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

A fusible disconnect is an essential component in electrical systems that allows for the safe isolation of electrical circuits while providing overcurrent protection through the use of fuses. Each of the listed components plays a significant role in the overall functionality of a fusible disconnect.

Fuses are critical in a fusible disconnect, as they serve the primary purpose of overcurrent protection; when a fault or excessive current occurs, the fuse will blow to protect the circuit. The operating handle provides a means to manually operate the fusible disconnect, allowing an operator to easily switch the connection on or off, thereby ensuring safety during maintenance or in an emergency. The enclosure is also essential as it houses all the components and protects them from environmental factors such as dust, moisture, and physical damage.

Since each component listed is integral to the operation of a fusible disconnect, the inclusion of “None of the above” as the correct answer indicates that all the listed components are indeed part of a fusible disconnect system. The correct response highlights the importance of understanding the complete assembly and functionality of these electrical devices.