| Home Depot | 100170316 | 5.77 | 1 | 10 | | Cooper Bussmann | | 5.77 @ 10 |
| Monarch Electric | 57172 | 8.66 | 1 | 10 | | Bussmann | | 8.66 @ 10 |
  | mostelectric.com | FRN-R-40 | 9.09 | 1 | 10 | | COOPER BUSSMANN | | 9.09 @ 10 |
  | gsistore.com | FRN-R-40 | 9.36 | 1 | 9999 | | Bussmann | | 9.36 @ 10 |
  | superbreakers.com | FRN-R-40 | 9.53 | 1 | 10 | | Eaton Bussmann | | 9.53 @ 10 |
  | turtle.com | BUS FRN-R-40 | 9.72 | 1 | 10 | | Eaton | | 9.72 @ 10 |
  | Allfuses | FRN-R-40 | 9.94 | 1 | 632 | | Bussmann | | 9.94 @ 10 |
  | hatchethardware.com | 40603920 | 9.99 | 1 | 10 | | Bussmann | 1.0 | 9.99 @ 10 |
| Ace Hardware | 3266145 | 10.99 | 1 | 10 | | Bussmann | | 10.99 @ 10 |
  | hardwareandmoreee.com | 411421 | 11.08 | 1 | 44 | | COOPER BUSSMANN | | 11.08 @ 10 |
| AmazonSC | B01LC6V6IA | 11.37 | 1 | 10 | | Bussman | | 11.37 @ 10 |
  | storeseven.com | FRN-R-40 | 11.49 | 1 | 4650 | | Bussmann | | 11.49 @ 10 |
  | Hardware and Tools | GCBA-4133 | 11.49 | 1 | 10 | | Cooper Bussmann | | 11.49 @ 10 |
  | Kelly Hayes | FRN-R-40 | 11.79 | 1 | 10 | | BUSSMANN | | 11.79 @ 10 |
| ferguson.com | 122210 | 11.99 | 1 | 10 | | Bussmann | 0.11 | 11.99 @ 10 |
| Life and Home | 40603920 | 12.02 | 1 | 10 | | Bussmann | | 12.02 @ 10 |
  | thetoolcabin.com | B000BPMQ6A | 12.74 | 1 | 10 | | BUSSMANN | | 12.74 @ 10 |
  | bscsource.com | FRNR40 | 14.49 | 1 | 10 | | Cooper Bussmann | | 14.49 @ 10 |
| Toolbox Supply | 10238464 | 14.63 | 1 | 10 | | Cooper Bussmann | | 14.63 @ 10 |
| specialtycontrolsystems.com | FRN-R-40 | 14.65 | 1 | 10 | | BUSSMAN | | 14.65 @ 10 |
  | Zoro | G3090936 | 14.9 | 1 | 4202 | | Eaton Bussmann | 1.2 | 14.9 @ 10 |
  | Galco | FRN-R-40-BUSS | 14.9 | 1 | 10 | | Bussmann | 0.12 | 14.9 @ 10 |
| Waldom | EATON FRN-R-40 | 15.17 | 4 | 10 | | Eaton | | 15.17 @ 10 |
  | AI Consolidated | FRN-R-40-BUSSMANN | 15.47 | 1 | 10 | | Bussmann Eaton Cooper Fuses | 0.12 | 15.47 @ 10 |
  | Raptor Supplies | AA8TWD | 16.1457075 | 1 | 10 | | BUSSMANN | | 16.1457075 @ 10 |
| Jugenheimer | JI523874 | 16.49 | 1 | 10 | | Bussmann | 0.51 | 16.49 @ 10 |
| Graybar | 88050681 | 16.6432 | 1 | 29 | | Bussmann (Eaton) | | 16.6432 @ 10 |
| Onlinecomponents.com | FRN-R-40 | 16.65 | 1 | 51 | | BUSSMANN / EATON | | 16.65 @ 10 |
  | simsupply.com | 523874 | 17.33 | 1 | 218 | | Bussmann | | 17.33 @ 10 |
  | Platt.com | 0357221 | 17.63 | 1 | 164 | | Eaton/Bussmann Series | | 17.63 @ 10 |
| iodParts | FRN-R-40 | 17.72 | 40 | 80 | | Eaton | | 17.72 @ 40 |
  | Tedss | 2026000966 | 17.99 | 1 | 10 | | COOPER BUSSMANN | | 17.99 @ 10 |
  | Federal Connectors | FRNR40@BUS | 17.99 | 2 | 125 | | BUSSMANN | | 17.99 @ 10 |
  | Carlton Bates Company | 05171210178 | 18.28 | 1 | 10 | | EATON BUSSMANN SERIES | | 18.28 @ 10 |
| steinerelectric.com | 4723 | 19.07 | 1 | 10 | | BUSSMANN | | 19.07 @ 10 |
  | globalcommercialparts.com | BUS_FRNR40 | 19.91 | 1 | 20 | | BUSSMAN | | 19.91 @ 10 |
| AmazonTP | B07194KBBR | 20.45 | 1 | 10 | 3 | EATON BUSSMANN | | 20.45 @ 10 |
| Mouser | 504-FRN-R-40 | 21.11 | 1 | 10 | | Cooper Bussmann | | 21.11 @ 10 |
| Digi-Key | FRN-R-40-ND | 21.978 | 10 | 10 | | Eaton | | 21.978 @ 10 |
  | Walker Industrial | FRN-R-40 | 23.84 | 10 | 10 | 10 | Cooper Bussmann | | 23.84 @ 10 |
  | Elliott Electric | FRNR40 | 26.05 | 1 | 10 | | Eaton Bussmann Series | 0.12 | 26.05 @ 10 |
| uri.com | FRNR40 | 26.16 | 1 | 10 | | Bussmann | 0.1 | 26.16 @ 10 |
  | kempstoncontrols.co.uk | FRN-R-40 | 27.129258 | 1 | 22 | | Bussmann | | 27.129258 @ 10 |
  | National Supply Network | 75908244 | 27.609 | 10 | 10 | | Cooper Bussmann | | 27.609 @ 10 |
  | Radwell | FRN-R-40 | 28.0 | 10 | 234 | | BUSSMANN FUSETRON | | 28.0 @ 10 |
  | NRI Industrial | D234222 | 29.94 | 1 | 10 | | COOPER BUSSMANN | | 29.94 @ 10 |
  | Task Surplus | IG-TAS257-200-4I61 | 30.0 | 1 | 10 | | BUSSMANN | | 30.0 @ 10 |
| us.rs-online.com | 70151201 | 32.21 | 1 | 10 | | Bussmann by Eaton | | 32.21 @ 10 |
  | swatee.com | FRN-R-40 | 36.69 | 1 | 10 | | Eaton | | 36.69 @ 10 |
  | Newark | 28F268 | 39.97 | 10 | 10 | | EATON BUSSMANN | | 39.97 @ 10 |
| Airline Hydraulics | BUSSMANN FRN-R-40 | 41.29 | 1 | 10 | | Cooper Bussmann | | 41.29 @ 10 |
| standardelectricsupply.com | 7679 | 272.4 | 1 | 10 | | Bussmann | | 272.4 @ 10 |