| MRO Supply | 1376050 | 1 | | 1 | |
 Onlinecomponents.com | KTK-25 | 1 | | 1 | 1 @ $20.68, 10 @ $18.77, 20 @ $17.43, 50 @ $16.27, 100 @ $15.64 |
 Grainger | 4XC45 | 1 | 103 | 1 | 1 @ $15.50 |
| Allied Electronics | 70150085 | 1 | | 1 | |
| 1Source | KTK-25 | 1 | | 1 | |
| TME | KTK-25 | 1 | | 1 | |
 Walker Industrial | KTK-25 | 10 | 3 to 5 Days | 10 | 1 @ $35.60 |
 Platt.com | 0960767 | 1 | 48 | 1 | 1 @ $32.90 |
| Fuses Unlimited | KTK-25 | 1 | 81 | 1 | |
 Carlton Bates Company | 05171242025 | 1 | 3 | 1 | 1 @ $22.40 |
 AI Consolidated | KTK-25-BUSSMANN | 1 | -2 | 1 | 1 @ $18.96 |
 Digi-Key | 283-2469-ND | 1 | 6 | 1 | 1 @ $29.95, 5 @ $28.52, 10 @ $26.38, 50 @ $22.82, 100 @ $21.39, 250 @ $19.96, 500 @ $18.54, 1000 @ $17.82 |
 NRI Industrial | D345025 | 1 | | 1 | 1 @ $43.91 |
 Newark | 01P3614 | 1 | | 1 | 1 @ $57.70, 5 @ $49.26, 10 @ $35.79, 25 @ $26.72, 50 @ $21.31, 100 @ $17.98 |
| Future Electronics | 2028368 | 1 | 2 | 1 | 1 @ $19.72, 5 @ $17.83, 10 @ $17.08, 25 @ $16.12, 50 @ $14.79 |
| swatee.com | KTK-25 | 1 | 13 | 1 | 1 @ $31.73 |
 Tundra | 381435 | 1 | | 1 | 1 @ $28.61 |
| FinditParts | 5950688 | 1 | | 1 | |
 Raptor Supplies | AE2FJQ | 1 | | 1 | 1 @ $13.02 |
 AmazonTP | B017088MG8 | 1 | | 1 | 1 @ $9.99 |
| AmazonTP | B003ATWETI | 1 | | 1 | 1 @ $9.99 |
 AmazonTP | B07RWLCWDK | 1 | | 1 | 1 @ $47.98 |
| AmazonSC | B000LEUVWW | 1 | | 1 | |
| AmazonSC | B089DQ17G4 | 1 | | 1 | |
| RS Online | 4588554 | 1 | | 1 | |
| Newark | 27AC7187 | 1 | | 1 | |
 Sager Electronics | KTK-25 | 10 | 3490 | 1 | 10 @ $21.60, 100 @ $20.16, 1000 @ $20.16, 10000 @ $20.16 |
| Guardian | KTK-25 | 1 | -2 | 1 | |
 kempstoncontrols.co.uk | KTK-25 | 1 | 54 | 1 | 1 @ $41.89 |
| standardelectricsupply.com | 8081 | 1 | | 1 | 1 @ $406.90 |
 Kelly Hayes | KTK-25 | 1 | 5 | 1 | 1 @ $17.60 |
 bakedeco.com | 38-1435 | 1 | -2 | 1 | 1 @ $45.90 |
 Radwell | KTK-25 | 1 | 21 | 1 | 1 @ $36.00 |
 grainger.ca | BUSKTK25 | 1 | | 1 | |
 BD Enterprises | KTK-25 | 1 | | 1 | 1 @ $22.35, 10 @ $19.87, 25 @ $19.87, 50 @ $18.80, 200 @ $17.95 |
 supremediy.com | VORG7765944 | 1 | 10 | 1 | 1 @ $20.71 |
| Widespread | KTK-25 | 1 | | 1 | |
 Newark | 14N8864 | 10 | | 10 | 10 @ $41.71, 25 @ $38.90, 50 @ $36.08, 100 @ $33.82 |
 shelllumber.com | VORG7765944 | 1 | 10 | 1 | 1 @ $21.32 |
| Crescent Electric Supply Co | 2140074 | 1 | | 1 | |
| RS Delivers | 458-8554 | 1 | 625 | 1 | 1 @ $15.53 |
 specialtycontrolsystems.com | KTK-25 | 1 | 11 | 1 | 1 @ $27.14 |
 galesburgelectric.com | KTK-25 | 1 | -2 | 1 | 1 @ $16.75 |
| Guardian | KTK25 | 1 | | 1 | |
 globalcommercialparts.com | BUS_KTK25 | 1 | | 1 | 1 @ $23.77 |
 Galco | KTK-25-BUSS | 1 | 7 | 1 | 1 @ $19.24 |
| Crescent Electric Supply Co | KTK-25 | 1 | | 1 | |
 mostelectric.com | KTK-25 | 1 | 10 | 1 | 1 @ $10.63 |
 National Supply Network | 74974049 | 10 | -2 | 10 | 1 @ $30.87 |
 Allfuses | KTK-25 | 1 | 525 | 1 | 1 @ $8.39 |
 zaynesolutions.com | 7765944 | 1 | Out Of Stock | 1 | 1 @ $21.62 |
| us.rs-online.com | 70150085 | 1 | | 1 | 1 @ $57.52, 5 @ $54.64, 10 @ $51.76, 50 @ $43.14, 100 @ $40.26, 200 @ $37.38 |
 crescentelectric.com | 163041 | 1 | | 1 | 1 @ $41.50 |
 superbreakers.com | KTK-25 | 1 | -2 | 1 | 1 @ $8.25 |
| Airline Hydraulics | BUSSMANN KTK-25 | 1 | | 1 | 1 @ $61.66 |
 Zoro | G1067367 | 1 | 1278 | 1 | 1 @ $16.66 |
 simsupply.com | ZO-G1067367 | 1 | 37 | 1 | 1 @ $25.69 |
