| Superbreakers | KTK-R-2 | 10.08 | 1 | 10 | | Cooper / Bussmann | | 10.08 @ 10 |
| AmazonTP | B0195V0WXO | 10.3 | 1 | 10 | 2 | COOPER BUSSMANN | | 10.3 @ 10 |
| AmazonSC | B01LAWK4Q6 | 10.31 | 1 | 10 | | Cooper Bussmann Brand | | 10.31 @ 10 |
  | Allfuses | KTK-R-2 | 11.14 | 1 | 427 | | Bussmann | | 11.14 @ 10 |
  | galesburgelectric.com | KTK-R-2 | 12.85 | 1 | 10 | | Bussmann | | 12.85 @ 10 |
  | mostelectric.com | KTK-R-2 | 13.37 | 1 | 10 | | COOPER BUSSMANN | | 13.37 @ 10 |
  | Raptor Supplies | AE2FHY | 16.894332 | 1 | 10 | | BUSSMANN | | 16.894332 @ 10 |
  | Kelly Hayes | KTK-R-2 | 16.94 | 1 | 10 | | BUSSMANN | | 16.94 @ 10 |
| Waldom | EATON KTK-R-2 | 20.15 | 1 | 10 | | Eaton | | 20.15 @ 10 |
| Onlinecomponents.com | KTK-R-2 | 20.29 | 1 | 11 | | BUSSMANN / EATON | | 20.29 @ 10 |
  | AI Consolidated | KTK-R-2-BUSSMANN | 20.35 | 1 | 10 | | Bussmann Eaton Cooper Fuses | 0.02 | 20.35 @ 10 |
  | Tedss | 2026000994 | 21.86 | 1 | 10 | | COOPER BUSSMANN | | 21.86 @ 10 |
  | globalcommercialparts.com | BUS_KTKR2 | 22.78 | 1 | 10 | | BUSSMAN | | 22.78 @ 10 |
  | Zoro | G1648227 | 23.3 | 1 | 2539 | | Eaton Bussmann | 0.02 | 23.3 @ 10 |
  | Galco | KTK-R-2-BUSS | 23.3 | 1 | 10 | | Bussmann | 0.0882 | 23.3 @ 10 |
  | Walker Industrial | KTK-R-2 | 23.3 | 10 | 10 | | Cooper Bussmann | | 23.3 @ 10 |
  | Carlton Bates Company | 05171242060 | 24.04 | 1 | 10 | | EATON BUSSMANN SERIES | | 24.04 @ 10 |
  | Platt.com | 0008693 | 28.78 | 1 | 259 | | Eaton/Bussmann Series | | 28.78 @ 10 |
| steinerelectric.com | 5033 | 30.53 | 1 | 10 | | BUSSMANN | | 30.53 @ 10 |
| Graybar | 88052129 | 30.9456 | 1 | 167 | | Bussmann (Eaton) | | 30.9456 @ 10 |
  | simsupply.com | ZO-G1648227 | 33.55 | 1 | 497 | | Eaton Bussmann | | 33.55 @ 10 |
| grainger.ca | BUSKTK-R2 | 34.7298171 | 1 | 10 | | BUSSMANN | 0.03 | 34.7298171 @ 10 |
  | Radwell | KTK-R-2 | 36.0 | 1 | 10 | | BUSSMANN LIMITRON | | 36.0 @ 10 |
  | National Supply Network | 74760349 | 37.439 | 10 | 10 | | Cooper Bussmann | | 37.439 @ 10 |
  | Digi-Key | 1877807 | 39.762 | 1 | 10 | | Eaton - Bussmann Electrical Division | | 39.762 @ 10 |
  | crescentelectric.com | 54437 | 39.94 | 1 | 46 | | Eaton Bussmann series | | 39.94 @ 10 |
| AmazonUNK | B07S2GX7WS | 41.07 | 1 | 10 | | Bussmann / Eaton | | 41.07 @ 10 |
  | NRI Industrial | B388115 | 41.58 | 1 | 10 | | COOPER BUSSMANN | | 41.58 @ 10 |
| us.rs-online.com | 70150954 | 45.72 | 1 | 10 | | Bussmann by Eaton | | 45.72 @ 10 |
  | kempstoncontrols.co.uk | KTK-R-2 | 45.8448705 | 1 | 43 | | Bussmann | | 45.8448705 @ 10 |
| RS Delivers | 848-3905 | 48.096 | 1 | 45 | | Eaton | | 48.096 @ 10 |
  | Newark | 09WX6292 | 51.73 | 1 | 98 | | EATON BUSSMANN | | 51.73 @ 10 |
| Airline Hydraulics | BUSSMANN KTK-R-2 | 59.34 | 1 | 10 | | Cooper Bussmann | | 59.34 @ 10 |
| standardelectricsupply.com | 8063 | 391.6 | 1 | 10 | | Bussmann | | 391.6 @ 10 |