Eaton NZMB2-A63-NA Molded Case Circuit Breaker - 25 kAIC

The NZMB2-A63-NA uses the NZM2 frame, offering a compact molded case design that combines solid current handling with a lightweight footprint. This helps electrical teams fit protection devices into tighter panel layouts while maintaining robust distribution circuit protection performance. With an amperage rating of 63 A and a 440 Vac operating voltage, it protects medium to large distribution circuits in three-phase services. Its 25 kAIC short-circuit breaking capacity minimizes fault damage and supports higher fault current environments common in industrial facilities. The trip assembly features fixed thermal and adjustable magnetic trip (T185). The setting range Ol Protector is 50–63 A, and the delayed short-circuit release covers 380–630 A, enabling precise coordination with upstream devices and reduced nuisance trips. Front screw connection simplifies installation and maintenance, enabling easier retrofits in existing panels where rear access is limited. The three-pole configuration ensures balanced protection across all phases, essential for motor and process loads in manufacturing environments. Accessories such as a rocker lever and a motor drive option enhance usability and remote control integration in machine control cabinets. This supports faster commissioning, safer operation, and compatibility with Eaton's control schemes. Designed for distribution circuit protection with a 4.05 in depth and 7.24 in height, the unit weighs 4.1 lb, making it straightforward to handle during installation while maintaining a sturdy mechanical profile.