Fuse Selection Calculator
Calculate minimum fuse rating, ambient temperature derating factor KT, and surge withstand compliance based on IEC 60127 and UL 248.
Recommended: 1.25–1.5 (IEC 60127 min is 1.25)
Results
| Min Rating w/ Margin | — A |
| Temp Factor KT | — |
| Adjusted Min Rating | — A |
| ✅ Recommended Rating | — |
| Inrush Withstand Check | — |
Formulas
Min Rating = Iload × Safety Margin
Temp Derating: KT = 1 + 0.004 × (T - 23°C)
Adjusted Rating = Min Rating / KT