Our local utility requires a disconnect between the utility transformer and the fire pump, so the utility does not have to kill power to the fire pump for maintenance or changing the pump controller. I can find nothing in the NEC that would allow an unfused disconnect ahead of a service rated fire pump controller. The disconnect would need to be a service disconnect with overcurrent sized for locked rotor amps per 695. Am my correct about the unfused disconnect ahead of a service rated fire pump controller not being allowed?