UL Fuse Classification Chart
| Ul Class | Fuse Overload Characteristics | Interrupting Rating, Amperes | AC Voltage Rating | Available Ampere Ratings |
| L | TIME-DELAY | 200,000 | 600 | 200 - 6000 601 - 4000 200 - 2000 |
| RK1*** | TIME-DELAY | 200,000 | 250 600 |
1/10 - 600 |
| FAST-ACTING | 200,000 | 250 600 |
1 - 600 | |
| RK5 | TIME-DELAY | 200,000 | 250 600 |
1/10 - 600 |
| T | FAST-ACTING | 200,000 | 300 600 |
1 - 1200 1 - 1200 |
| J | TIME-DELAY | 200,000 | 600 | 1 - 600 |
| FAST-ACTING | 200,000 | 600 | 1 - 600 | |
| CC | TIME-DELAY | 200,000 | 600 | 1/10 - 30 1/4 - 30 |
| FAST-ACTING | 200,000 | 600 | 1/10 | |
| CD | TIME-DELAY | 200,000 | 600 | 35 - 60 |
| G | TIME-DELAY | 100,000 | 480 | 1/2 - 60 |
| K5 | FAST-ACTING | 50,000 | 250 600 |
1 - 600 |
| H | Renewable Fuses Fast-Acting | 10,000 | 250 600 |
1 - 600 |