DescriptionEngineered for commercial and industrial applications, this 400A molded case circuit breaker utilizes advanced microprocessor-based sensing. It installs into GE Spectra Series panelboards and switchboards, providing precise coordination through adjustable short-time and instantaneous settings. As a legacy SG frame component, it is currently replaced by the XT5NU340AFFF000XXX when using the appropriate retrofit kit. The unit delivers a robust 65kAIC interrupting capacity at 240VAC.


