Zillion SFS
Smart fuse switch | lower solution

The SFS – Bottom-Mounted Smart Fuse Switch is an integrated solution that combines protection, sensing and advanced electrical monitoring directly at the feeder level within the low-voltage switchboard. This enables accurate electrical measurement without the need for additional external devices, simplifying the system architecture from the outset.

The solution natively integrates the SAL – Advanced Line Supervisor together with the TSA – Advanced Supervision Board, incorporating current transformers directly into the fuse switch base. As a result, the SFS transforms conventional protection into an intelligent asset capable of generating reliable and comparable electrical data.

In addition, its bottom-mounted design supports a compact and organised switchboard layout. It also allows the safe replacement of electronic boards while energised, without interrupting the power supply, improving operational continuity.

As part of the Zillion ecosystem, the SFS provides a solid foundation for advanced network monitoring, diagnostics and operation. The data collected can therefore be used consistently alongside the rest of the ecosystem’s solutions.

SFS – Bottom-Mounted Smart Fuse Switch-0

SFS – Bottom-Mounted Smart Fuse Switch-1

Value proposition

Protection and monitoring in a single fuse switch unit. The SFS combines NH fuse protection, electrical signal acquisition and advanced monitoring within a single smart fuse switch.
Native electrical measurement at the protection point. Current and voltage measurements are acquired directly within the fuse switch unit, ensuring data accuracy and consistency from the source.
Compact architecture. The lower-mounted design and reduced wiring simplify the low-voltage distribution panel layout, improving safety and ease of installation.
Operational continuity and ease of maintenance. The replacement of electronic boards while energised allows maintenance and upgrade tasks to be carried out without interrupting the power supply.

Main use case

Advanced electrical monitoring in low-voltage distribution boards requiring a compact, integrated and native solution combining NH fuse protection and electrical monitoring directly at the feeder level. The lower-mounted SFS is particularly suitable for new distribution boards or retrofit projects where a clean, scalable architecture ready for grid digitalisation is required. In this configuration, the lower-mounted smart fuse switch integrates protection and advanced electrical monitoring directly at the feeder level.