SMCU150FD, Westinghouse, Cutler Hammer, Eaton circuit breaker operator mechanism. For use with FD & HFD series C circuit breakers up to 150A. Can be used to replace origianal Westinghouse Type W MCC handle mechanisms on 150A frame circuit breakers. This is a NEW engineered aftermarket replacement part. 

*** This is a new aftermarket product. Please be patient while our production ramps up. Lead time currently is 3-weeks