You may be correct that you have redundant motor protection.
The upstream breaker may be sized correctly for short circuit and ground fault protection in which case the fuses are not needed. The motor starter may have the correct sized overcurrent/overload protection in which case the fuses are not needed.
But, the molded case switch may not have the correct stand-alone short circuit current rating (SCCR). This manufacturer of the switch shold be contacted to see if it can be protected by the upstream breaker rather than by the integral fuses.
[This message has been edited by JBD (edited 02-13-2007).]
