Table
Branch-Circuit vs Supplemental Fuses
Branch-Circuit vs Supplemental Fuses lookup table with assumptions and boundary notes.
Scope
Fuse-use terminology planning only. It does not decide whether a fuse may protect a circuit, device, motor, transformer, or panel.
Lookup table
Compare branch-circuit and supplemental fuse markings as a label-reading lookup.
Scroll sideways to keep row labels aligned with hidden columns.
| Fuse use type | Common equipment context | Label cues | Boundary |
|---|---|---|---|
| Branch-circuit fuse | Branch circuits, feeders, and equipment protection source links | Look for branch-circuit, general-purpose, or equipment-protection language | Branch-circuit label planning only; actual use depends on the product, holder, and equipment |
| Supplemental fuse | Control circuits and supplemental protection source links | Look for supplemental or control-circuit language | Supplemental-fuse label planning only; actual use depends on the product, holder, and equipment |
| Semiconductor fuse | Drive and power-electronics protection source links | Look for semiconductor, high-speed, or aR/gR product language | Semiconductor-fuse label planning only; manufacturer data governs actual device protection |
Notes
- Check table values for preliminary lookup and arithmetic checks only.
- Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.