 | Walker Industrial | S506-12-5-R | 2.55 | 5 | 10 | 17 | Cooper Bussmann | | 2.55 @ 10 |
| Dale-Electric | S506-12.5-R | 2.79 | 1 | 10 | | Cooper Bussmann | | 2.79 @ 10 |
 | AI Consolidated | S506-12-5-R-BUSSMANN | 2.79 | 1 | 10 | | Bussmann Eaton Cooper Fuses | 0.0219 | 2.79 @ 10 |
| Waldom | EATON BK/S506-12.5-R | 2.88 | 1 | 10 | | Eaton | | 2.88 @ 10 |
 | Galco | BK/S506-12.5-R-BUSS | 3.75 | 100 | 10 | | Bussmann | | 3.75 @ 100 |
| Newark | 26P5230 | 4.5 | 100 | 10 | | EATON BUSSMANN | | 4.5 @ 100 |
| Onlinecomponents.com | S506-12.5-R | 4.6 | 10 | 500 | | Cooper Bussmann | | 4.6 @ 10 |
| Hotenda | H575030 | 4.725 | 1 | 10 | | Eaton (formerly Cooper Bussmann) | | 4.725 @ 10 |
 | Digi-Key | 283-3084-ND | 4.968 | 1 | 10 | | Eaton - Electronics Division | | 4.968 @ 10 |
| Verical | BK/S506-12.5-R | 4.99 | 12 | 500 | | Cooper Bussmann | | 4.99 @ 12 |
| Graybar | 25523389 | 5.2192 | 5 | 10 | | Bussmann (Eaton) | | 5.2192 @ 10 |
| crescentelectric.com | 548445 | 5.22 | 1 | 10 | | Eaton Bussmann series | | 5.22 @ 10 |
| Mouser | 504-BK/S506-12.5-R | 5.51 | 1 | 148 | | Cooper Bussmann | | 5.51 @ 10 |
| steinerelectric.com | 870355 | 6.06 | 1 | 10 | | BUSSMANN | | 6.06 @ 10 |
| Radwell | BKS506125R | 6.08 | 100 | 10 | | BUSSMANN | | 6.08 @ 100 |
| AmazonTP | B003ATW358 | 7.39 | 1 | 10 | 30 | Bussmann | | 7.39 @ 10 |
 | Platt.com | 0957362 | 7.52 | 1 | 10 | | Eaton/Bussmann Series | | 7.52 @ 10 |
| us.rs-online.com | 71930880 | 12.92 | 100 | 10 | | Eaton Electronics | | 12.92 @ 100 |
 | Zoro | G3000216 | 16.55 | 1 | 284 | | Bussmann | 0.02 | 16.55 @ 10 |
| standardelectricsupply.com | 2232221 | 20.85 | 1 | 10 | | Bussmann | | 20.85 @ 10 |
 | sustainablesupply.com | C1176997 | 27.54 | 1 | 10 | | Eaton | 0.02 | 27.54 @ 10 |
 | simsupply.com | ZO-G3000216 | 33.13 | 1 | 197 | | Eaton Bussmann | | 33.13 @ 10 |
 | Raptor Supplies | AB8WUL | 36.961938 | 1 | 10 | | BUSSMANN | | 36.961938 @ 10 |
