~CONVERTS TO 140M-C-W454N from the Discontinued M series**BE ADVISED - 140M PARTS ARE NOT INTERCHANGEABLE WITH 140MT AND 140MT ARE NOT INTERCHANGEABLE WITH 140M. Please look at the Documents Tab for conversion explanation, or reach out to your Rockwell Rep. for additional information.** Compact Busbar, 64A, 4 x 45mm Spacing, For 140MT, Motor Protection Circuit Breaker C, D Frame