The Fuse Tube Length And Contact Slot Size Must Be Precisely Matched.

For protective components like the drop out fus, their geometric features, such as length and diameter, must be completely consistent with the dimensions of the contact slot or fuse holder in order to meet the assembly tolerance requirements and the mechanical design requirements of the overall circuit structure. Using fuses of incompatible dimensions may lead to poor contact, stress concentration, or even component damage; this is a physical compatibility issue that must be considered during the selection phase.