In a control transformer system, the fuse block serves a critical protective function by safeguarding both the transformer and the connected control circuitry from overcurrent conditions. Typically installed on the primary side of the transformer, the fuse block contains replaceable fuses that are designed to interrupt the electrical flow when current exceeds safe operating limits. This prevents damage caused by short circuits, overloads, or equipment faults, thereby enhancing system reliability and safety. Additionally, fuse blocks facilitate easy maintenance and troubleshooting by allowing quick visual inspection and replacement of blown fuses, making them an essential component in industrial and commercial control panels. It is a 3 pole fuse block for Primary and Secondary fusing. It accommodates 1-1/2 x 13/32 inches midget fuse.