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

The NZMH9-250/ZM9A-175-CNA is a 3-pole molded case circuit breaker rated at 250A, featuring inverse time thermal-magnetic tripping. It includes a fixed 175A thermal trip and an adjustable magnetic trip range from 1600A to 2400A. Interrupting capacity is 200kA at 240V AC and 85kA at 480V AC. The CNA suffix denotes configuration and certification for North American market requirements. This device operates as a thermal-magnetic breaker with no electronic or microprocessor-based trip functionality.