NZM9-250/ZM9-160-2000-OBI-CNA Eaton Molded Case Circuit Breaker

The NZM9-250/ZM9-160-2000-OBI-CNA is a 3-pole molded case circuit breaker with a 250A frame size and 160A continuous current rating. It features an adjustable instantaneous magnetic trip range set between 1000A and 2000A. Designed as an OBI CNA variant, it meets North American specifications and provides short-circuit protection only—no overload protection. The device carries UL and CSA certification and has a standard interrupting rating. It operates as an instantaneous trip circuit breaker without thermal overcurrent functionality.