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UL Class RK1 Fast-Acting Fuses
Ferrule Style
Knife-Blade Style
These fuses open circuits quickly when surges are detected. They have a rejection-style end design that safeguards against replacement errors. Use with Fuse Blocks for UL Class RK1 Fuses.
Breakthrough current, labeled on the fuse as IR, is the maximum current that a fuse can safely stop in the event of a short circuit.
For technical drawings and 3-D models, click on a part number.
Overall | Each | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Current, A | Voltage | Breakthrough Current | Lg. | Dia. | No. of Elements | Cartridge Fuse Style | Specifications Met | 1-9 | 10-Up | |
Manufacturer Equivalent: A6K-R, KLS-R, KTS-R | ||||||||||
| 1 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 000000 | 000000 |
| 2 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 3 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 4 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 5 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 6 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 8 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 10 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 12 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 15 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 20 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 25 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 30 | 600V AC/250V DC | 20,000 A @ 250 V DC 200,000 A @ 600 V AC | 5" | 13/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 40 | 600V AC/300V DC | 20,000 A @ 300 V DC 200,000 A @ 600 V AC | 5 1/2" | 1 1/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 50 | 600V AC/300V DC | 20,000 A @ 300 V DC 200,000 A @ 600 V AC | 5 1/2" | 1 1/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 60 | 600V AC/300V DC | 20,000 A @ 300 V DC 200,000 A @ 600 V AC | 5 1/2" | 1 1/16" | 1 | Ferrule | UL Listed, CSA Certified | 00000000 | 00000 | 00000 |
| 80 | 600V AC/300V DC | 20,000 A @ 300 V DC 200,000 A @ 600 V AC | 7 7/8" | 1 5/16" | 1 | Knife Blade | UL Listed, CSA Certified | 00000000 | 000000 | 000000 |
| 90 | 600V AC/300V DC | 20,000 A @ 300 V DC 200,000 A @ 600 V AC | 7 7/8" | 1 5/16" | 1 | Knife Blade | UL Listed, CSA Certified | 00000000 | 000000 | 000000 |
| 100 | 600V AC/300V DC | 20,000 A @ 300 V DC 200,000 A @ 600 V AC | 7 7/8" | 1 5/16" | 1 | Knife Blade | UL Listed, CSA Certified | 00000000 | 000000 | 000000 |