| AmazonTP | B0078R3UYG | 10.7 | 1 | In Stock | 2 | Bussmann | | 10.7 @ 1 |
  | Allfuses | KTK-R-4 | 11.14 | 1 | 123 | | Bussmann | | 11.14 @ 1 |
  | galesburgelectric.com | KTK-R-4 | 11.82 | 1 | In Stock | | Bussmann | | 11.82 @ 1 |
  | mostelectric.com | KTK-R-4 | 12.86 | 1 | 6 | | COOPER BUSSMANN | | 12.86 @ 1 |
  | superbreakers.com | KTK-R-4 | 14.79 | 1 | In Stock | | Eaton Bussmann | | 14.79 @ 1 |
  | Raptor Supplies | AE2FJA | 16.894332 | 1 | In Stock | | BUSSMANN | | 16.894332 @ 1 |
  | AI Consolidated | KTK-R-4-BUSSMANN | 21.64 | 1 | In Stock | | Bussmann Eaton Cooper Fuses | 0.025 | 21.64 @ 1 |
  | bscsource.com | KTKR4 | 21.79 | 1 | In Stock | | Cooper Bussmann | | 21.79 @ 1 |
  | Tedss | 2026000995 | 21.86 | 1 | In Stock | | COOPER BUSSMANN | | 21.86 @ 1 |
| Onlinecomponents.com | KTK-R-4 | 23.78 | 1 | 280 | | BUSSMANN / EATON | | 23.78 @ 1 |
  | Walker Industrial | KTK-R-4 | 24.78 | 1 | In Stock | 17 | Cooper Bussmann | | 24.78 @ 1 |
  | Zoro | G0925583 | 24.78 | 1 | 1126 | | Eaton Bussmann | 0.03 | 24.78 @ 1 |
  | Galco | KTK-R-4-BUSS | 24.78 | 10 | In Stock | | Bussmann | 0.6173 | 24.78 @ 10 |
| Waldom | EATON KTK-R-4 | 25.24 | 3 | In Stock | | Eaton | | 25.24 @ 1 |
  | Carlton Bates Company | 05171242063 | 25.58 | 1 | In Stock | | EATON BUSSMANN SERIES | | 25.58 @ 1 |
| Graybar | 88052137 | 26.04 | 1 | 11 | | Bussmann (Eaton) | | 26.04 @ 1 |
  | kempstoncontrols.co.uk | KTK-R-4 | 26.771706 | 1 | 46 | | Bussmann | | 26.771706 @ 1 |
  | Platt.com | 0164555 | 26.96 | 1 | 127 | | Eaton/Bussmann Series | | 26.96 @ 1 |
  | Digi-Key | 283-3461-ND | 32.24 | 1 | In Stock | | Eaton - Bussmann Electrical Division | | 32.24 @ 1 |
| steinerelectric.com | 5036 | 32.48 | 1 | In Stock | | BUSSMANN | | 32.48 @ 1 |
  | Elliott Electric | KTKR4 | 35.96 | 1 | In Stock | | Eaton | 0.02 | 35.96 @ 1 |
  | Radwell | KTK-R-4 | 40.0 | 1 | 18 | | BUSSMANN LIMITRON | | 40.0 @ 1 |
| uri.com | KTKR4 | 41.22 | 1 | In Stock | | Cooper Bussmann | 1.0099 | 41.22 @ 1 |
  | French Gerleman | BUSSKTKR4 | 42.16 | 1 | 2 | | Bussmann | | 42.16 @ 1 |
| RS Delivers | 848-3917 | 43.68 | 1 | 15 | | Eaton | | 43.68 @ 1 |
| Future Electronics | 4028370 | 46.272 | 10 | In Stock | | Eaton | | 46.272 @ 10 |
  | National Supply Network | 74760448 | 50.45 | 10 | In Stock | | Cooper Bussmann | | 50.45 @ 10 |
| us.rs-online.com | 70150956 | 52.56 | 1 | 13 | | Bussmann by Eaton | | 52.56 @ 1 |
  | Newark | 87F1614 | 58.16 | 10 | In Stock | | EATON BUSSMANN | | 58.16 @ 10 |
  | NRI Industrial | B392425 | 60.98 | 1 | In Stock | | COOPER BUSSMANN | | 60.98 @ 1 |
| standardelectricsupply.com | 8069 | 416.3 | 1 | In Stock | | Bussmann | | 416.3 @ 1 |