Engineering Considerations For Fuses From The Perspective Of Line Capacity Expansion

The layout of distribution cabinets and branch lines should maintain a degree of flexibility, for example, by reserving spare terminals or spare conductor paths. The rated current, breaking capacity, and short-circuit response time of the drop out fuse can be configured as is initially, but interfaces should be pre-set for possible future current upgrades. In high-current systems, fuses have evolved from traditional single-conductor elements to high-breaking-capacity structures; their internal filling materials and structural reinforcement have become key design considerations.