  | mostelectric.com | FRN-R-4 | 6.86 | 1 | 38 | | COOPER BUSSMANN | | 6.86 @ 4 |
  | Allfuses | FRN-R-4 | 7.14 | 1 | 4 | | Bussmann | | 7.14 @ 4 |
| AmazonTP | B000VZM93K | 7.36 | 1 | 4 | 2 | Bussmann | | 7.36 @ 4 |
  | superbreakers.com | FRN-R-4 | 9.57 | 1 | 4 | | Eaton Bussmann | | 9.57 @ 4 |
  | Tedss | 2026000999 | 10.0 | 1 | 4 | | COOPER BUSSMANN | | 10.0 @ 4 |
  | Federal Connectors | FRNR4@BUS | 10.0 | 2 | 40 | | BUSSMANN | | 10.0 @ 4 |
  | bscsource.com | FRNR4 | 11.09 | 1 | 4 | | Cooper Bussmann | | 11.09 @ 4 |
  | Walker Industrial | FRN-R-4 | 11.66 | 10 | 4 | 17 | Cooper Bussmann | | 11.66 @ 10 |
| Onlinecomponents.com | FRN-R-4 | 12.95 | 1 | 18 | | BUSSMANN / EATON | | 12.95 @ 4 |
  | AI Consolidated | FRN-R-4-BUSSMANN | 13.08 | 1 | 4 | | Bussmann Eaton Cooper Fuses | 0.05 | 13.08 @ 4 |
  | Zoro | G2778316 | 13.31 | 1 | 441 | | Eaton Bussmann | 0.05 | 13.31 @ 4 |
  | Galco | FRN-R-4-BUSS | 13.33 | 1 | 4 | | Bussmann | 0.05 | 13.33 @ 4 |
| Monarch Electric | 58545 | 13.34 | 1 | 4 | | Bussmann | | 13.34 @ 4 |
| Waldom | EATON FRN-R-4 | 13.6 | 1 | 4 | | Eaton | | 13.6 @ 4 |
  | Platt.com | 0357209 | 13.63 | 1 | 95 | | Eaton/Bussmann Series | | 13.63 @ 4 |
  | Carlton Bates Company | 05171250720 | 15.46 | 1 | 4 | | EATON BUSSMANN SERIES | | 15.46 @ 4 |
| Graybar | 88050678 | 20.2384 | 1 | 4 | | Bussmann (Eaton) | | 20.2384 @ 4 |
  | simsupply.com | ZO-G2778316 | 21.73 | 1 | 97 | | Eaton Bussmann | | 21.73 @ 4 |
| uri.com | FRNR4 | 22.5 | 1 | 4 | | Bussmann | 0.1 | 22.5 @ 4 |
  | Raptor Supplies | AD6RQE | 22.704552 | 1 | 4 | | BUSSMANN | | 22.704552 @ 4 |
  | Radwell | FRN-R-4 | 24.0 | 10 | 208 | | BUSSMANN FUSETRON | | 24.0 @ 10 |
  | National Supply Network | 75908210 | 24.1475 | 10 | 4 | | Cooper Bussmann | | 24.1475 @ 10 |
  | French Gerleman | BUSSFRNR4 | 26.3 | 1 | 4 | | Bussmann | | 26.3 @ 4 |
  | Kelly Hayes | FRN-R-4 | 26.66 | 1 | 4 | | BUSSMANN | | 26.66 @ 4 |
| us.rs-online.com | 70150108 | 29.64 | 1 | 4 | | Bussmann by Eaton | | 29.64 @ 4 |
  | Newark | 28F256 | 34.44 | 10 | 4 | | EATON BUSSMANN | | 34.44 @ 10 |
  | Digi-Key | 5434852 | 34.866 | 10 | 4 | | Eaton - Bussmann Electrical Division | | 34.866 @ 10 |
| Airline Hydraulics | BUSSMANN FRN-R-4 | 46.82 | 1 | 4 | | Cooper Bussmann | | 46.82 @ 4 |
| standardelectricsupply.com | 7677 | 266.6 | 1 | 4 | | Bussmann | | 266.6 @ 4 |