SPBNH-2000A-U
SPBNH-3P-4000A-NA, Cutler Hammer, Systems Pow-R, type SPB, 3P, 3PH, 2000A, 600V, 100kA@480V, standard interrupting capacity, bolt-on, NA - No Overcurrent Protection, non-automatic switch, insulated case circuit breakers; these breakers are obsolete