| Ul Class | Fuse Overload Characteristics | Interrupting Rating, Amperes | AC Voltage Rating | Available Ampere Ratings | Ferraz-Shawmut Part Number |
| L | TIME-DELAY | 200,000 | 600 |
200 – 6000 601 – 4000 200 – 2000 |
A4BQ A4BT A4BQ |
| RK1*** | TIME-DELAY | 200,000 |
250 600 |
1/10 – 600 |
A2D-R A6D-R |
| FAST-ACTING | 200,000 |
250 600 |
1 – 600 |
A2K-R A6K-R |
|
| RK5 | TIME-DELAY | 200,000 |
250 600 |
1/10 – 600 |
TR-R A2D-R TRS-R A6D-R A6DR IDSR |
| T | FAST-ACTING | 200,000 |
300 600 |
1 – 1200 1 – 1200 |
A3T A6T |
| J | TIME-DELAY | 200,000 | 600 | 1 – 600 | AJT |
| FAST-ACTING | 200,000 | 600 | 1 – 600 | A4J | |
| CC | TIME-DELAY | 200,000 | 600 |
1/10 – 30 1/4 – 30 |
ATQR ATDR |
| FAST-ACTING | 200,000 | 600 | 1/10 | ATMR | |
| CD | TIME-DELAY | 200,000 | 600 | 35 – 60 | ATDR |
| G | TIME-DELAY | 100,000 | 480 | 1/2 – 60 | AG |
| K5 | FAST-ACTING | 50,000 |
250 600 |
1 – 600 |
OT OTS |
| H | Renewable Fuses Fast-Acting | 10,000 |
250 600 |
1 – 600 |
RF RFS |