TA1200NB1, Cutler Hammer, Series C, type TA, lug terminal kit, 1 terminal, 1200A, 4 barrel, 500 MCM size, aluminum, field installable, suitable for use with NB, HNB, NG, NBDC, NBM, HNBM, NBMH, ND, HND, NDC, CND, CHND, CNDC, NC, NCA, HNC, HNCA frame molded case circuit breakers