NZMH9-250 Eaton Molded Case Circuit Breaker

The NZMH9-250 is a molded case circuit breaker (MCCB) with a 250A frame rating, UL 489 and CSA C22.2 No. 5.1 certified, and rated for up to 690V AC. It supports thermal-magnetic (ZM9A) and electronic (ZM9-OBI) trip units, with nominal current settings from 63A to 250A and extended trip ranges up to 2400A. Trip unit options include adjustable or fixed settings. Configurations are available in standard global, CNA (North America), and NA (U.S.) variants. Electronic models provide adjustable long-time and instantaneous trip functions for selective coordination; thermal-magnetic models use fixed trip curves. Line/load terminals are bolt-on type; operating handles are not included and must be ordered separately. Applications include feeders, main distribution panels, motor circuits, and high-capacity switchgear.