NZMH9-250/ZM9A-250-NA Eaton Molded Case Circuit Breaker

The NZMH9-250/ZM9A-250-NA is a 3-pole molded case circuit breaker rated at 250A with thermal-magnetic trip functionality. It features a fixed thermal trip setting of 250A and offers two selectable magnetic trip ranges: 600–1200A or 1000–2000A. Its interrupting capacity is 200kA at 240V AC and 85kA at 480V AC. The NA suffix indicates compliance with North American system requirements. This device operates on inverse time characteristics for thermal response and provides adjustable magnetic protection to accommodate differing inrush current profiles across industrial applications.