Fuse Characteristics: CLASS CF
cf lt 0045A to cf lt 0100A
Fuse time-current characteristics, voltage ratings, interrupting capacity, and current-limiting classification by fuse class (UL 248 and IEC 60269). Also includes per-rating let-through current (peak A) and I²t (A²s) data from IEEE Std 3004.3-2020 for arc-flash and short-circuit coordination studies, covering Classes RK1, RK5, J, T (300V/600V), L, CC, G, CF, CD, C, CA, CB, mine-duty, and semiconductor fuse voltage derating.
| fuse class | record id | amp rating label | amp rating max (A) | amp rating min (A) | i2t 100kA A2s (A2s) | i2t 200kA A2s (A2s) | i2t 300kA A2s (A2s) | i2t 50kA A2s (A2s) | peak lt 100kA A (A) | peak lt 200kA A (A) | peak lt 300kA A (A) | peak lt 50kA A (A) | peak lt function | standard | voltage rating V (V) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CLASS CF | cf lt 0045A | 45A | 45 | 45 | 18,000 | — | — | — | 8,500 | — | — | — | — | IEEE Std 3004.3-2020 | 600 |
| CLASS CF | cf lt 0050A | 50A | 50 | 50 | 22,000 | — | — | — | 9,000 | — | — | — | — | IEEE Std 3004.3-2020 | 600 |
| CLASS CF | cf lt 0060A | 60A | 60 | 60 | 30,000 | 30,000 | 36,000 | 30,000 | 10,000 | 16,000 | 24,367 | 8,000 | Y = 1E-07x2 + 0.02x + 6666.7 | IEEE Std 3004.3-2020 | 600 |
| CLASS CF | cf lt 0070A | 70A | 70 | 70 | 50,000 | — | — | — | 11,500 | — | — | — | — | IEEE Std 3004.3-2020 | 600 |
| CLASS CF | cf lt 0080A | 80A | 80 | 80 | 60,000 | — | — | — | 12,500 | — | — | — | — | IEEE Std 3004.3-2020 | 600 |
| CLASS CF | cf lt 0090A | 90A | 90 | 90 | 75,000 | — | — | — | 13,500 | — | — | — | — | IEEE Std 3004.3-2020 | 600 |
| CLASS CF | cf lt 0100A | 100A | 100 | 100 | 80,000 | 80,000 | 96,000 | 60,000 | 14,000 | 20,000 | 28,367 | 12,000 | Y = 1E-07x2 + 0.02x + 10667 | IEEE Std 3004.3-2020 | 600 |
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