit breaking capacity at 480 Vac ensures fast interruption of faults, enhancing safety margins in critical distribution circuits and motor control applications. This device ships with thermal-magnetic trip for accurate fault sensing, minimizing nuisance trips during startup transients common in heavy‑duty equipment. The front screw connection simplifies wiring, enabling cleaner terminations and faster commissioning, while the three-pole configuration ensures balanced protection across three-phase systems. Compatibility with rocker lever and motor drive accessories expands control options for automation panels and machine control rooms. Adjustable protection ranges—500–1000 A OL and 2000–12000 A delayed short‑circuit release—let engineers tailor protection to actual loads and startup surges, reducing unnecessary trips and preserving motor life. In practice, this translates to lower maintenance costs, easier settings through standard test procedures, and improved compliance with safety and performance standards in industrial environments.