How many different sizes of screw cap type fuseholders are there for SC type fuses?

The commonly recognized sizes of screw cap type fuseholders for SC type fuses are indeed three. These sizes are designated to accommodate different amperage ratings of SC type fuses, ensuring that they fit securely and operate effectively within their intended electrical systems.

Having three sizes allows for a versatile application across various devices and equipment that require different levels of protection based on their electrical load and circuit design. This range is necessary to comply with safety regulations and to provide the appropriate level of fuse protection, ensuring that devices are safeguarded against overload and short circuits.

The design of fuseholders must align with the specifications of the fuses, which is critical for maintaining the integrity and safety of the electrical system.