NZMH9-250/ZM9A-175-NA Eaton Molded Case Circuit Breaker

The NZMH9-250/ZM9A-175-NA is a 250A, 3-pole molded case circuit breaker with thermal-magnetic trip functionality. It features a fixed thermal trip setting of 175A and offers two selectable magnetic trip ranges: 600–1200A or 1000–2000A. Its interrupting capacity is rated at 200kA at 240V AC and 85kA at 480V AC. The NA suffix denotes compliance with North American electrical system requirements. This device operates on an inverse time thermal-magnetic principle and is configured for standard industrial distribution applications requiring precise overcurrent coordination and high fault current interruption.