Which of the following is not a part of a fusible disconnect?

In a fusible disconnect, the primary components include fuses for overcurrent protection and a disconnect switch to isolate the electrical circuit. The fuses serve to protect the equipment by breaking the circuit in the event of excessive current flow, while the disconnect switch allows for safe operation and maintenance by enabling the circuit to be completely de-energized.

The control panel, however, is not an inherent part of a fusible disconnect. It may be used in conjunction with disconnects for operational control or monitoring purposes, but it is not essential to the basic functionality of a fusible disconnect. Therefore, identifying "Control panel" as not being part of the fusible disconnect is correct, as it highlights that this component does not contribute directly to the disconnect mechanism or its purpose of providing electrical safety and protection. Thus, the answer reflects an accurate understanding of the components integral to a fusible disconnect.