  | Digi-Key | BK1/S500-50-R-ND | 1.582 | 1000 | 100 | | Eaton - Electronics Division | | 1.582 @ 1000 |
| Arrow | BK1/S500-50-R | 1.638 | 1 | 1000 | | Cooper Bussmann | | 1.638 @ 100 |
| Waldom | EATON BK1/S500-50-R | 1.67 | 1 | 100 | | Eaton | | 1.67 @ 100 |
| iodParts | S500-50-R | 1.879 | 160 | 1225 | | Eaton | | 1.879 @ 160 |
| Radwell | S500-50-R | 1.92 | 1 | 100 | | BUSSMANN | | 1.92 @ 100 |
| Newark | 83R2935 | 2.12 | 1000 | 100 | | EATON BUSSMANN | | 2.12 @ 1000 |
| us.rs-online.com | 74057075 | 2.2 | 1000 | 100 | | Eaton Electronics | | 2.2 @ 1000 |
| Onlinecomponents.com | BK1-S500-50-R | 2.5 | 1 | 100 | | Cooper Bussmann | | 2.5 @ 100 |
  | AI Consolidated | S500-50-R-BUSSMANN | 3.1 | 1 | 100 | | Bussmann Eaton Cooper Fuses | 0.0244 | 3.1 @ 100 |
| RS Delivers | 537-1127 | 3.8748 | 1 | 750 | | Eaton | | 3.8748 @ 100 |
  | Carlton Bates Company | 05171264421 | 3.89 | 1 | 100 | | EATON BUSSMANN SERIES | | 3.89 @ 100 |
  | Walker Industrial | S500-50-R | 4.08 | 5 | 100 | 10 | Cooper Bussmann | | 4.08 @ 100 |
| Dale-Electric | S500-50-R | 4.47 | 1 | 100 | | Cooper Bussmann | | 4.47 @ 100 |
| Mouser | 504-S500-50-R | 5.85 | 1 | 375 | | Cooper Bussmann | | 5.85 @ 100 |
  | Galco | S500-50-R-BUSS | 6.79 | 5 | 100 | | Bussmann | 9.5 | 6.79 @ 100 |
| crescentelectric.com | 277986 | 9.39 | 1 | 100 | | Eaton Bussmann series | | 9.39 @ 100 |
  | Platt.com | 0085215 | 9.75 | 1 | 100 | | Eaton/Bussmann Series | | 9.75 @ 100 |
  | Zoro | G1640764 | 20.99 | 1 | 100 | | Eaton Bussmann | 0.02 | 20.99 @ 100 |
  | sustainablesupply.com | C1177066 | 27.24 | 1 | 100 | | Eaton | 0.02 | 27.24 @ 100 |
  | simsupply.com | ZO-G1640764 | 29.58 | 1 | 100 | | Eaton Bussmann | | 29.58 @ 100 |
| standardelectricsupply.com | 2300517 | 33.3 | 1 | 100 | | Bussmann | | 33.3 @ 100 |
  | Raptor Supplies | AB8XFK | 50.8282515 | 1 | 100 | | BUSSMANN | | 50.8282515 @ 100 |
| AmazonTP | B011NNBBPA | 207.62 | 1 | 100 | 20 | BUSSMANN BY EATON | | 207.62 @ 100 |